Non-linear flow modelling of a Martian Lobate Debris Apron
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Non-linear flow modelling of a Martian Lobate Debris Apron. / Schmidt, Louise Steffensen; Hvidberg, Christine Schøtt; Kim, Jung Rack; Karlsson, Nanna Bjørnholt.
I: Journal of Glaciology, Bind 65, Nr. 254, 01.12.2019, s. 889-899.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Non-linear flow modelling of a Martian Lobate Debris Apron
AU - Schmidt, Louise Steffensen
AU - Hvidberg, Christine Schøtt
AU - Kim, Jung Rack
AU - Karlsson, Nanna Bjørnholt
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The Martian mid-latitudes contain numerous small water-ice deposits, collectively termed viscous flow features (VFFs). The shape and topography of the deposits contain information on their past flow history and formation process. In order to access this information, it is imperative to get information on their deformational properties. Here we use a high-resolution digital topography map and ice-penetrating radar data in combination with an inverse method to constrain the deformational properties of a lobate debris apron, a class of VFF, in the southern hemisphere of Mars. We find that while the creep parameter and accumulation rates are not well constrained in absolute values, their ratio is robust. We also find that the creep exponent is most likely n ≤ 3.
AB - The Martian mid-latitudes contain numerous small water-ice deposits, collectively termed viscous flow features (VFFs). The shape and topography of the deposits contain information on their past flow history and formation process. In order to access this information, it is imperative to get information on their deformational properties. Here we use a high-resolution digital topography map and ice-penetrating radar data in combination with an inverse method to constrain the deformational properties of a lobate debris apron, a class of VFF, in the southern hemisphere of Mars. We find that while the creep parameter and accumulation rates are not well constrained in absolute values, their ratio is robust. We also find that the creep exponent is most likely n ≤ 3.
KW - Extraterrestrial glaciology
KW - glacier flow
KW - glacier mass balance
KW - glacier modelling
KW - ice temperature
UR - http://www.scopus.com/inward/record.url?scp=85072846449&partnerID=8YFLogxK
U2 - 10.1017/jog.2019.54
DO - 10.1017/jog.2019.54
M3 - Journal article
AN - SCOPUS:85072846449
VL - 65
SP - 889
EP - 899
JO - Journal of Glaciology
JF - Journal of Glaciology
SN - 0022-1430
IS - 254
ER -
ID: 230422621