Advertisement

Acta Geophysica

, Volume 62, Issue 4, pp 762–784 | Cite as

Geophysical researches (gravity and magnetic) of the Eratosthenes Seamount in the eastern Mediterranean Sea

  • Ezgi ErbekEmail author
  • M. Nuri Dolmaz
Research Article

Abstract

New free-air gravity and magnetic maps of the Eratosthenes Seamount and its vicinity were regenerated from potential field data. Stages of data processing are power spectrum, upward continuation, filtering on the free-air gravity anomaly data. RTP, pseudo-gravity transformation map, power spectrum, upward continuation, filtering, AS, and HGAS were applied on the magnetic data. A HGAS map shows the images and locations of the Eratosthenes magnetic body. Spectral analysis of the gravity and magnetic anomalies indicates that there is an elliptical elongated structure of the Eratosthenes Seamount in the width of approx. 86 km NW-SE orientation and in the length of 138 km NE-SW orientation, with a strike of N40°E and inclined to NW. It is considered that 22.49 ± 0.08 km obtained from power spectrum of the gravity data may be related to the crust thickness. Also, 15.67 ± 0.02 km obtained from power spectrum of the magnetic data is considered to be related to the magmatic basement of the Eratosthenes Seamount.

Key words

Eratosthenes East Mediterranean gravity and magnetic methods 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Ansari, A.H., and K. Alamdar (2009), Reduction to the pole of magnetic anomalies using analytic signal, World Appl. Sci. J. 7,4, 405–409.Google Scholar
  2. Baranov, V. (1957), A new method for interpretation of aeromagnetic maps: pseudo-gravimetric anomalies, Geophysics 22,2, 359–382, DOI: 10.1190/1.1438369.CrossRefGoogle Scholar
  3. Ben-Avraham, Z., and A. Nur (1986), Collisional processes in the eastern Mediterranean, Geol. Rundsch. 75,1, 209–217, DOI: 10.1007/BF01770189.CrossRefGoogle Scholar
  4. Ben-Avraham, Z., Y. Shoham, and A. Ginzburg (1976), Magnetic anomalies in the Eastern Mediterranean and the tectonic setting of the Eratosthenes Seamount, Geophys. J. Roy. Astron. Soc. 45,1, 105–123, DOI: 10.1111/j.1365-246X.1976.tb00316.x.CrossRefGoogle Scholar
  5. Ben-Avraham, Z., A. Ginzburg, J. Makris, and L. Eppelbaum (2002), Crustal structure of the Levant Basin, eastern Mediterranean, Tectonophysics 346,1–2, 23–43, DOI: 10.1016/S0040-1951(01)00226-8.CrossRefGoogle Scholar
  6. Blakely, R.J. (1995), Potential Theory in Gravity and Magnetic Applications, Cambridge University Press, New York, DOI: 10.1017/CBO9780511549816.CrossRefGoogle Scholar
  7. Bournas, N., and H.A. Baker (2001), Interpretation of magnetic anomalies using the horizontal gradient analytic signal, Ann. Geophys. 44,3, 505–526, DOI: 10.4401/ag-3572.Google Scholar
  8. Coleman, R.G. (1977), Ophiolites: Ancient Oceanic Lithosphere?, Springer, New York, 229 pp.CrossRefGoogle Scholar
  9. Dolmaz, M.N. (2007), An aspect of the subsurface structure of the Burdur-Isparta area, SW Anatolia, based on gravity and aeromagnetic data, and some tectonic implications, Earth Planets Space 59,1, 5–12.Google Scholar
  10. Emery, K.O., B.C. Heezen, and T.D. Allan (1966), Bathymetry of the eastern Mediterranean Sea, Deep-Sea Res. Ocean. Abstr. 13,2, 173–192, DOI: 10.1016/0011-7471(66)91098-9.CrossRefGoogle Scholar
  11. Erbek, E. (2012), Investigation into the geophysical (gravity and magnetic) properties of Eratosthenes Seamount, M.Sc. Thesis, Suleyman Demirel University, Graduate School of Applied and Natural Sciences, Isparta, 76 pp.Google Scholar
  12. Ergün, M., S. Okay, C. Sari, E.Z. Oral, M. Ash, J. Hall, and H. Miller (2005), Gravity anomalies of the Cyprus Arc and their tectonic implications, Mar. Geol. 221,1–4, 349–358, DOI: 10.1016/j.margeo.2005.03.004.CrossRefGoogle Scholar
