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Space Science Reviews

, 215:33 | Cite as

Titan as Revealed by the Cassini Radar

  • R. M. C. Lopes
  • S. D. Wall
  • C. Elachi
  • S. P. D. Birch
  • P. Corlies
  • A. Coustenis
  • A. G. Hayes
  • J. D. Hofgartner
  • M. A. Janssen
  • R. L. Kirk
  • A. LeGall
  • R. D. Lorenz
  • J. I. Lunine
  • M. J. Malaska
  • M. Mastroguiseppe
  • G. Mitri
  • C. D. Neish
  • C. Notarnicola
  • F. Paganelli
  • P. Paillou
  • V. Poggiali
  • J. Radebaugh
  • S. Rodriguez
  • A. Schoenfeld
  • J. M. Soderblom
  • A. Solomonidou
  • E. R. Stofan
  • B. W. Stiles
  • F. Tosi
  • E. P. Turtle
  • R. D. West
  • C. A. Wood
  • H. A. Zebker
  • J. W. Barnes
  • D. Casarano
  • P. Encrenaz
  • T. Farr
  • C. Grima
  • D. Hemingway
  • O. Karatekin
  • A. Lucas
  • K. L. Mitchell
  • G. Ori
  • R. Orosei
  • P. Ries
  • D. Riccio
  • L. A. Soderblom
  • Z. Zhang
Article

Abstract

Titan was a mostly unknown world prior to the Cassini spacecraft’s arrival in July 2004. We review the major scientific advances made by Cassini’s Titan Radar Mapper (RADAR) during 13 years of Cassini’s exploration of Saturn and its moons. RADAR measurements revealed Titan’s surface geology, observed lakes and seas of mostly liquid methane in the polar regions, measured the depth of several lakes and seas, detected temporal changes on its surface, and provided key evidence that Titan contains an interior ocean. As a result of the Cassini mission, Titan has gone from an uncharted world to one that exhibits a variety of Earth-like geologic processes and surface-atmosphere interactions. Titan has also joined the ranks of “ocean worlds” along with Enceladus and Europa, which are prime targets for astrobiological research.

Keywords

Titan Cassini Radar 

Notes

Acknowledgements

We thank Robert M. Nelson and an anonymous reviewer for excellent and detailed reviews that greatly improved the manuscript, and Phil Callahan for an informal review and helpful suggestions for improvement. Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of technology, under contract with NASA. Copyright 2018, California Institute of Technology. Government sponsorship is acknowledged.

References

  1. O. Aharonson, A.G. Hayes, J.I. Lunine, R.D. Lorenz, M.D. Allison, C. Elachi, An asymmetric distribution of lakes on Titan as a possible consequence of orbital forcing. Nat. Geosci. 2(12), 851 (2009) ADSGoogle Scholar
  2. B. Andreotti, A. Fourriere, F. Ould-Kaddour, B. Murray, P. Claudin, Giant aeolian dune size determined by the average depth of the atmospheric boundary layer. Nature 457(7233), 1120 (2009) ADSGoogle Scholar
  3. N. Artemieva, J.I. Lunine, Numerical calculations of the longevity of impact oases on Titan. Icarus 173, 243–253 (2005) Google Scholar
  4. J.W. Barnes, R.H. Brown, E.P. Turtle, A.S. McEwen, R.D. Lorenz, M. Janssen, E.L. Schaller, M.E. Brown, B.J. Buratti, C. Sotin, C. Griffith, R. Clark, J. Perry, S. Fussner, J. Barbara, R. West, C. Elachi, A.H. Bouchez, H.G. Roe, K.H. Baines, G. Bellucci, J-P. Bibring, F. Capaccioni, P. Cerroni, M. Combes, A. Coradini, D.P. Cruikshank, P. Drossart, V. Formisano, R. Jaumann, Y. Langevin, D.L. Matson, T.B. McCord, P.D. Nicholson, B. Sicardy, A 5-micron-bright spot on Titan: evidence for surface diversity. Science 310, 92–95 (2005).  https://doi.org/10.1126/science.1117075 ADSCrossRefGoogle Scholar
  5. J.W. Barnes, R.H. Brown, J. Radebaugh, B.J. Buratti, C. Sotin, S. Le Mouelic, S. Rodriguez, E.P. Turtle, J. Perry, R. Clark, K.H. Baines, P.D. Nicholson, Cassini observations of flow-like features in western Tui Regio, Titan. Geophys. Res. Lett. 33, L16204 (2006).  https://doi.org/10.1029/2006GL026843 ADSCrossRefGoogle Scholar
  6. J. Barnes, J. Radebaugh, R.H. Brown, S. Wall, L. Soderblom, J. Lunine, D. Burr, C. Sotin, S. Le Mouelic, S. Rodriguez, B.J. Buratti, R. Clark, K.H. Baines, R. Jaumann, P.D. Nicholson, R.L. Kirk, R. Lopes, R. Lorenz, K. Mitchell, C.A. Wood, Near-infrared spectral mapping of Titan’s mountains and channels. J. Geophys. Res. 112, E11006 (2007a).  https://doi.org/10.1029/2007JE002932 ADSCrossRefGoogle Scholar
  7. J.W. Barnes, R.H. Brown, L. Soderblom, B.J. Buratti, C. Sotin, S. Rodriguez et al., Global-scale surface spectral variations on Titan seen from Cassini/VIMS. Icarus 186, 242–258 (2007b) ADSGoogle Scholar
  8. J.W. Barnes, R.H. Brown, L. Soderblom, C. Sotin, S. Le Mouelic, S. Rodriguez, R. Jaumann, R.A. Beyer, R. Clark, P. Nicholson, Spectroscopy, morphometry, and photoclinometry of Titan’s dunefields from Cassini/VIMS. Icarus 195, 400–414 (2008) ADSGoogle Scholar
  9. J.W. Barnes, J. Bow, J. Schwartz, R.H. Brown, J.M. Soderblom, A.G. Hayes, G. Vixie, S. Le Mouelic, S. Rodriguez, C. Sotin, R. Jaumann, K. Stephan, L.A. Soderblom, R.N. Clark, B.J. Buratti, K.H. Baines, P.D. Nicholson, Organic sedimentary deposits in Titan’s dry lakebeds: probable evaporate. Icarus 216, 136–140 (2011a) ADSGoogle Scholar
  10. J.W. Barnes, J.M. Soderblom, R.H. Brown, Wave constraints for Titan’s Jingpo Lacus and Kraken Mare from VIMS specular reflection lightcurves. Icarus 211, 722–731 (2011b).  https://doi.org/10.1016/j.icarus.2010.09.022 ADSCrossRefGoogle Scholar
  11. J.W. Barnes, B.J. Buratti, E.P. Turtle, J. Bow, P.A. Dalba, J. Perry, R.H. Brown, S. Rodriguez, S. Le Mouélic, K.H. Baines, C. Sotin, R.D. Lorenz, M.J. Malaska, T.B. McCord, R.N. Clark, R. Jaumann, P.O. Hayne, P.D. Nicholson, J.M. Soderblom, L.A. Soderblom, Precipitation-induced surface brightenings seen on Titan by Cassini VIMS and ISS. Planet. Sci. 2, 1 (2013).  https://doi.org/10.1186/2191-2521-2-1 ADSCrossRefGoogle Scholar
  12. J.W. Barnes, C. Sotin, J.M. Soderblom et al., Cassini/VIMS observes rough surfaces on Titan’s Punga mare in specular reflection. Planet. Sci. 3, 17 (2014).  https://doi.org/10.1186/s13535-014-0003-4 CrossRefGoogle Scholar
  13. C. Béghin, O. Randriamboarison, M. Hamelin, E. Karkoschka, C. Sotin, R.C. Whitten, J.-J. Berthelier, R. Grard, F. Simoes, Analytic theory of Titan’s Schumann resonance: constraints on ionospheric conductivity and buried water ocean. Icarus 218, 1028–1042 (2012) ADSGoogle Scholar
  14. J.-M. Bernard, E. Quirico, O. Brissaud, G. Montagnac, B. Reynard, B.P. McMillan, P. Coll, M.-J. Nguyen, F. Raulin, B. Schmitt, Reflectance spectra and chemical structure of Titan’s tholins: application to the analysis of Cassini Huygens observations. Icarus 185, 301–307 (2006) ADSGoogle Scholar
  15. B.G. Bills, F. Nimmo, Rotational dynamics and internal structure of Titan. Icarus 214(1), 351–355 (2011) ADSGoogle Scholar
  16. S.P.D. Birch, A.G. Hayes, P. Corlies, E.R. Stofan, J.D. Hofgartner, R.M.C. Lopes, R.D. Lorenz, J.I. Lunine, S.M. MacKenzie, M.J. Malaska, C.A. Wood (the Cassini RADAR Team), Morphologic evidence that Titan’s southern hemisphere basins are paleoseas. Icarus 310, 140–148 (2017).  https://doi.org/10.1016/j.icarus.2017.12.016 ADSCrossRefGoogle Scholar
  17. S.P.D. Birch, A.G. Hayes, J.D. Hofgartner, The raised rims of Titan’s small lakes, in 49th Lunar and Planetary Science Conference, 19–23 March, 2018, The Woodlands, Texas. LPI Contribution, vol. 2083 (2018) Google Scholar
  18. B.A. Black, J.T. Perron, D.M. Burr, S.A. Drummond, Estimating erosional exhumation on Titan from drainage network morphology. J. Geophys. Res. 117, E08006 (2012) ADSGoogle Scholar
  19. B.A. Black, J.T. Perron, D. Hemingway, E. Bailey, F. Nimmo, H. Zebker, Global drainage patterns and the origins of topographic relief on Earth, Mars, and Titan. Science 356, 727–731 (2017) ADSGoogle Scholar
  20. L.E. Bonnefoy, A.G. Hayes, P.O. Hayne, M.J. Malaska, A. Le Gall, A. Solomonidou, A. Lucas, Compositional and spatial variations in Titan dune and interdune regions from Cassini VIMS and RADAR. Icarus 270, 222–237 (2016) ADSGoogle Scholar
  21. C. Brassé, O. Munoz, P. Coll, F. Raulin, Optical constants of Titan aerosols and their tholins analogs: experimental results and modeling/observational data. Planet. Space Sci. 109–110, 159–174 (2015) ADSGoogle Scholar
