Seasonality of present-day Martian dune-gully activity

Research Article| November 01, 2010 Seasonality of present-day Martian dune-gully activity Serina Diniega; Serina Diniega * 1Program in Applied Mathematics, The University of Arizona, Tucson, Arizona 85721, USA *E-mail: serina@math.arizona.edu. Search for other works by this author on: GSW Google Scholar Shane Byrne; Shane Byrne 2Lunar and Planetary Laboratory, The University of Arizona, Tucson, Arizona 85721, USA Search for other works by this author on: GSW Google Scholar Nathan T. Bridges; Nathan T. Bridges 3Applied Physics Laboratory, Johns Hopkins University, Laurel, Maryland 20723, USA Search for other works by this author on: GSW Google Scholar Colin M. Dundas; Colin M. Dundas 2Lunar and Planetary Laboratory, The University of Arizona, Tucson, Arizona 85721, USA Search for other works by this author on: GSW Google Scholar Alfred S. McEwen Alfred S. McEwen 2Lunar and Planetary Laboratory, The University of Arizona, Tucson, Arizona 85721, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Serina Diniega * 1Program in Applied Mathematics, The University of Arizona, Tucson, Arizona 85721, USA Shane Byrne 2Lunar and Planetary Laboratory, The University of Arizona, Tucson, Arizona 85721, USA Nathan T. Bridges 3Applied Physics Laboratory, Johns Hopkins University, Laurel, Maryland 20723, USA Colin M. Dundas 2Lunar and Planetary Laboratory, The University of Arizona, Tucson, Arizona 85721, USA Alfred S. McEwen 2Lunar and Planetary Laboratory, The University of Arizona, Tucson, Arizona 85721, USA *E-mail: serina@math.arizona.edu. Publisher: Geological Society of America Received: 09 Apr 2010 Revision Received: 23 Jun 2010 Accepted: 29 Jun 2010 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2010 Geological Society of America Geology (2010) 38 (11): 1047–1050. https://doi.org/10.1130/G31287.1 Article history Received: 09 Apr 2010 Revision Received: 23 Jun 2010 Accepted: 29 Jun 2010 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Serina Diniega, Shane Byrne, Nathan T. Bridges, Colin M. Dundas, Alfred S. McEwen; Seasonality of present-day Martian dune-gully activity. Geology 2010;; 38 (11): 1047–1050. doi: https://doi.org/10.1130/G31287.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Martian slope gullies are argued to be evidence for recent liquid water flow on the surface of Mars. To explain the source of water, a wide range of environmental conditions and processes has been invoked. However, a lack of information about the environmental context or timing of gully activity makes it difficult to evaluate the theories. Here, we present new observations of extensive gully modification over the past 6 Mars years within dune gullies with slope-gully morphology. Observed activity within 18 gullies in 7 dune fields constrains timing to winter, which is consistent with observed slope-gully activity. These observations show that fluvial processes are unlikely to cause present-day Martian dune-gully activity, and imply that CO2 frost accumulation may play the dominant role. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.