  13. Galindo-Zaldivar, J., L.M. Nieto, A.H.F. Robertson, and J.M. Woodside (2001), Recent tectonics of Eratosthenes Seamount: an example of seamount deformation during incipient continental collision, Geo-Mar. Lett. 20,4, 233–242, DOI: 10.1007/s003670000059.CrossRefGoogle Scholar
  14. Gass, I.G. (1980), The Troodos massif: Its role in the unravelling of the ophiolite problem and its significance in the understanding of constructive plate margin processes. In: A. Panayiotou (ed.), Proc. Int. Ophiolite Symposium “Ophiolites”, 1979, Nicosia, Cyprus, 23–35.Google Scholar
  15. Gass, I.G., and D. Masson-Smith (1963), The geology and gravity anomalies of the Troodos massif, Cyprus, Philos. Trans. Roy. Soc. London A 255,1060, 417–467, DOI: 10.1098/rsta.1963.0009.CrossRefGoogle Scholar
  16. Ginzburg, A., and Z. Ben-Avraham (1987), The deep structure of the central and southern Levant continental margin, Ann. Tectonicae 1,2, 105–115.Google Scholar
  17. Ginzburg, A., and G. Gvirtzman (1979), Changes in the crust and in the sedimentary cover across the transition from the Arabian Platform to the Mediterranean Basin: Evidence from seismic refraction and sedimentary studies in Israel and in Sinai, Sediment. Geol. 23,1–4, 19–36, DOI: 10.1016/0037-0738(79)90004-6.CrossRefGoogle Scholar
  18. Kempler, D. (1994), An outline of northeastern mediterranean tectonics in view of Cruise 5 of the Akademik Nikolaj Strakhov. In: V. Krasheninnikov and J.K. Hall (eds.), Geological Structure of the Northeastern Mediterranean: Cruise 5 of the Research Vessel Akademik Nikolaj Strakhov, Historical Productions-Hall, Jerusalem, 277–293.Google Scholar
  19. Kempler, D. (1998), Eratosthenes Seamount: The possible spearhead of incipient continental collision in the eastern Mediterrenean. In: A.H.F. Robertson, K.-C. Emeis, C. Richter, and A. Camerlenghi (eds.), Proc. Ocean Drilling Program, Sci. Results, Vol. 160, 709–721.Google Scholar
  20. Kempler, D., and Z. Ben-Avraham (1987), The tectonic evolution of the Cyprean Arc, Ann. Tectonicae 1,1, 58–71.Google Scholar
  21. Knipper, A.L., and A.Y. Sharaskin (1994), Tectonic evolution of the western part of the Peri-Arabian ophiolite arc. In: V. Krasheninnikov and J.K. Hall (eds.), Geological Structure of the Northeastern Mediterranean: Cruise 5 of the Research Vessel Akademik Nikolaj Strakhov, Historical Productions-Hall, Jerusalem, 295–305.Google Scholar
  22. Lort, J.M. (1973), Summary of seismic studies in the eastern Mediterranean, Geol. Soc. Greece Bull. 10,1, 99–108.Google Scholar
  23. Lort, J.M., W.Q. Limond, and F. Gray (1974), Preliminary seismic studies in the eastern Mediterranean, Earth Planet. Sci. Lett. 21,4, 355–366, DOI: 10.1016/0012-821X(74)90174-5.CrossRefGoogle Scholar
  24. MacLeod, I.N., K. Jones, and T.F. Dai (1993), 3-D analytic signal in the interpretation of total magnetic field data at low magnetic latitudes, Explor. Geophys. 24,4, 679–688, DOI: 10.1071/EG993679.CrossRefGoogle Scholar
  25. Makris, J., and J. Wang (1994), Bouguer gravity anomalies of the Eastern Mediterranean Sea. In: V.A. Krasheninnikov and J.K. Hall (eds.), Geological Structure of the Northeastern Mediterranean. Cruise 5 of the Research Vessel Akademik Nikolaj Strakhov, Historical Productions-Hall, Jerusalem, 87–98.Google Scholar
  26. Makris, J., and J. Wang (1995), Geophysical study and geodynamics of the eastern Mediterranean Sea, Aktenzeichen Ma 719/48-1, Universitat Hamburg, Institut für Geophysik, 135 pp.Google Scholar
  27. Makris, J., Z. Ben-Avraham, A. Behle, A. Ginzburg, P. Giesse, L. Steinmetz, R.B. Whitmarsh, and S. Eleftheriou (1983), Seismic refraction profiles between Cyprus and Israel and their interpretation, Geophys. J. Roy. Astron. Soc. 75,3, 575–591, DOI: 10.1111/j.1365-246X.1983.tb05000.x.CrossRefGoogle Scholar
  28. Neev, D., G. Almagor, A. Arad, A. Ginzburg, and J.K. Hall (1973), The geology of the southeastern Mediterranean Sea, Israel Geol. Surv. Rep., MG/73/5, 43 pp.Google Scholar