  22. R.H. Brown, K.H. Baines, G. Bellucci, J.-P. Bibring, B.J. Buratti, F. Capaccioni et al., The Cassini Visual and Infrared Mapping Spectrometer (VIMS) investigation. Space Sci. Rev. 115, 111–168 (2004).  https://doi.org/10.1007/s11214-004-1453-x ADSCrossRefGoogle Scholar
  23. R.H. Brown, L.A. Soderblom, J.M. Soderblom, R.N. Clark, R. Jaumann, J.W. Barnes, C. Sotin, B. Buratti, K.H. Baines, P.D. Nicholson, The identification of liquid ethane in Titan’s Ontario Lacus. Nature 454, 607–610 (2008).  https://doi.org/10.1038/nature07100 ADSCrossRefGoogle Scholar
  24. B.J. Buratti, C. Sotin, K. Lawrence, R.H. Brown, S. Le Mouélic, J.M. Soderblom et al., A newly discovered impact crater in Titan’s Senkyo Cassini VIMS observations and comparison with other impact features. Planet. Space Sci. 60, 18–25 (2012) ADSGoogle Scholar
  25. D.M. Burr, J.P. Emery, R.D. Lorenz, G.C. Collins, P.A. Carling, Sediment transport by liquid surficial flow: application to Titan. Icarus 181, 235–242 (2006) ADSGoogle Scholar
  26. D.M. Burr, R.E. Jacobsen, D.L. Roth, C.B. Phillips, K.L. Mitchell, D. Viola, Fluvial network analysis on Titan: evidence for subsurface structures and west-to-east wind flow, southwestern Xanadu. Geophys. Res. Lett. 36, L22203 (2009) ADSGoogle Scholar
  27. D.M. Burr, S.A. Drummond, R. Cartwright, B.A. Black, J.T. Perron, Morphology of fluvial networks on Titan: evidence for structural control. Icarus 226, 742–759 (2013) ADSGoogle Scholar
  28. D.M. Burr, N.T. Bridges, J.R. Marshall, J.K. Smith, B.R. White, J.P. Emery, Higher-than-predicted saltation threshold wind speeds on Titan. Nature 517(7532), 60 (2015) ADSGoogle Scholar
  29. D.B. Campbell, G.J. Black, L.M. Carter, S.J. Ostro, Radar evidence for liquid surfaces on Titan. Science 302(5644), 431–434 (2003) ADSGoogle Scholar
  30. R. Cartwright, J.A. Clayton, R.L. Kirk, Channel morphometry, sediment transport, and implications for tectonic activity and surficial ages of Titan basins. Icarus 214(2), 561–570 (2011) ADSGoogle Scholar
  31. J.C. Castillo-Rogez, J.I. Lunine, Evolution of Titan’s rocky core constrained by Cassini observations. Geophys. Res. Lett. 37, L20205 (2010).  https://doi.org/10.1029/2010GL044398 ADSCrossRefGoogle Scholar
  32. B. Charnay, S. Lebonnois, Two boundary layers in Titan’s lower troposphere inferred from a climate model. Nat. Geosci. 5(2), 106–109 (2012) ADSGoogle Scholar
  33. B. Charnay, F. Forget, G. Tobie, C. Sotin, R. Wordsworth, Titan’s past and future: 3D modeling of a pure nitrogen atmosphere and geological implications. Icarus 241, 269–279 (2014) ADSGoogle Scholar
  34. B. Charnay, E. Barth, S. Rafkin, C. Narteau, S. Lebonnois, S. Rodriguez, S.C. Du Pont, A. Lucas, Methane storms as a driver of Titan’s dune orientation. Nat. Geosci. 8(5), 362 (2015) ADSGoogle Scholar
  35. M. Choukroun, S. Sotin, Is Titan’s shape caused by its meteorology and carbon cycle? Geophys. Res. Lett. 39, L04201 (2012).  https://doi.org/10.1029/2011GL050747 ADSCrossRefGoogle Scholar
  36. R.N. Clark, J.M. Curchin, J.W. Barnes, R. Jaumann, L. Soderblom, D.P. Cruikshank, R.H. Brown, S. Rodriguez, J. Lunine, K. Stephan, T.M. Hoefen, Detection and mapping of hydrocarbon deposits on Titan. J. Geophys. Res., Planets 115(E10), E10005 (2010).  https://doi.org/10.1029/2009JE003369 ADSCrossRefGoogle Scholar
  37. G.C. Collins, Relative rates of flucial bedrock incision on Titan and Earth. Geophys. Res. Lett. 32(22), L22202 (2005) ADSGoogle Scholar
  38. C. Cook-Hallett, J.W. Barnes, S.A. Kattenhorn, T. Hurford, J. Radebaugh, B. Stiles, M. Beuthe, Global contraction/expansion and polar lithospheric thinning on Titan from patterns of tectonism. J. Geophys. Res., Planets 120(6), 1220–1236 (2015) ADSGoogle Scholar
  39. D. Cordier, O. Mousis, J.I. Lunine, P. Lavvas, V. Vuitton, An estimate of the chemical composition of Titan’s lakes. Astrophys. J. 707, L128–L131 (2009).  https://doi.org/10.1088/0004-637X/707/2/L128 ADSCrossRefGoogle Scholar
  40. D. Cordier, O. Mousis, J.I. Lunine, S. Lebonnois, P. Rannou, P. Lavvas, L.Q. Lobo, A.G.M. Ferreira, Titan’s lakes chemical composition: sources of uncertainties and variability. Planet. Space Sci. 61(1), 99–107 (2012) ADSGoogle Scholar
  41. D. Cordier, F. García-Sánchez, D.N. Justo-García, G. Liger-Belair, Bubble streams in Titan’s seas a product of liquid \(\mbox{N}_{2} +\mbox{CH}_{4} + \mbox{C}_{2}\mbox{H}_{6}\) cryogenic mixture. Nat. Astron. 1, 1–4 (2017).  https://doi.org/10.1038/s41550-017-0102 CrossRefGoogle Scholar
  42. P. Corlies et al., Titan’s topography and shape at the end of the Cassini mission. Geophys. Res. Lett. 44(23), 11754–11761 (2017) ADSGoogle Scholar
  43. T. Cornet, O. Bourgeois, S. Le Mouélic, S. Rodriguez, T. Lopez Gonzalez, C. Sotin, G. Tobie, C. Fleurant, J.W. Barnes, R.H. Brown, Geomorphological significance of Ontario Lacus on Titan: integrated interpretation of Cassini VIMS, ISS and RADAR data and comparison with the Etosha Pan (Namibia). Icarus 218(2), 788–806 (2012) ADSGoogle Scholar
  44. T. Cornet, D. Cordier, T. Le Bahers, O. Bourgeois, C. Fleurant, S. Le Mouélic, N. Altobelli, Dissolution on Titan and on Earth: toward the age of Titan’s karstic landscapes. J. Geophys. Res., Planets 120, 1044–1074 (2015).  https://doi.org/10.1002/2014JE004738 ADSCrossRefGoogle Scholar
  45. T. Cornet, C. Fleurant, B. Signovert, D. Cordier, O. Bourgois, S. Le Mouélic, S. Rodriguez, A. Lucas, Landscape formation through dissolution on Titan: a 3D landscape evolution model, in Lunar and Planetary Science 2017 (2017). Abstract 1835 Google Scholar
  46. V. Cottini, C.A. Nixon, D.E. Jennings, R. de Kok, N.A. Teanby, P.G.J. Irwin, F.M. Flasar, Spatial and temporal variations in Titan’s surface temperatures from Cassini CIRS observations. Planet. Space Sci. 60(1), 62–71 (2012).  https://doi.org/10.1016/j.pss.2011.03.015 ADSCrossRefGoogle Scholar
  47. S. Courrech du Pont, C. Narteau, X. Gao, Two modes for dune orientation. Geology (2014).  https://doi.org/10.1130/G35657.1 CrossRefGoogle Scholar
  48. A. Coustenis, E. Lellouch, R. Wittemberg, J.-P. Maillard, C.P. Mckay, Modelling Titan’s surface from near-IR FTS/CFHT1995–1996 spectra, in 22nd General Assembly of the European Geophysical Society, 21–25 April, Vienne (1997) Google Scholar
  49. M.E. Davies, T.R. Colvin, P.G. Rogers, P.W. Chodas, W.L. Sjogren, E.L. Akim, V.A. Stepaniants, Z.P. Vlasova, A.I. Zakharov, The rotation period, direction of the North Pole, and geodetic control network of Venus. J. Geophys. Res. 97(E8), 13141–13151 (1992) ADSGoogle Scholar
  50. C. Elachi, M.D. Allison, L. Borganelli, P. Encrenaz, E. Im, M.A. Janssen, W.T.K. Johnson, R.L. Kirk, R.D. Lorenz, J.I. Lunine, D.O. Muhleman, S.J. Ostro, G. Picardi, F. Posa, C.G. Rapley, L.E. Roth, S. Seu, L.A. Soderblom, S. Vetrella, S.D. Wall, C.A. Wood, H.A. Zebker, Radar: The Cassini Titan Radar Mapper. Space Sci. Rev. 115, 71–110 (2004) ADSGoogle Scholar
  51. E. Elachi et al., Cassini Radar views the surface of Titan. Science 308, 970–974 (2005) ADSGoogle Scholar
  52. R.C. Ewing, A.G. Hayes, A. Lucas, Sand dune patterns on Titan controlled by long-term climate cycles. Nat. Geosci. 8(1), 15–19 (2015) ADSGoogle Scholar
  53. S.G. Fryberger, G. Dean, Dune forms and wind regime, in A Study of Global Sand Seas, ed. by E.D. McKee. U.S. Geol. Surv. Prof. Pap., vol. 1052 (1979), pp. 137–169 Google Scholar
  54. C.R. Glein, E.L. Shock, A geochemical model of non-ideal solutions in the methane-ethane-propane-nitrogen-actylene system on Titan. Geochim. Cosmochim. Acta 115, 217–240 (2013).  https://doi.org/10.1016/j.gca.2013.03.030 ADSCrossRefGoogle Scholar
  55. R. Greeley, J.D. Iversen, Wind as a Geological Process: On Earth, Mars, Venus and Titan, vol. 4 (Cambridge University Press, Cambridge, 1987) Google Scholar
  56. C.A. Griffith, L. Doose, M.G. Tomasko, P.F. Penteado, C. See, Radiative transfer analyses of Titan’s tropical atmosphere. Icarus 218(2), 975–988 (2012) ADSGoogle Scholar
