An experimental investigation into Martian gully formation: a slush-flow model
To understand the potential applicability of the process of 'slush flow' (a sediment-carrying flow with water and ice) to gullies on Mars, we undertook a series of flume experiments at Earth surface temperatures and pressures, which we subsequently scaled for Mars. Experiments were conduct...
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ftdatacite:10.6084/m9.figshare.c.3930613.v1 2023-05-15T15:05:57+02:00 An experimental investigation into Martian gully formation: a slush-flow model Auld, Katherine S. Dixon, John C. 2017 https://dx.doi.org/10.6084/m9.figshare.c.3930613.v1 https://figshare.com/collections/An_experimental_investigation_into_Martian_gully_formation_a_slush-flow_model/3930613/1 unknown Figshare https://dx.doi.org/10.1144/sp467.2 https://dx.doi.org/10.6084/m9.figshare.c.3930613 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Geology FOS Earth and related environmental sciences Collection article 2017 ftdatacite https://doi.org/10.6084/m9.figshare.c.3930613.v1 https://doi.org/10.1144/sp467.2 https://doi.org/10.6084/m9.figshare.c.3930613 2021-11-05T12:55:41Z To understand the potential applicability of the process of 'slush flow' (a sediment-carrying flow with water and ice) to gullies on Mars, we undertook a series of flume experiments at Earth surface temperatures and pressures, which we subsequently scaled for Mars. Experiments were conducted in a 3×0.5 m hinged flume filled with medium-grain-size sand. The experiments were performed over a slope angle range of 10°–30°, corresponding to the slope range for gullies observed on Mars. A water ice mix, or 'slush', was flowed through a 19 mm-diameter silicone hose and released onto the surface at the top of the slope. A variety of morphometric parameters were measured on each form produced in the flume. The forms produced in our experiments developed the three principal morphological components of Martian gullies: alcove, channel and apron, and had a diversity of planimetric forms. The forms produced during simulations compared well to slush flows in terrestrial arctic climates, and open up the possibility that some Martian gullies may result from slush flows associated with the thawing of permafrost-active layers or surface frost under favourable thermal regimes. Article in Journal/Newspaper Arctic Ice permafrost DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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language |
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topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences Auld, Katherine S. Dixon, John C. An experimental investigation into Martian gully formation: a slush-flow model |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
To understand the potential applicability of the process of 'slush flow' (a sediment-carrying flow with water and ice) to gullies on Mars, we undertook a series of flume experiments at Earth surface temperatures and pressures, which we subsequently scaled for Mars. Experiments were conducted in a 3×0.5 m hinged flume filled with medium-grain-size sand. The experiments were performed over a slope angle range of 10°–30°, corresponding to the slope range for gullies observed on Mars. A water ice mix, or 'slush', was flowed through a 19 mm-diameter silicone hose and released onto the surface at the top of the slope. A variety of morphometric parameters were measured on each form produced in the flume. The forms produced in our experiments developed the three principal morphological components of Martian gullies: alcove, channel and apron, and had a diversity of planimetric forms. The forms produced during simulations compared well to slush flows in terrestrial arctic climates, and open up the possibility that some Martian gullies may result from slush flows associated with the thawing of permafrost-active layers or surface frost under favourable thermal regimes. |
format |
Article in Journal/Newspaper |
author |
Auld, Katherine S. Dixon, John C. |
author_facet |
Auld, Katherine S. Dixon, John C. |
author_sort |
Auld, Katherine S. |
title |
An experimental investigation into Martian gully formation: a slush-flow model |
title_short |
An experimental investigation into Martian gully formation: a slush-flow model |
title_full |
An experimental investigation into Martian gully formation: a slush-flow model |
title_fullStr |
An experimental investigation into Martian gully formation: a slush-flow model |
title_full_unstemmed |
An experimental investigation into Martian gully formation: a slush-flow model |
title_sort |
experimental investigation into martian gully formation: a slush-flow model |
publisher |
Figshare |
publishDate |
2017 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3930613.v1 https://figshare.com/collections/An_experimental_investigation_into_Martian_gully_formation_a_slush-flow_model/3930613/1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost |
genre_facet |
Arctic Ice permafrost |
op_relation |
https://dx.doi.org/10.1144/sp467.2 https://dx.doi.org/10.6084/m9.figshare.c.3930613 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3930613.v1 https://doi.org/10.1144/sp467.2 https://doi.org/10.6084/m9.figshare.c.3930613 |
_version_ |
1766337636696326144 |