Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Slope Lineae

  • Kirby Runyon
  • Lujendra Ojha
  • Henrik Hargitai
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_632


Elongate, low-albedo (dark) features with anastomosing and/or digitate flow-like morphology down-slope and often originating at the base of outcrops on Mars (McEwen et al. 2011b; Runyon et al. 2012).


 Recurring slope lineae that are observed to grow incrementally and also recur in multiple Mars years (McEwen et al. 2011c; Ojha et al. 2014).


Slope lineae is a descriptive term not implying any particular formation mechanism. Slope lineae are typically possible  recurring slope lineae.


Recent features, forming currently, under the present climate.

Studied Locations

Asimov crater (Fig. 1), Cerberus Fossae (Fig. 2); for other locations, see  recurring slope lineae.
This is a preview of subscription content, log in to check access.


  1. McEwen A, Ojha L, Dundas C, Mattson S, Byrne S, Wray J, Cull S (2011a) Transient slope lineae: evidence for summertime briny flows on Mars? 42nd Lunar Planet Sci Conf, abstract #2314, HoustonGoogle Scholar
  2. McEwen AS, Ojha L, Dundas CM, Mattson SS, Byrne S, Wray JJ, Cull SC, Murchie SL, Thomas N, Gulick VC (2011b) Seasonal flows on warm Martian slopes. Science 333:740–743CrossRefGoogle Scholar
  3. McEwen AS, Ojha L, Dundas CM, Mattson SS, Byrne S, Wray JJ, Cull SC, Murchie SL, Thomas N, Mass M (2011c) Recurring slope lineae: warm-season incremental flows in the middle southern latitudes of Mars. In: Fifth Mars polar science conference #6017Google Scholar
  4. Ojha L, McEwen A, Dundas C, Byrne S, Mattson S, Wray J, Masse M, Schaefer E (2014) HiRISE Observations of Recurring Slope Lineae (RSL) during southern summer on Mars. Icarus 231:65–376. doi:http://dx.doi.org/10.1016/j.icarus.2013.12.021CrossRefGoogle Scholar
  5. Runyon KD, Davatzes AK, Gulick VC (2012) Putative active brine flows in the Cerberus Fossae, Mars. 42rd Lunar Planet Sci Conf, abstract #2072, HoustonGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.The Johns Hopkins UniversityBaltimoreUSA
  2. 2.Lunar and Planetary LaboratoryUniversity of ArizonaTucsonUSA
  3. 3.NASA Ames Research Center/NPPMoffett FieldUSA