  57. C. Grima, M. Mastrogiuseppe, A.G. Hayes, S.D. Wall, R.D. Lorenz, J.D. Hofgartner, B.C. Stiles, C. Elachi (The Cassini RADAR Team), Surface roughness of Titan’s hydrocarbon seas. Earth Planet. Sci. Lett. 474, 20–24 (2017) ADSGoogle Scholar
  58. A.G. Hayes, The lakes and seas of Titan. Annu. Rev. Earth Planet. Sci. 44, 57–83 (2016) ADSMathSciNetGoogle Scholar
  59. A. Hayes, O. Aharonson, P. Callahan, C. Elachi, Y. Gim, R. Kirk, K. Lewis, R. Lopes, R. Lorenz, J. Lunine et al., Hydrocarbon lakes on Titan: distribution and interaction with a porous regolith. Geophys. Res. Lett. 35(9), L09204 (2008) ADSGoogle Scholar
  60. A.G. Hayes, A.S. Wolf, O. Aharonson, H. Zebker, R. Lorenz, R.L. Kirk, P. Paillou, J. Lunine, L. Wye, P. Callahan et al., Bathymetry and absorptivity of Titan’s Ontario Lacus. J. Geophys. Res. 115(E9), E09009 (2010) ADSGoogle Scholar
  61. A.G. Hayes, O. Aharonson, J.I. Lunine, R.L. Kirk, H.A. Zebker, L.C. Wye, R.D. Lorenz, E.P. Turtle, P. Paillou, G. Mitri et al., Transient surface liquid in Titan’s polar regions from Cassini. Icarus 211(1), 655–671 (2011) ADSGoogle Scholar
  62. A.G. Hayes, R.D. Lorenz, M.A. Donelan et al., Wind driven capillary-gravity waves on Titan’s lakes: hard to detect or non-existent? Icarus 225, 403–412 (2013).  https://doi.org/10.1016/j.icarus.2013.04.004 ADSCrossRefGoogle Scholar
  63. A.G. Hayes, S.P.D. Birch, W.E. Dietrich, A.D. Howard, R.L. Kirk, V. Poggiali, M. Mastrogiuseppe, R.J. Michaelides, P.M. Corlies, J.M. Moore et al., Topographic constraints on the evolution and connectivity of Titan’s lacustrine basins. Geophys. Res. Lett. 44(23), 11,745–11,753 (2017) Google Scholar
  64. A.G. Hayes, R.D. Lorenz, J.I. Lunine, A post-Cassini view of Titan’s methane-based hydrologic cycle. Nat. Geosci. 11, 306–313 (2018) ADSGoogle Scholar
  65. D.J. Hemingway, F. Nimmo, H. Zebker, L. Iess, A rigid and weathered ice shell on Titan. Nature 500, 550–552 (2013) ADSGoogle Scholar
  66. D.J. Hemingway, L. Iess, R. Tajeddine, G. Tobie, The interior of Enceladus, in Enceladus and the Icy Moons of Saturn, ed. by P.M. Schenk, R.N. Clark, C.J.A. Howett, A.J. Verbiscer (University of Arizona Press, Tucson, 2018), pp. 57–77 Google Scholar
  67. M. Hirtzig, B. Bézard, E. Lellouch, A. Coustenis, C. de Bergh, P. Drossart, A. Campargue, V. Boudon, V. Tyuterev, P. Rannou, T. Cours, S. Kassi, A. Nikitin, D. Mondelain, S. Rodriguez, S. Le Mouélic, Titan’s surface and atmosphere from Cassini/VIMS data with updated methane opacity. Icarus 226, 470–486 (2013) ADSGoogle Scholar
  68. J.D. Hofgartner, A.G. Hayes, J.I. Lunine et al., Transient features in a Titan sea. Nat. Geosci. 7, 493–496 (2014).  https://doi.org/10.1038/ngeo2190 ADSCrossRefGoogle Scholar
  69. J.D. Hofgartner, A.G. Hayes, J.I. Lunine et al., Titan’s “Magic Islands”: transient features in a hydrocarbon sea. Icarus 271, 338–349 (2016) ADSGoogle Scholar
  70. S. Hörst, Titan’s atmosphere and climate. J. Geophys. Res., Planets 122, 432–482 (2017).  https://doi.org/10.1002/2016JE005240 ADSCrossRefGoogle Scholar
  71. M. Howard, S. Bastea, L.E. Fried, B. Khare, C.P. McKay, Titans’ interior chemical composition: a thermo chemical assessment, in American Astronomical Society, DPS Meeting, vol. 41 (2009) Google Scholar
  72. A.D. Howard, S. Breton, J.M. Moore, Formation of gravel pavements during fluvial erosion as an explanation for persistence of ancient cratered terrain on Titan and Mars. Icarus 270, 100–113 (2016).  https://doi.org/10.1016/j.icarus.2015.05.034 ADSCrossRefGoogle Scholar
  73. L. Iess et al., Gravity field, shape, and moment of inertia of Titan. Science 327, 1367 (2010).  https://doi.org/10.1126/science.1182583 ADSCrossRefGoogle Scholar
  74. L. Iess et al., The tides of Titan. Science 337, 457 (2012).  https://doi.org/10.1126/science.1219631 ADSCrossRefGoogle Scholar
  75. M.A. Janssen, R.D. Lorenz, R. West, F. Paganelli, R.M. Lopes, R.L. Kirk, C. Elachi, S.D. Wall, W.T.K. Johnson, Y. Anderson, R.A. Boehmer, P. Callahan, Y. Gim, G.A. Hamilton, K.D. Kelleher, L. Roth, B. Stiles, A. Le Gall (the Cassini Radar Team), Titan’s surface at 2.2-cm wavelength imaged by the Cassini RADAR Radiometer: calibration and first results. Icarus 200, 222–239 (2009).  https://doi.org/10.1016/j.icarus.2008.10.017 ADSCrossRefGoogle Scholar
  76. M.A. Janssen, A. Le Gall, L.C. Wye, Anomalous radar backscatter from Titan’s surface? Icarus 212(1), 321–328 (2011) ADSGoogle Scholar
  77. M.A. Janssen, A. Le Gall, R.M. Lopes, R.D. Lorenz, M.J. Malaska, A.G. Hayes, C.D. Neish, A. Solomonidou, K.L. Mitchell, J. Radebaugh, S.J. Keihm, Titan’s surface at 2.18-cm wavelength imaged by the Cassini RADAR radiometer: results and interpretations through the first ten years of observation. Icarus 270, 443–459 (2016) ADSGoogle Scholar
  78. R. Jaumann, R.H. Brown, K. Stephan, J.W. Barnes, L.A. Soderblom, C. Sotin, S. Le Mouélic, R.N. Clark, J. Soderblom, B.J. Buratti et al., Fluvial erosion and post-erosional processes on Titan. Icarus 197(2), 526–538 (2008) ADSGoogle Scholar
  79. D.E. Jennings et al., Titan’s surface brightness temperatures. Astrophys. J. 691, L103–L105 (2009) ADSGoogle Scholar
  80. D.E. Jennings et al., Surface temperatures on Titan during Northern winter and spring. Astrophys. J. Lett. 816, L17 (2016) ADSGoogle Scholar
  81. E. Karkoschka, A. McEwen, J. Perry, Creating the Best Global Mosaic of Titan’s Surface Albedo Using Cassini Images. AAS/Division for Planetary Sciences Meeting Abstract #49 (2017) Google Scholar
  82. R.L. Kirk, E. Howington-Kraus, A.G. Hayes, R.M.C. Lopes, R.D. Lorenz, J.I. Lunine, K.L. Mitchell, E.R. Stofan, S.D. Wall, La Sotra y los otros: topographic evidence for (and against) cryovolcanism on Titan, in Eos Trans. AGU, 91(52), Fall Meet. Suppl. (2010). Abstract P22A-03 Google Scholar
  83. D.G. Korycansky, K.J. Zahnle, Modeling crater populations on Venus and Titan. Planet. Space Sci. 53, 695–710 (2005) ADSGoogle Scholar
  84. M.H. Langhans, R. Jaumann, K. Stephan, R.H. Brown, B.J. Buratti, R.N. Clark, K.H. Baines, P.D. Nicholson, R.D. Lorenz, L.A. Soderblom et al., Titan’s fluvial valleys: morphology, distribution, and spectral properties. Planet. Space Sci. 60(1), 34–51 (2012) ADSGoogle Scholar
  85. A. Le Gall, M.A. Janssen, P. Paillou, R.D. Lorenz, S.D. Wall, Radar-bright channels on Titan. Icarus 207, 948–958 (2010) ADSGoogle Scholar
  86. A. Le Gall, M.A. Janssen, L.C. Wye, A.G. Hayes, J. Radebaugh, C. Savage, H. Zebker, R.D. Lorenz, J.I. Lunine, R.L. Kirk, R.M.C. Lopes, S. Wall, P. Callahan, E.R. Stofan, T. Farr (the Cassini Radar Team), Cassini SAR, radiometry, scatterometry and altimetry observations of Titan’s dune fields. Icarus 213, 608–624 (2011) ADSGoogle Scholar
  87. A. Le Gall, A.G. Hayes, R. Ewing, M.A. Janssen, J. Radebaugh, C. Savage, P. Encrenaz (the Cassini Radar Team), Latitudinal and altitudinal controls on Titan’s dune field morphometry. Icarus 217, 231–242 (2012) ADSGoogle Scholar
  88. A. Le Gall, M.J. Malaska, R.D. Lorenz, M.A. Janssen, T. Tokano, A.G. Hayes, M. Mastrogiuseppe, J.I. Lunine, G. Veyssière, P. Encrenaz, O. Karatekin, Composition, seasonal change and bathymetry of Ligeia Mare, Titan, derived from its microwave thermal emission. J. Geophys. Res., Planets 121, 233–251 (2016) ADSGoogle Scholar
  89. S. Le Mouelic, P. Paillou, M.A. Janssen, J.W. Barnes, S. Rodriguez, C. Sotin, R.H. Brown, K.H. Baines, B.J. Buratti, R.N. Clark, M. Crapeau, P.J. Encrenaz, R. Jaumann, D. Geudtner, F. Paganelli, L. Soderblom, G. Tobie, S. Wall, Mapping and interpretation of Sinlap crater on Titan using Cassini VIMS and RADAR data. J. Geophys. Res. 113, E04003 (2008).  https://doi.org/10.1029/2007JE002965 ADSCrossRefGoogle Scholar
  90. E. Lellouch, Titan’s zoo of clouds. Science 311, 186–187 (2006) Google Scholar
  91. M.T. Lemmon, E. Karkoschka, M. Tomasko, Titan’s rotation—surface feature observed. Icarus 103(2), 329–332 (1993) ADSGoogle Scholar
  92. J.S. Lewis, Satellites of the outer planets: their physical and chemical nature. Icarus 15, 174–185 (1971) ADSGoogle Scholar