  29. Pratt, D.A., and Z. Shi (2004), An improved pseudo-gravity magnetic transform technique for investigation of deep magnetic source rocks, ASEG Extended Abstracts 2004,1, 1–4, DOI: 10.1071/ASEG2004ab116.CrossRefGoogle Scholar
  30. Robertson, A.H.F. (1990), Tectonic evolution of Cyprus. In: J. Malpas, E.M. Moores, A. Panayiotou, and C. Xenophontos (eds.), Proc. Symp. “Ophiolites, Oceanic Crustal Analogues”? Troodos 1987, Geological Survey Department, Nicosia, Cyprus, 235–252.Google Scholar
  31. Robertson, A.H.F. (1998), Mesozoic-Tertiary tectonic evolution of the easternmost Mediterranean area: integration of marine and land evidence. In: A.H.F. Robertson, K.C. Emeis, C. Richter, and A. Camerlenghi (eds.), Proc. Ocean Drilling Program, Scientific Results 160, 723–782.Google Scholar
  32. Robertson, A.H.F., and N.H. Woodcock (1980), Tectonic setting of the Troodos massif in the east Mediterranean. In: A. Panayiotou (ed.), Proc. Int. Ophiolite Symposium “Ophiolites”, 1979, Nicosia, Cyprus, Geological Survey Department, Cyprus, 36–49.Google Scholar
  33. Roest, W.R., J. Verhoef, and M. Pilkington (1992), Magnetic interpretation using the 3-D analytic signal, Geophysics 57,1, 116–125, DOI: 10.1190/1.1443174.CrossRefGoogle Scholar
  34. Rotstein, Y., and Z. Ben-Avraham (1985), Accretionary processes at subduction zones in the eastern Mediterranean, Tectonophysics 112,1–4, 551–561, DOI: 10.1016/0040-1951(85)90195-7.CrossRefGoogle Scholar
  35. Rybakov, M., V. Goldshmidt, and Y. Rotstein (1997), New regional gravity and magnetic maps of the Levant, Geophys. Res. Lett. 24,1, 33–36, DOI: 10.1029/96GL03617.CrossRefGoogle Scholar
  36. Rybakov, M., M. Gardosh, and Z. Ben-Avraham (2005), New look at the region of Eratosthenes Seamount as revealed by gravity and magnetic data. In: J.K. Hall, V.A. Krasheninnikov, F. Hirsch, C. Benjamini, and A. Flexer (eds.), Geological Framework of the Levant. Vol. 2: The Levantine Basin and Israel, Historical Productions-Hall, Jerusalem, 687–699.Google Scholar
  37. Rybakov, M., V. Voznesensky, Z. Ben-Avraham, and M. Lazar (2008), The Niklas anomaly southwest of Cyprus: New insights from combined gravity and magnetic data, Isr. J. Earth Sci. 57,2, 125–138, DOI: 10.1560/IJES.57.2.125.CrossRefGoogle Scholar
  38. Sage, L., and J. Letouzey (1990), Convergence of the African and Eurasian Plates in the eastern Mediterranean. In: J. Letouzey (ed.), Petroleum and Tectonics in Mobile Belts, Editions Technip, Paris, 49–68.Google Scholar
  39. Searle, D.L., and A. Panayiotou (1980), Structural implications in the evolution of the Troodos massif, Cyprus. In: A. Panayiotou (ed.), Proc. Int. Ophiolite Symposium “Ophiolites”, 1979, Nicosia, Cyprus, Geological Survey Department, Cyprus, 50–60.Google Scholar
  40. Spector, A., and F.S. Grant (1970), Statistical models for interpreting aeromagnetic data, Geophysics 35,2, 293–302, DOI: 10.1190/1.1440092.CrossRefGoogle Scholar
  41. Woodside, J.M., and S.A. Williams (1977), Geophysical data report of the Eastern Mediterranean Sea: RRS Shackleteon cruises 3/72, 5/72, and 1/74, Report of Department of Geodesy and Geophysics, Cambridge University, England.Google Scholar
  42. Ziets, I., and R.G. Henderson (1956), A preliminary report on model studies of magnetic anomalies of three-dimensional bodies, Geophysics 21,3, 794–814, DOI: 10.1190/1.1438277.CrossRefGoogle Scholar
  43. Zverev, S.M., and D.A. Ilinsky (2000), Deep structure and inferred origin of the Eratosthenes Seamount (eastern Mediterranean), Geotectonics 34,4, 315.Google Scholar

Copyright information

© Versita Warsaw and Springer-Verlag Wien 2013

Authors and Affiliations

  1. 1.Department of Geophysical EngineeringSuleyman Demirel UniversityIspartaTurkey

Personalised recommendations