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Earth-like aqueous debris-flow activity on Mars at high orbital obliquity in the last million years

De Haas, T. and Hauber, Ernst and Conway, S. and Van Steijn, H. and Johnsson, Andreas and Kleinhans, M. (2015) Earth-like aqueous debris-flow activity on Mars at high orbital obliquity in the last million years. Nature Communications, 6, p. 7543. Nature Publishing Group. DOI: 10.1038/ncomms8543 ISSN 2041-1723

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Official URL: http://www.nature.com/ncomms/2015/150623/ncomms8543/full/ncomms8543.html

Abstract

Liquid water is currently extremely rare on Mars, but was more abundant during periods of high obliquity in the last few millions of years. This is testified by the widespread occurrence of mid-latitude gullies: small catchment-fan systems. However, there are no direct estimates of the amount and frequency of liquid water generation during these periods. Here we determine debris-flow size, frequency and associated water volumes in Istok crater, and show that debris flows occurred at Earth-like frequencies during high-obliquity periods in the last million years on Mars. Results further imply that local accumulations of snow/ice within gullies were much more voluminous than currently predicted; melting must have yielded centimetres of liquid water in catchments; and recent aqueous activity in some mid-latitude craters was much more frequent than previously anticipated.

Item URL in elib:https://elib.dlr.de/100484/
Document Type:Article
Title:Earth-like aqueous debris-flow activity on Mars at high orbital obliquity in the last million years
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
De Haas, T.Faculty of Geosciences, Universiteit Utrecht, Netherlands,UNSPECIFIED
Hauber, Ernsternst.hauber (at) dlr.deUNSPECIFIED
Conway, S.Dep. of Physical Sciences, The Open University, Milton Keynes, United KingdomUNSPECIFIED
Van Steijn, H.Faculty of Geosciences, Utrecht University, Utrecht, The NetherlandsUNSPECIFIED
Johnsson, AndreasDepartment of Earth Sciences, University of Gothenburg, Göteborg, SwedenUNSPECIFIED
Kleinhans, M.Faculty of Geosciences, Utrecht University, Utrecht, The NetherlandsUNSPECIFIED
Date:2015
Journal or Publication Title:Nature Communications
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI :10.1038/ncomms8543
Page Range:p. 7543
Publisher:Nature Publishing Group
ISSN:2041-1723
Status:Published
Keywords:Mars, water, climate, gullies, snow
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt MARS-EXPRESS / HRSC
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Institute of Planetary Research > Planetary Geology
Deposited By: Hauber, Ernst
Deposited On:04 Dec 2015 08:59
Last Modified:08 Mar 2018 18:35

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