  93. Z.Y-C. Liu, J. Radebaugh, R.A. Harris, E.H. Christiansen, C.D. Neish, R.L. Kirk, R.D. Lorenz (the Cassini RADAR Team), The tectonics of Titan: global structural mapping from Cassini RADAR. Icarus 270, 14–29 (2016a) ADSGoogle Scholar
  94. Z.Y.-C. Liu, J. Radebaugh, R.A. Harris, E.H. Christiansen, S. Rupper, Role of fluids in the tectonic evolution of Titan. Icarus 270, 2–13 (2016b) ADSGoogle Scholar
  95. R.M.C. Lopes, K.L. Mitchell, E.R. Stofan, J.I. Lunine, R. Lorenz, F. Paganelli, R.L. Kirk, C.A. Wood, S.D. Wall, L.E. Robshaw, A.D. Fortes, C.D. Neish, J. Radebaugh, E. Reffet, S.J. Ostro, C. Elachi, M.D. Allison, Y. Anderson, R. Boehmer, G. Boubin, P. Callahan, P. Encrenaz, E. Flamini, G. Francescetti, Y. Gim, G. Hamilton, S. Hensley, M.A. Janssen, W.T.K. Johnson, K. Kelleher, D.O. Muhleman, G. Ori, R. Orosei, G. Picardi, F. Posa, L.E. Roth, R. Seu, S. Shaffer, L.A. Soderblom, B. Stiles, S. Vetrella, R.D. West, L. Wye, H.A. Zebker, Cryovolcanic features on Titan’s surface as revealed by the Cassini Titan Radar Mapper. Icarus 186, 395–412 (2007) ADSGoogle Scholar
  96. R.M.C. Lopes, E.R. Stofan, R. Peckyno, J. Radebaugh, K.L. Mitchell, G. Mitri, C.A. Wood, R.L. Kirk, S.D. Wall, J.I. Lunine, A. Hayes, R. Lorenz, T. Farr, L. Wye, J. Craig, R.J. Ollerenshaw, M. Janssen, A. LeGall, F. Paganelli, R. West, B. Stiles, P. Callahan, Y. Anderson, P. Valora, L. Soderblom (the Cassini RADAR Team), Distribution and interplay of geologic processes on Titan from Cassini RADAR data. Icarus 205, 540–588 (2010).  https://doi.org/10.1016/j.icarus.2009.08.010 ADSCrossRefGoogle Scholar
  97. R.M.C. Lopes, S.A. Fagents, K.L. Mitchell, T.K.P. Gregg, Planetary volcanism, in Modeling Volcanic Processes, ed. by S.A. Fagents, T.K.P. Gregg, R.M.C. Lopes (Cambridge University Press, Cambridge, 2013a), pp. 384–413 Google Scholar
  98. R.M.C. Lopes, R.L. Kirk, K.L. Mitchell, A. LeGall, J.W. Barnes, A. Hayes, J. Kargel, L. Wye, J. Radebaugh, E.R. Stofan, M. Janssen, C. Neish, S. Wall, C.A. Wood, J.I. Lunine, M. Malaska, Cryovolcanism on Titan: new results from Cassini RADAR and VIMS. J. Geophys. Res., Planets 118, 1–20 (2013b).  https://doi.org/10.1002/jgre.20062 CrossRefGoogle Scholar
  99. R.M.C. Lopes, M.J. Malaska, A. Solomonidou, A. LeGall, M.A. Janssen, C. Neish, E.P. Turtle, S.P.D. Birch, A.G. Hayes, J. Radebaugh, A. Coustenis, A. Schoenfeld, B.W. Stiles, R.L. Kirk, K.L. Mitchell, E.R. Stofan, K.J. Lawrence (the Cassini RADAR Team), Nature, distribution, and origin of Titan’s undifferentiated plains (“blandlands”). Icarus 270, 162–182 (2016) ADSGoogle Scholar
  100. J.M. Lora, J.I. Mitchell, Titan’s asymmetric lake distribution mediated by methane transport due to atmospheric eddies. Geophys. Res. Lett. 42(15), 6213–6220 (2015) ADSGoogle Scholar
  101. J.M. Lora, J.I. Lunine, J.L. Russell, A.G. Hayes, Simulations of Titan’s paleoclimate. Icarus 243, 264–273 (2014) ADSGoogle Scholar
  102. R.D. Lorenz, The surface of Titan in the context of ESA’s Huygens probe. ESA J. 17, 275–292 (1993) ADSGoogle Scholar
  103. R.D. Lorenz, Pillow lava on Titan: expectations and constraints on cryovolcanic processes. Planet. Space Sci. 44(9), 1021–1028 (1996) ADSGoogle Scholar
  104. R.D. Lorenz, Physics of saltation and sand transport on Titan: a brief review. Icarus 230, 162–167 (2014) ADSGoogle Scholar
  105. R.D. Lorenz, A.G. Hayes, The growth of wind-waves in Titan’s hydrocarbon seas. Icarus 219(1), 468–475 (2012).  https://doi.org/10.1016/j.icarus.2012.03.002 ADSCrossRefGoogle Scholar
  106. R.D. Lorenz, J.I. Lunine, Erosion on Titan: past and present. Icarus 196, 79–91 (1996) ADSGoogle Scholar
  107. R.D. Lorenz, J.I. Lunine, Titan’s surface before Cassini. Planet. Space Sci. 53, 557–576 (2005) ADSGoogle Scholar
  108. R.D. Lorenz, J. Radebaugh, Global pattern of Titan’s dunes: radar survey from the Cassini prime mission. Geophys. Res. Lett. 36(3), L03202 (2009) ADSGoogle Scholar
  109. R.D. Lorenz, J.R. Zimbelman, Dune Worlds: How Windblown Sand Shapes Planetary Landscapes (Springer, Berlin, 2014) Google Scholar
  110. R.D. Lorenz, J.I. Lunine, J.A. Grier, M.A. Fisher, Prediction of aeolian features on planets: application to Titan paleoclimatology. J. Geophys. Res., Planets 100(E12), 26377–26386 (1995) ADSGoogle Scholar
  111. R.D. Lorenz, C.P. McKay, J.I. Lunine, Photochemically driven collapse of Titan’s atmosphere. Science 275, 642–644 (1997) ADSGoogle Scholar
  112. R.D. Lorenz, G. Biolluz, P. Encrenaz, M.A. Janssen, R.D. West, D.O. Muhleman, Cassini RADAR: prospects for Titan surface investigations using the microwave radiometer. Planet. Space Sci. 51(4–5), 353–364 (2003) ADSGoogle Scholar
  113. R.D. Lorenz, C.A. Griffith, J.I. Lunine, C.P. McKay, N.O. Rennò, Convective plumes and the scarcity of Titan’s clouds. Geophys. Res. Lett. 32(1), L01201 (2005) ADSGoogle Scholar
  114. R.D. Lorenz, S. Wall, J. Radebaugh, G. Boubin, E. Reffet, M. Janssen, E. Stofan, R. Lopes, R. Kirk, C. Elachi, J. Lunine, The sand seas of Titan: Cassini RADAR observations of longitudinal dunes. Science 312(5774), 724–727 (2006) ADSGoogle Scholar
  115. R.D. Lorenz, C.A. Wood, J.I. Lunine, S.D. Wall, R.M. Lopes, K.L. Mitchell, F. Paganelli, Y.Z. Anderson, L. Wye, C. Tsai, H. Zebker, E.R. Stofan, Titan’s young surface: initial impact crater survey by Cassini RADAR and model comparison. Geophys. Res. Lett. 34, L07204 (2007) ADSGoogle Scholar
  116. R.D. Lorenz, B. Stiles, R.L. Kirk, M. Allison, P. Persi del Marmo, L. Iess, J.I. Lunine, S.J. Ostro, S. Hensley, Titan’s rotation reveals an internal ocean and changing zonal winds. Science 319, 1649–1651 (2008a) ADSGoogle Scholar
  117. R.D. Lorenz, K.L. Mitchell, R.L. Kirk, A.G. Hayes, H.A. Zebker, P. Paillou, J. Radebaugh, J.I. Lunine, M.A. Janssen, S.D. Wall, R.M. Lopes, B. Stiles, S. Ostro, G. Mitri, E.R. Stofan (the Cassini RADAR Team), Titan’s inventory of organic surface materials. Geophys. Res. Lett. 35, L02206 (2008b).  https://doi.org/10.1029/2007GL032118 ADSCrossRefGoogle Scholar
  118. R.D. Lorenz, R.M. Lopes, F. Paganelli, J.I. Lunine, R.L. Kirk, K.L. Mitchell, L.A. Soderblom, E.R. Stofan, G. Ori, M. Myers, H. Miyamoto, J. Radebaugh, B. Stiles, S.D. Wall, C.A. Wood (the Cassini RADAR Team), Fluvial channels on Titan: initial Cassini RADAR observations. Planet. Space Sci. 56, 1132–1144 (2008c) ADSGoogle Scholar
  119. R.D. Lorenz, P. Claudin, B. Andreotti, J. Radebaugh, T. Tokano, A 3 km atmospheric boundary layer on Titan indicated by dune spacing and Huygens data. Icarus 205, 719–721 (2010).  https://doi.org/10.1016/j.icarus.2009.08.002 ADSCrossRefGoogle Scholar
  120. R.D. Lorenz et al., A global topographic map of Titan. Icarus 255, 367–377 (2013).  https://doi.org/10.1016/j.icarus.2013.04.002 ADSCrossRefGoogle Scholar
  121. A. Lucas, S. Rodriguez, C. Narteau, B. Charnay, S.C. Pont, T. Tokano, A. Garcia, M. Thiriet, A.G. Hayes, R.D. Lorenz, O. Aharonson, Growth mechanisms and dune orientation on Titan. Geophys. Res. Lett. 41(17), 6093–6100 (2014).  https://doi.org/10.1002/2014GL060971 ADSCrossRefGoogle Scholar
  122. J.I. Lunine, R.D. Lorenz, Rivers, lakes, dunes, and rain: crustal processes in Titan’s methane cycle. Annu. Rev. Earth Planet. Sci. 37(1), 299–320 (2009) ADSGoogle Scholar
  123. J.I. Lunine, R.D. Lorenz, W.K. Hartmann, Some speculations on Titans past, present and future. Planet. Space Sci. 46(9–10), 1099–1107 (1998) ADSGoogle Scholar
  124. J.I. Lunine, C. Elachi, S.D. Wall, M.A. Janssen, M.D. Allison, Y. Anderson et al., Titan’s diverse landscapes as evidenced by Cassini RADAR’s third and fourth looks. Icarus 195, 415–433 (2008) ADSGoogle Scholar
  125. S.M. MacKenzie, J.W. Barnes, C. Sotin, J.M. Soderblom, S. Le Mouélic, S. Rodriguez, K.H. Baines, B.J. Buratti, R.N. Clark, P.D. Nicholson, T.B. McCord, Evidence of Titan’s climate history from evaporite distribution. Icarus 243, 191–207 (2014) ADSGoogle Scholar
  126. M.J. Malaska, R. Hodyss, Dissolution of benzene, naphthalene, and biphenyl in a simulated Titan lake. Icarus 242, 74–81 (2014).  https://doi.org/10.1016/j.icarus.2014.07.022 ADSCrossRefGoogle Scholar
  127. M. Malaska, J. Radebaugh, R. Lorenz, K. Mitchell, T. Farr, E. Stofan, Identification of karst-like terrain on Titan from valley analysis, in Lunar and Planetary Science Conference, vol. 41 (2010). Abstract 1544 Google Scholar
  128. M. Malaska, J. Radebaugh, K. Mitchell, R. Lopes, S. Wall, R. Lorenz, Surface dissolution model for Titan karst, in First International Planetary Cave Research Workshop, October 2011 (2011a). Abstract 8018 Google Scholar
  129. M. Malaska, J. Radebaugh, A. Le Gall, K. Mitchell, R. Lopes, S. Wall, High-volume meandering channels in Titan’s south polar region, in Lunar and Planetary Science Conference (2011b). Abstract 1562 Google Scholar
  130. M.J. Malaska, R.M. Lopes, A.G. Hayes, J. Radebaugh, R.D. Lorenz, E.P. Turtle, Material transport map of Titan: the fate of dunes. Icarus 270, 183–196 (2016a).  https://doi.org/10.1016/j.icarus.2015.09.029 ADSCrossRefGoogle Scholar
  131. M.J. Malaska, R.M.C. Lopes, D.A. Williams, C.D. Neish, A. Solominidou, J.M. Soderblom, A.M. Schoenfeld, S.P.D. Birch, A.G. Hayes, A. Le Gall, M.A. Janssen, T.G. Farr, R.D. Lorenz, J. Radebaugh, E.P. Turtle, Geomorphological map of the Afekan Crater region, Titan: terrain relationships in the equatorial and mid-latitude regions. Icarus 270, 130–161 (2016b).  https://doi.org/10.1016/j.icarus.2016.02.021 ADSCrossRefGoogle Scholar
  132. M.J. Malaska, R. Hodyss, J.I. Lunine, A.G. Hayes, J.D. Hofgartner, G. Hollyday, R.D. Lorenz, Laboratory measurements of nitrogen dissolution in Titan lake fluids. Icarus 289, 94–105 (2017a).  https://doi.org/10.1016/j.icarus.2017.01.033 ADSCrossRefGoogle Scholar
  133. M.J. Malaska, R.M.C. Lopes, K.L. Mitchell, J. Radebaugh, T. Verlander, A. Schoenfeld, Classification of labyrinth terrains on Titan, in Lunar and Planetary Science Conference (2017b). Abstract 2406 Google Scholar
  134. M. Mastrogiuseppe, V. Poggiali, A. Hayes, R. Lorenz, J. Lunine, G. Picardi, R. Seu, E. Flamini, G. Mitri, C. Notarnicola, Ph. Paillou, H. Zebker, The bathymetry of a Titan sea. Geophys. Res. Lett. 41(5), 1432–1437 (2014) ADSGoogle Scholar
  135. M. Mastrogiuseppe, A. Hayes, V. Poggiali, R. Seu, J.I. Lunine, J.D. Hofgartner, Radar sounding using the Cassini altimeter: waveform modeling and Monte Carlo approach for data inversion of observations of Titan’s seas. IEEE Trans. Geosci. Remote Sens. 54(10), 5646–5656 (2016) ADSGoogle Scholar
  136. M. Mastrogiuseppe, A.G. Hayes, V. Poggiali, J.I. Lunine, R.D. Lorenz, R. Seu, A. Le Gall, C. Notarnicola, K.L. Mitchell, M. Malaska, S.P.D. Birch, Bathymetry and composition of Titan’s Ontario Lacus derived from Monte Carlo-based waveform inversion of Cassini RADAR altimetry data. Icarus 300, 203–209 (2018) ADSGoogle Scholar
  137. T.B. McCord, G.B. Hansen, B.J. Buratti, R.N. Clark, D.P. Cruikshank, E. D’Aversa, C.A. Griffith, E.K.H. Baines, R.H. Brow, C.M. Dalle Ore, G. Filacchione, V. Formisano, C.A. Hibbitts, R. Jaumann, J.I. Lunine, R.M. Nelson, C. Sotin (the Cassini VIMS Team), Composition of Titan’s surface from Cassini VIMS. Planet. Space Sci. 54, 1524–1539 (2006).  https://doi.org/10.1016/j.pss.2006.06.007 ADSCrossRefGoogle Scholar
  138. T.B. McCord, P. Hayne, J.-P. Combe, G.B. Hansen, J. Barnes, S. Rodriguez, S. Le Mouelic, K. Baines, B. Buratti, C. Sotin, P. Nicholson, R. Jaumann, R. Nelson (Cassini VIMS Team), Titan’s surface: search for spectral diversity and composition using the Cassini VIMS investigation. Icarus 194, 212–242 (2008) ADSGoogle Scholar
  139. G.D. McDonald, A.G. Hayes, R.C. Ewing, J.M. Lora, C.E. Newman, T. Tokano, A. Lucas, A. Soto, G. Chen, Variations in Titan’s dune orientations as a result of orbital forcing. Icarus 270, 197–210 (2016) ADSGoogle Scholar
  140. J. Méndez-Harper, G.D. McDonald, J. Dufek, M.J. Malaska, D.M. Burr, A.G. Hayes, J. McAdams, J.J. Wray, The electrified sands of Titan. Nat. Geosci. 10, 260–265 (2017).  https://doi.org/10.1038/ngeo2921 ADSCrossRefGoogle Scholar
  141. R. Meriggiola, L. Iess, B.W. Stiles, J.I. Lunine, G. Mitri, The rotational dynamics of Titan from Cassini RADAR images. Icarus 275, 183–192 (2016) ADSGoogle Scholar
  142. J.L. Mitchell, The drying of Titan’s dunes: Titan’s methane hydrology and its impact on atmospheric circulation. J. Geophys. Res., Planets 113(E8), E08015 (2008) ADSGoogle Scholar
  143. J.L. Mitchell, J.M. Lora, The climate of Titan. Ann. Rev. Earth Planet. Sci. 44, 353–380 (2016).  https://doi.org/10.1146/annurev-earth-060115-012428 ADSCrossRefGoogle Scholar
  144. K.L. Mitchell, M.B. Barmatz, C.S. Jamieson, R.D. Lorenz, J.I. Lunine, Laboratory measurements of cryogenic liquid alkane microwave absorptivity and implications for the composition of Ligeia Mare, Titan. Geophys. Res. Lett. 42, 1340–1345 (2015) ADSGoogle Scholar
  145. G. Mitri, M.T. Bland, A.P. Showman, J. Radebaugh, B. Stiles, R.M.C. Lopes, J.I. Lunine, R.T. Pappalardo, Mountains on Titan: modeling and observations. J. Geophys. Res. 115, E10002 (2010).  https://doi.org/10.1029/2010JE003592 ADSCrossRefGoogle Scholar
  146. G. Mitri et al., Shape, topography, gravity anomalies and tidal deformation of Titan. Icarus 236, 169–177 (2014) ADSGoogle Scholar
  147. J.M. Moore, R.T. Pappalardo, Titan: an exogenic world? Icarus 212, 790–806 (2011) ADSGoogle Scholar
  148. J.M. Moore, A.D. Howard, A.M. Morgan, The landscape of Titan as witness to its climate evolution. J. Geophys. Res., Planets 119, 2060–2077 (2014).  https://doi.org/10.1002/2014JE004608 ADSCrossRefGoogle Scholar
  149. C.D. Neish, R.D. Lorenz, Titan’s global crater population: a new assessment. Planet. Space Sci. 60(1), 26–33 (2012) ADSGoogle Scholar
  150. C.D. Neish, R.D. Lorenz, Elevation distribution of Titan’s craters suggests extensive wetlands. Icarus 228, 27–34 (2014) ADSGoogle Scholar
  151. C.D. Neish, R.D. Lorenz, R.L. Kirk, L.C. Wye, Radarclinometry of the sand seas of Africa’s Namibia and Saturn’s moon Titan. Icarus 208, 385–394 (2010) ADSGoogle Scholar
  152. C.D. Neish, R.L. Kirk, R.D. Lorenz, V.J. Bray, P. Schenk, B.W. Stiles et al., Crater topography on Titan: implications for landscape evolution. Icarus 223, 82–90 (2013) ADSGoogle Scholar
  153. C.D. Neish, J.W. Barnes, C. Sotin, S. MacKenzie, J.M. Soderblom, S. Le Mouélic et al., Spectral properties of Titan’s impact craters imply chemical weathering of its surface. Geophys. Res. Lett. 42, 3746–3754 (2015) ADSGoogle Scholar
  154. C.D. Neish, J.L. Molaro, J.M. Lora, A.D. Howard, R.L. Kirk, P. Schenk et al., Fluvial erosion as a mechanism for crater modification on Titan. Icarus 270, 114–129 (2016) ADSGoogle Scholar
  155. R.M. Nelson, L.W. Kamp, D.L. Matson, P.G.J. Irwin, K.H. Baines, M.D. Boryta, F.E. Leader, R. Jaumann, W.D. Smythe, C. Sotin, R.N. Clark, D.P. Cruikshank, P. Drossart, J.C. Pearl, B.W. Hapke, J. Lunine, M. Combes, G. Bellucci, J.-P. Bibring, F. Capaccioni, P. Cerroni, A. Coradini, V. Formisano, G. Filacchione, R.Y. Langevin, T.B. McCordo, V. Mennella, P.D. Nicholson, B. Sicardy, Saturn’s Titan: surface change, ammonia, and implications for atmospheric and tectonic activity. Icarus 199, 429–441 (2009a).  https://doi.org/10.1016/j.icarus.2008.08.013 ADSCrossRefGoogle Scholar
  156. R.M. Nelson, L.W. Kamp, R.M.C. Lopes, D.L. Matson, R.L. Kirk, B.W. Hapke, S.D. Wall, M.D. Boryta, F.E. Leader, W.D. Smythe, K.L. Mitchell, K.H. Baines, R. Jaumann, C. Sotin, R.N. Clark, D.P. Cruikshank, P. Drossart, J.I. Lunine, M. Combes, G. Bellucci, J-P. Bibring, F. Capaccioni, P. Cerroni, A. Coradini, V. Formisano, G. Filacchione, Y. Langevin, T.B. McCord, V. Mennella, P.D. Nicholson, B. Sicardy, P.G.J. Irwin, Photometric changes on Saturn’s moon Titan: evidence for cryovolcanism. Geophys. Res. Lett. 36, L04202 (2009b).  https://doi.org/10.1029/2008GL036206 ADSCrossRefGoogle Scholar
  157. H.B. Niemann, S.K. Atreya, S.J. Bauer, G.R. Carignan, J.E. Demick, R.L. Frost, D. Gautier, J.A. Haberman, D.N. Harpold, D.M. Hunten, G. Israel, J.I. Lunine, W.T. Kasprzak, T.C. Owen, M. Paulkovich, F. Raulin, E. Raaen, S.H. Way, Huygens Probe Gas Chromatograph Mass Spectrometer: the atmosphere and surface of Titan. Nature (2005).  https://doi.org/10.1038/nature04122 CrossRefGoogle Scholar
  158. F. Nimmo, B.G. Bills, Shell thickness variations and the long-wavelength topography of Titan. Icarus 208, 896–904 (2010) ADSGoogle Scholar
  159. C. Nixon, R. Clark, R. Courtin, A. Hayes, R. Lopes, R. Yelle, C. Sotin, A. Rymer, R. Johnson, R. Lorenz, M. Mastrogiuseppe, H. Smith, D. Strobel, R. Achterberg, A. Buch, K. Mandt, D. Mitchell, F. Raulin, E. Turtle, L. Iess, V. Vuitton, A. Solomonidou, R. West, P. Coll, Titan’s cold case files—outstanding questions after Cassini-Huygens. Planet. Space Sci. 155, 50–72 (2018) ADSGoogle Scholar
  160. D. Northrup, J. Radebaugh, E.H. Christiansen, S. Tass, L. Kerber, Yardang and dune classification on Titan through length, width, and Sinuosity, in 49th Lunar and Planetary Science Conference, 19–23 March, 2018, The Woodlands, Texas. LPI Contribution, vol. 2083 (2018) Google Scholar
  161. F. Paganelli, M.A. Janssen, B. Stiles, R. West, R.D. Lorenz, J.I. Lunine, S.D. Wall, P. Callahan, R.M. Lopes, E. Stofan, R.L. Kirk, W.T.K. Johnson, L. Roth, C. Elachi (the Cassini Radar Team), Titan’s surface from the Cassini Radar SAR and high resolution radiometry data of the first five flybys. Icarus 191, 211–222 (2007) ADSGoogle Scholar
  162. F. Paganelli, M.A. Janssen, R.M. Lopes, E. Stofan, S.D. Wall, R.D. Lorenz, J.I. Lunine, R.L. Kirk, L. Roth, C. Elachi (the Cassini Radar Team), Titan’s surface from the Cassini RADAR radiometry data during SAR mode. Planet. Space Sci. 56, 100–108 (2008) ADSGoogle Scholar
  163. P. Paillou, M. Crapeau, C. Elachi, S. Wall, P. Encrenaz, Models of SAR backscattering for bright flows and dark spots on Titan. J. Geophys. Res. 111, E11011 (2006).  https://doi.org/10.1029/2006JE002724 ADSCrossRefGoogle Scholar
  164. P. Paillou, J.I. Lunine, G. Ruffié, P. Encrenaz, S.D. Wall, R.D. Lorenz, M.A. Janssen, Microwave dielectric constant of Titan-relevant materials. Geophys. Res. Lett. 35, L18202 (2008) ADSGoogle Scholar
  165. P. Paillou, D. Bernard, J. Radebaugh, R. Lorenz, A. Le Gall, T. Farr, Modeling the SAR backscatter of linear dunes on Earth and Titan. Icarus 230, 208–214 (2014) ADSGoogle Scholar
  166. P. Paillou, B. Seignovert, J. Radebaugh, S. Wall, Radar scattering of linear dunes and mega-yardangs: application to Titan. Icarus 270, 211–221 (2016) ADSGoogle Scholar
  167. J.T. Perron, M.P. Lamb, C.D. Koven, I.Y. Fung, E. Yager, M. Adamkovics, Valley formation and methane precipitation rates on Titan. J. Geophys. Res. 111, E11001 (2006) ADSGoogle Scholar
  168. V. Poggiali, M. Mastrogiuseppe, A.G. Hayes, R. Seu, S.P.D. Birch, R. Lorenz, C. Grima, J.D. Hofgartner, Liquid-filled canyons on Titan. Geophys. Res. Lett. 43, 7887–7894 (2016) ADSGoogle Scholar
  169. C.C. Porco, R.A. West, S. Squyres, A. McEwen, T. Peter, C.D. Murray, A. Delgenio, A.P. Ingersoll, T.V. Johnson, G. Neukum et al., Cassini imaging science: instrument characteristics and anticipated scientific investigations at Saturn. Space Sci. Rev. 115(1–4), 363–497 (2004).  https://doi.org/10.1007/s11214-004-1456-7 ADSCrossRefGoogle Scholar
  170. C.C. Porco, E. Baker, J. Barbara, K. Beurle, A. Brahic, J.A. Burns, S. Charnoz, N. Cooper, D.D. Dawson, A.D. Del Genio, T. Denk, L. Dones, U. Dyudina, M.W. Evans, S. Fussner, B. Giese, K. Grazier, P. Helfenstein, A.P. Ingersoll, R.A. Jacobson, T.V. Johnson, A. McEwen, C.D. Murray, G. Neukum, W.M. Owen, J. Perry, T. Roatsch, J. Spitale, S. Squyres, P. Thomas, M. Tiscareno, E.P. Turtle, A.R. Vasavada, J. Veverka, R. Wagner, R. West, Imaging of Titan from the Cassini spacecraft. Nature 434, 159–168 (2005).  https://doi.org/10.1038/nature03436 ADSCrossRefGoogle Scholar
  171. J. Radebaugh, Dunes on Saturn’s moon Titan at the end of the Cassini Equinox Mission. Aeolian Res. 11, 23–41 (2013) ADSGoogle Scholar
  172. J. Radebaugh, R.D. Lorenz, R.L. Kirk, J.I. Lunine, E.R. Stofan, R.M.C. Lopes, S.D. Wall (the Cassini Radar Team), Mountains on Titan observed by Cassini Radar. Icarus 192, 77–91 (2007).  https://doi.org/10.1016/j.icarus.2007.06.020 ADSCrossRefGoogle Scholar
  173. J. Radebaugh, R. Lorenz, J. Lunine, S. Wall, G. Boubin, E. Reffet, R. Kirk, R. Lopes, E. Stofan, L. Soderblom, M. Allison, M. Janssen, P. Paillou, P. Callahan (the Cassini Radar Team), Dunes on Titan observed by Cassini Radar. Icarus 194, 690–703 (2008).  https://doi.org/10.1016/j.icarus.2007.10.015 ADSCrossRefGoogle Scholar
  174. J. Radebaugh, R. Lorenz, T. Farr, P. Paillou, C. Savage, C. Spencer, Linear dunes on Titan and Earth: initial remote sensing comparisons. Geomorphology 121, 122–132 (2010).  https://doi.org/10.1016/j.geomorph.2009.02.022 ADSCrossRefGoogle Scholar
  175. J. Radebaugh, R.D. Lorenz, S.D. Wall, R.L. Kirk, C.A. Wood, J.I. Lunine, E.R. Stofan, R.M.C. Lopes, P. Valora, T.G. Farr, A.G. Hayes, B. Stiles, G. Mitri, H. Zebker, M. Janssen, L. Wye, A. Le Gall, K.L. Mitchell, F. Paganelli, R.D. West, E.L. Schaller (the Cassini RADAR Team), Regional geomorphology and history of Titan’s Xanadu province. Icarus 211, 672–685 (2011) ADSGoogle Scholar
  176. J. Radebaugh, D. Ventra, R.D. Lorenz, T. Farr, R. Kirk, A. Hayes, M.J. Malaska, S. Birch, Z.Y-C. Liu, J. Lunine, J. Barnes, A. Le Gall, R. Lopes, E. Stofan, S. Wall, P. Paillou, Alluvial and fluvial fans on Saturn’s moon Titan reveal processes, materials and regional geology, in Geology and Geomorphology of Alluvial and Fluvial Fans: Terrestrial and Planetary Perspectives, ed. by D. Ventra, L.E. Clarke. Special Publications, vol. 440 (Geological Society, London, 2016).  https://doi.org/10.1144/SP440.6 CrossRefGoogle Scholar
  177. P. Rannou, F. Montmessin, F. Hourdin, S. Lebonnois, The latitudinal distribution of clouds on Titan. Science 311(5758), 201–205 (2006) ADSGoogle Scholar
  178. F. Raulin, Organic chemistry in the oceans of Titan. Adv. Space Res. 7(5), (5)71–(5)81 (1987) ADSGoogle Scholar
  179. L.A. Richardson, J.W. Hartwig, J.W. Leachman, Experimental P\(\rho\)T-x measurements of liquid methane-ethane-nitrogen mixtures. Fluid Phase Equilib. 462, 38–43 (2018).  https://doi.org/10.1016/j.fluid.2018.01.023 CrossRefGoogle Scholar
  180. S. Rodriguez, A. Garcia, A. Lucas, T. Appéré, A. Le Gall, E. Reffet, L. Le Corre, S. Le Mouélic, T. Cornet, S. Courrech du Pont, C. Narteau, O. Bourgeois, J. Radebaugh, K. Arnold, J.W. Barnes, K. Stephan, R. Jaumann, C. Sotin, R.H. Brown, R.D. Lorenz, E.P. Turtle, Global mapping and characterization of Titan’s dune fields with Cassini: correlation between RADAR and VIMS observations. Icarus 230, 168–179 (2014) ADSGoogle Scholar
  181. D.M. Rubin, P.A. Hesp, Multiple origins of linear dunes on Earth and Titan. Nat. Geosci. 2(9), 653 (2009) ADSGoogle Scholar
  182. C. Sagan, S.F. Dermott, The tide in the seas of Titan. Nature 300, 731–733 (1982) ADSGoogle Scholar
  183. C.J. Savage, J. Radebaugh, E.H. Christiansen, R.D. Lorenz, Implications of dune pattern analysis for Titan’s surface history. Icarus 230, 180–190 (2014) ADSGoogle Scholar
  184. E.L. Schaller, M.E. Brown, H.G. Roe, A.H. Bouchez, A large cloud outburst at Titan’s south pole. Icarus 182(1), 224–229 (2006) ADSGoogle Scholar
  185. L.R. Schurmeier, A.J. Dombard, Crater relaxation on Titan aided by low thermal conductivity sand infill. Icarus 305, 314–323 (2018).  https://doi.org/10.1016/j.icarus.2017.10.034 ADSCrossRefGoogle Scholar
  186. L. Schurmeier, A.J. Dombard, M. Malaska, J. Radebaugh, Are Titan’s radial labyrinth terrains surface expressions of large laccoliths? in American Geophysical Union Fall Meeting, New Orleans (2017) Google Scholar
  187. L. Schurmeier, A.J. Dombard, J. Radebaugh, M. Malaska, Intrusive and extrusive cryovolcanism and the composition of Titan’s icy crust, in Lunar and Planetary Science Conference, vol. 49 (2018). Abstract 2934 Google Scholar
  188. W.D. Sears, Tidal dissipation in oceans on Titan. Icarus 113, 39–56 (1995) ADSGoogle Scholar
  189. P.H. Smith, M.T. Lemmon, R.D. Lorenz, L.A. Sromovsky, J.J. Caldwell, M.D. Allison, Titan’s surface, revealed by HST imaging. Icarus 119(2), 336–349 (1996) ADSGoogle Scholar
  190. L. Soderblom, J. Anderson, K. Baines, J. Barnes, J. Barrett, R. Brown, B. Buratti, R. Clark, D. Cruikshank, C. Elachi, M. Janssen, R. Jaumann, R. Kirk, E. Karkoschka, S. Lemouelic, R. Lopes, R. Lorenz, J. Lunine, T. McCord, P. Nicholson, J. Radebaugh, B. Rizk, C. Sotin, E. Stofan, T. Sucharski, M. Tomasko, S. Wall, Correlations between Cassini VIMS spectra and RADAR SAR images: implications for Titan’s surface composition and the character of the Huygens Probe landing site. Planet. Space Sci. 55, 2025–2036 (2007) ADSGoogle Scholar
  191. L.A. Soderblom, R.H. Brown, J.M. Soderblom, J.W. Barnes, R.L. Kirk, C. Sotin, R. Jaumann, D.J. MacKinnon, D.W. Mackowski, K.H. Baines, B.J. Buratti, R.N. Clark, P.D. Nicholson, The geology of Hotei Regio, Titan: correlation of Cassini VIMS and RADAR. Icarus 204, 610–618 (2009).  https://doi.org/10.1016/j.icarus.2009.07.033 ADSCrossRefGoogle Scholar
  192. J.M. Soderblom, R.H. Brown, L.A. Soderblom, J.W. Barnes, R. Jaumann, S. Le Mouélic et al., Geology of the Selk crater region on Titan from Cassini VIMS observations. Icarus 208, 905–912 (2010) ADSGoogle Scholar
  193. J.M. Soderblom, J.W. Barnes, R.H. Brown, V. Chevrier, K. Farnsworth, L.A. Soderblom, Evidence for frozen hydrocarbons on Titan, in American Astronomical Society, DPS Meeting, vol. 48 (2016) Google Scholar
  194. F. Sohl, H. Hussmann, B. Schwentker, T. Spohn, R.D. Lorenz, Interior structure models and tidal Love numbers of Titan. J. Geophys. Res. 108(E12), 5130 (2003).  https://doi.org/10.1029/2003JE002044 CrossRefGoogle Scholar
  195. F. Sohl, A. Solomonidou, F.W. Wagner, A. Coustenis, H. Hussmann, D. Schulze-Makuch, Tidal stresses on Titan and implications for its geology and habitability. J. Geophys. Res. 119, 1013–1036 (2014) Google Scholar
  196. A. Solomonidou et al., Surface albedo spectral properties of geologically interesting areas on Titan. J. Geophys. Res. 119, 1729–1747 (2014) Google Scholar
  197. A. Solomonidou, A. Coustenis, M. Hirtzig, S. Rodriguez, K. Stephan, R.M.C. Lopes, P. Drossart, C. Sotin, S. Le Mouélic, K. Lawrence, E. Bratsolis, R. Jaumann, R.H. Brown, Temporal variations of Titan’s surface with Cassini/VIMS. Icarus 270, 85–99 (2016) ADSGoogle Scholar
  198. A. Solomonidou, A. Coustenis, R.M.C. Lopes, M. Malaska, S. Rodriguez, P. Drossart, C. Elachi, B. Schmitt, S. Philippe, M. Janssen, M. Hirtzig, S. Wall, C. Sotin, K. Lawrence, N. Altobelli, E. Bratsolis, J. Radebaugh, K. Stephan, R.H. Brown, S. Le Mouélic, A. Le Gall, E.V. Villanueva, J.F. Brossier, A.A. Bloom, O. Witasse, C. Matsoukas, A. Schoenfeld, The spectral nature of Titan’s major geomorphological units: constraints on surface composition. J. Geophys. Res., Planets (2018).  https://doi.org/10.1002/2017JE005477 CrossRefGoogle Scholar
  199. C. Sotin, R. Jaunmann, B.J. Buratti, R.H. Brown, R.N. Clark, L.A. Soderblom, K.H. Baines, G. Bellucci, J-P. Bribing, F. Capaccioni, P. Cerroni, A. Coradini, D.P. Cruikshank, P. Drossart, V. Formisano, Y. Langevin, D.L. Matson, T.B. McCord, R.M. Nelson, P.D. Nicholson, B. Sicardy, S. LeMouelic, S. Rodriguez, K. Stephan, C.K. Scholz, Release of volatiles from a possible cryovolcano from near-infrared imaging of Titan. Nature 435, 786–789 (2005) ADSGoogle Scholar
  200. K. Stephan et al., Specular reflection on Titan: liquids in Kraken Mare. Geophys. Res. Lett. 37, L07104 (2010).  https://doi.org/10.1029/2009GL042312 ADSCrossRefGoogle Scholar
  201. B.W. Stiles, R.L. Kirk, R.D. Lorenz, S. Hensley, E. Lee, S.J. Ostro, M.D. Allison, P.S. Callahan, Y. Gim, L. Iess, Determining Titan’s spin state from Cassini radar images. Astron. J. 135(5), 1669–1680 (2008) ADSGoogle Scholar
  202. B.W. Stiles, S. Hensley, Y. Gim, D.M. Bates, R.L. Kirk, A. Hayes, J. Radebaugh, R.D. Lorenz, K.L. Mitchell, P.S. Callahan, H. Zebker, W.T.K. Johnson, S.D. Wall, J.I. Lunine, C.A. Wood, M. Janssen, F. Pelletier, R.D. West, C. Veeramacheneni, Determining Titan surface topography from Cassini SAR data. Icarus 102, 584–598 (2009).  https://doi.org/10.1016/j.icarus.2009.03.032 ADSCrossRefGoogle Scholar
  203. B. Stiles, R. Kirk, R. Lorenz, S. Hensley, E. Lee, S. Ostro, M. Allison, P. Callahan, Y. Gim, L. Iess, P. Perci del Marmo, G. Hamilton, W. Johnson, R. West (Cassini RADAR Team), Determining Titan’s spin state from Cassini Radar images. Astron. J. 139(1), 311 (2010) ADSGoogle Scholar
  204. E.R. Stofan, J.I. Lunine, R. Lopes, F. Paganelli, R.D. Lorenz, C.A. Wood, R. Kirk, S. Wall, C. Elachi, L.A. Soderblom, S. Ostro, M. Janssen, J. Radebaugh, L. Wye, H. Zebker, Y. Anderson, M. Allison, R. Boehmer, P. Callahan, P. Encrenaz, E. Flamini, G. Francescetti, Y. Gim, G. Hamilton, S. Hensley, W.T.K. Johnson, K. Kelleher, D. Muhleman, G. Picardi, F. Posa, L. Roth, R. Seu, S. Shaffer, B. Stiles, S. Vetrella, R. West, Mapping of Titan: results from the first Titan Radar passes. Icarus 185, 443–456 (2006) ADSGoogle Scholar
  205. E.R. Stofan, C. Elachi, J.I. Lunine, R.D. Lorenz, B. Stiles, K.L. Mitchell, S. Ostro, L. Soderblom, C. Wood, H. Zebker, S. Wall, M. Janssen, R. Kirk, R. Lopes, F. Paganelli, J. Radebaugh, L. Wye, Y. Anderson, M. Allison, R. Boehmer, P. Callahan, P. Encrenaz, E. Flamini, G. Francescetti, Y. Gim, G. Hamilton, S. Hensley, W.T.K. Johnson, K. Kelleher, D. Muhleman, P. Paillou, G. Picardi, F. Posa, L. Roth, R. Seu, S. Shaffer, S. Vetrella, R. West, The lakes of Titan. Nature 445, 61–64 (2007).  https://doi.org/10.1038/nature05438 ADSCrossRefGoogle Scholar
  206. G. Tobie, J.I. Lunine, C. Sotin, Episodic outgassing as the origin of atmospheric methane on Titan. Nature 440, 61–64 (2006) ADSGoogle Scholar
  207. G. Tobie, J.I. Lunine, J. Monteux, O. Mousis, F. Nimmo, The origin and evolution of Titan, in Titan: Interior, Surface, Atmosphere, and Space Environment, ed. by I. Müller-Wodarg, C.A. Griffith, E. Lellouch, T.E. Cravens (Cambridge University Press, Cambridge, 2014).  https://doi.org/10.1017/CBO9780511667398 CrossRefGoogle Scholar
  208. T. Tokano, Meteorological assessment of the surface temperatures on Titan: constraints on the surface type. Icarus 173, 222–242 (2005) ADSGoogle Scholar
  209. T. Tokano, Dune-forming winds on Titan and the influence of topography. Icarus 194(1), 243–262 (2008) ADSGoogle Scholar
  210. T. Tokano, Relevance of fast westerlies at equinox for the eastward elongation of Titan’s dunes. Aeolian Res. 2(2–3), 113–127 (2010) ADSGoogle Scholar
  211. M. Tomasko, B. Archinal, T. Becker, B. Bézard, M. Bushroe, M. Combes, D. Cook, A. Coustenis, C. de Bergh, L. Dafoe, L. Doose, S. Douté, A. Eibl, S. Engel, F. Gliem, B. Grieger, K. Holso, E. Howington-Kraus, E. Karkoschka, H. Keller, R. Kirk, R. Kramm, M. Küppers, P. Lanagan, E. Lellouch, M. Lemmon, J. Lunine, E. McFarlane, J. Moores, M. Prout, B. Rizk, M. Rosiek, P. Rueffer, S. Schröder, B. Schmitt, C. See, P. Smith, L. Soderblom, N. Thomas, R. West, Rain, winds, and haze during the Huygens probe descent to Titan’s surface. Nature 438, 765–778 (2005) ADSGoogle Scholar
  212. F. Tosi, R. Orosei, R. Seu, A. Coradini, J.I. Lunine, G. Filacchione, A.I. Gavrishin, F. Capaccioni, P. Cerroni, A. Adriani et al., Correlations between VIMS and RADAR data over the surface of Titan: implications for Titan’s surface properties. Icarus 208(1), 366–384 (2010) ADSGoogle Scholar
  213. H. Tsoar, Dynamic processes acting on a longitudinal (seif) dune. Sedimentology 30, 567–578 (1983) ADSGoogle Scholar
  214. E.P. Turtle, J.E. Perry, A.S. McEwen, A.D. Del Genio, J. Barbara, R.A. West, D.D. Dawson, C.C. Porco, Cassini imaging of Titan’s high-latitude lakes, clouds, and south-polar surface changes. Geophys. Res. Lett. 36(2), L02204 (2009) ADSGoogle Scholar
  215. E.P. Turtle, J.E. Perry, A.G. Hayes, R.D. Lorenz, J.W. Barnes, A.S. McEwen, R.A. West, A.D. Del Genio, J.M. Barbara, E.L. Schaller, T.L. Ray, J.I. Lunine, R.M.C. Lopes, E.R. Stofan, Rapid and extensive surface changes near Titan’s equator: evidence of April showers. Science 331, 1414 (2011a).  https://doi.org/10.1126/science.1201063. 2011 ADSCrossRefGoogle Scholar
  216. E.P. Turtle, J.E. Perry, A.G. Hayes, A.S. McEwen, Shoreline retreat at Titan’s Ontario Lacus and Arrakis Planitia from Cassini Imaging Science Subsystem observations. Icarus 212, 957–959 (2011b) ADSGoogle Scholar
  217. B. Ventura et al., Electromagnetic models and inversion techniques for Titan’s Ontario Lacus depth estimation from Cassini RADAR data. Icarus 221, 960–969 (2012).  https://doi.org/10.1016/j.icarus.2012.09.011 ADSCrossRefGoogle Scholar
  218. G. Vixie, J.W. Barnes, B. Jackson, S. Rodriguez, S. Le Mouélic, C. Sotin, S. MacKenzie, P. Wilson, Possible temperate lakes on Titan. Icarus 257, 313–323 (2015) ADSGoogle Scholar
  219. S.D. Wall, R.M. Lopes, E.R. Stofan, C.A. Wood, J.L. Radebaugh, B.W. Stiles, R.M. Nelson, L.W. Kamp, M.A. Janssen, R.L. Lorenz, J.I. Lunine, T.G. Farr, G. Mitri, P. Paillou, F. Paganelli, K.L. Mitchell, Cassini RADAR images at Hotei Arcus and Western Xanadu, Titan: evidence for recent cryovolcanic activity. Geophys. Res. Lett. 36, L04203 (2009).  https://doi.org/10.1029/2008GL036415 ADSCrossRefGoogle Scholar
  220. S. Wall, A. Hayes, C. Bristow, R. Lorenz, E. Stofan, J. Lunine, A. Le Gall, M. Janssen, R. Lopes, L. Wye, L. Soderblom, P. Paillou, O. Aharonson, H. Zebker, T. Farr, G. Mitri, R. Kirk, K. Mitchell, C. Notarnicola, D. Casarano, B. Ventura, Active shoreline of Ontario Lacus, Titan: a morphological study of the lake and its surroundings. Geophys. Res. Lett. 37, L05202 (2010).  https://doi.org/10.1029/2009GL041821 ADSCrossRefGoogle Scholar
  221. H.Y. Wei, C.T. Russell, M.K. Dougherty, F.M. Neubauer, Y.J. Ma, Upper limits on Titan’s magnetic moment and implications for its interior. J. Geophys. Res. 115, E10007 (2010) ADSGoogle Scholar
  222. C.A. Wood, Titan’s great crustal thickening event and recent geologic history, in LPSC, vol. 49 (2018) p. 1343 Google Scholar
  223. C.A. Wood, K.L. Mitchell, R.M.C. Lopes, J. Radebaugh, E. Stoffan, J. Lunine (the Cassini RADAR Team), Volcanic Calderas in the North Polar Region of Titan, in Lunar Planet. Sci. Conf. XXXVIII, Houston, Texas (2007). Abstract 1454 Google Scholar
  224. C.A. Wood, R. Lorenz, R. Kirk, R. Lopes, K. Mitchell, E. Stofan, Impact craters on Titan. Icarus 206, 334–344 (2010) ADSGoogle Scholar
  225. L.C. Wye, Radar Scatering from Titan and Saturn’s Icy Satellites using the Cassini Spacecraft. Ph.D. thesis, Stanford University (2011) Google Scholar
  226. L.C. Wye, H.A. Zebker, S.J. Ostro, R.D. West, Y. Gim, R.D. Lorenz (the Cassini Radar Team), Electrical properties of Titan’s surface from Cassini RADAR scatterometer measurements. Icarus 188, 367–385 (2007) ADSGoogle Scholar
  227. L.C. Wye, H.A. Zebker, R.D. Lorenz, Smoothness of Titan’s Ontario Lacus: constraints from Cassini RADAR specular reflection data. Geophys. Res. Lett. 36, 16201 (2009).  https://doi.org/10.1029/2009GL039588 ADSCrossRefGoogle Scholar
  228. X. Yu, S.M. Hörst, C. He, N.T. Bridges, D.M. Burr, J.A. Sebree, J.K. Smith, The effect of adsorbed liquid and material density on saltation threshold: insight from laboratory and wind tunnel experiments. Icarus 297, 97–109 (2017) ADSGoogle Scholar
  229. Y.L. Yung, M. Allen, J.P. Pinto, Photochemistry of the atmosphere of Titan: comparison between model and observations. Astrophys. J. Suppl. Ser. 55, 465–506 (1984) ADSGoogle Scholar
  230. K. Zahnle, P. Schenk, H. Levison, L. Dones, Cratering rates in the outer Solar System. Icarus 163, 263–289 (2003) ADSGoogle Scholar
  231. K. Zebker, Y-Q. Wong, Shape of Titan from Cassini radar elevation measurements and implications for interior structure and composition, in AGU Fall Meeting, Dec. 12–16, San Francisco (2016). Abstract P33F-01 Google Scholar
  232. H. Zebker, L. Wye, M. Janssen (Cassini Radar Team), Titan’s surface from reconciled Cassini microwave reflectivity and emissivity observations. Icarus 194(2), 704–710 (2008) ADSGoogle Scholar
  233. H.A. Zebker, B. Stiles, S. Hensley, R. Lorenz, R.L. Kirk, J.I. Lunine, Size and shape of Saturn’s moon Titan. Science 324, 921–923 (2009) ADSGoogle Scholar
  234. H. Zebker, A. Hayes, M. Janssen, A. Le Gall, R. Lorenz, L. Wye, Surface of Ligeia Mare, Titan, from Cassini altimeter and radiometer analysis. Geophys. Res. Lett. 41, 308–313 (2014).  https://doi.org/10.1002/2013GL058877 ADSCrossRefGoogle Scholar

Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • R. M. C. Lopes
    • 1
  • S. D. Wall
    • 1
  • C. Elachi
    • 2
  • S. P. D. Birch
    • 3
  • P. Corlies
    • 3
  • A. Coustenis
    • 4
  • A. G. Hayes
    • 3
  • J. D. Hofgartner
    • 1
  • M. A. Janssen
    • 1
  • R. L. Kirk
    • 5
  • A. LeGall
    • 6
  • R. D. Lorenz
    • 7
  • J. I. Lunine
    • 2
    • 3
  • M. J. Malaska
    • 1
  • M. Mastroguiseppe
    • 8
  • G. Mitri
    • 9
  • C. D. Neish
    • 10
  • C. Notarnicola
    • 11
  • F. Paganelli
    • 12
  • P. Paillou
    • 13
  • V. Poggiali
    • 3
  • J. Radebaugh
    • 14
  • S. Rodriguez
    • 15
  • A. Schoenfeld
    • 16
  • J. M. Soderblom
    • 17
  • A. Solomonidou
    • 18
  • E. R. Stofan
    • 19
  • B. W. Stiles
    • 1
  • F. Tosi
    • 20
  • E. P. Turtle
    • 7
  • R. D. West
    • 1
  • C. A. Wood
    • 21
  • H. A. Zebker
    • 22
  • J. W. Barnes
    • 23
  • D. Casarano
    • 24
  • P. Encrenaz
    • 4
  • T. Farr
    • 1
  • C. Grima
    • 25
  • D. Hemingway
    • 26
  • O. Karatekin
    • 27
  • A. Lucas
    • 28
  • K. L. Mitchell
    • 1
  • G. Ori
    • 9
  • R. Orosei
    • 29
  • P. Ries
    • 1
  • D. Riccio
    • 30
  • L. A. Soderblom
    • 5
  • Z. Zhang
    • 2
  1. 1.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA
  2. 2.Division of Geological and Planetary SciencesCalifornia Institute of TechnologyPasadenaUSA
  3. 3.Department of AstronomyCornell UniversityIthacaUSA
  4. 4.LESIA – Observatoire de Paris, CNRS, UPMC Univ. Paris 06Univ. Paris-DiderotMeudonFrance
  5. 5.Astrogeology Science CenterU.S. Geological SurveyFlagstaffUSA
  6. 6.Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS)Universite Versaills Saint QuentinGuyancourtFrance
  7. 7.JHU Applied Physics LabLaurelUSA
  8. 8.University of Rome “La Sapienza”RomeItaly
  9. 9.International Research School of Planetary SciencesUniversità d’AnnunzioPescaraItaly
  10. 10.Department of Earth Sciencesthe University of Western OntarioN. LondonCanada
  11. 11.Eurac ResearchInstitute for Earth ObservationBolzanoItaly
  12. 12.SETI InstituteMountain ViewUSA
  13. 13.UMR 5804 LAB, Batiment B18NUniversity of BordeauxPessac CedexFrance
  14. 14.Department of Geological SciencesBrigham Young UniversityProvoUSA
  15. 15.Institut de Physique du Globe de Paris (IPGP), CNRS-UMR 7154Université Paris-Diderot, USPCParisFrance
  16. 16.UCLA Department of Earth, Planetary, and Space SciencesLos AngelesUSA
  17. 17.Department of Earth, Atmospheric and Planetary SciencesMassachusetts Institute of TechnologyBostonUSA
  18. 18.European Space Agency (ESA)ESACMadridSpain
  19. 19.Smithsonian National Air and Space MuseumWashington DCUSA
  20. 20.INAF – IAPS National Institute for AstrophysicsRomeItaly
  21. 21.Planetary Science InstituteTucsonUSA
  22. 22.Department of Electrical EngineeringStanford UniversityStanfordUSA
  23. 23.Department of PhysicsUniversity of IdahoMoscowUSA
  24. 24.CNR IRPIBariItaly
  25. 25.Institute of GeophysicsUniversity of Texas at AustinAustinUSA
  26. 26.Miller Institute for Basic Research in Science, Department of Earth & Planetary ScienceUniversity of California BerkeleyBerkeleyUSA
  27. 27.Royal Observatory of BelgiumBrusselsBelgium
  28. 28.Institut de Physique du Globe de ParisCNRSParisFrance
  29. 29.Istituto di RadioastronomiaIstituto Nazionale di AstrofisicaBolognaItaly
  30. 30.Dept. Electrical Engineering ad Information TechnologyUniversity of Napoli Federico IINapoliItaly

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