Numerical simulations of drainage flows on Mars
Data collected by Viking Landers have shown that the meteorology of the near surface Martian environment is analogous to desertlike terrestrial conditions. Geological evidence such as dunes and frost streaks indicate that the surface wind is a potentially important factor in scouring of the martian...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19930010627 2023-05-15T13:42:51+02:00 Numerical simulations of drainage flows on Mars Parish, Thomas R. Howard, Alan D. Unclassified, Unlimited, Publicly available JAN 1, 1992 application/pdf http://hdl.handle.net/2060/19930010627 unknown Document ID: 19930010627 Accession ID: 93N19816 http://hdl.handle.net/2060/19930010627 No Copyright CASI LUNAR AND PLANETARY EXPLORATION Workshop on the Polar Regions of Mars: Geology, Glaciology, and Climate History, Part 1; p 19-23 1992 ftnasantrs 2015-03-15T04:36:01Z Data collected by Viking Landers have shown that the meteorology of the near surface Martian environment is analogous to desertlike terrestrial conditions. Geological evidence such as dunes and frost streaks indicate that the surface wind is a potentially important factor in scouring of the martian landscape. In particular, the north polar basin shows erosional features that suggest katabatic wind convergence into broad valleys near the margin of the polar cap. The pattern of katabatic wind drainage off the north polar cap is similar to that observed on Earth over Antarctica or Greenland. The sensitivity is explored of Martian drainage flows to variations in terrain slope and diurnal heating using a numerical modeling approach. The model used is a 2-D sigma coordinate primitive equation system that has been used for simulations of Antarctic drainage flows. Prognostic equations include the flux forms of the horizontal scalar momentum equations, temperature, and continuity. Parameterization of both longwave (terrestrial) and shortwave (solar) radiation is included. Turbulent transfer of heat and momentum in the Martian atmosphere remains uncertain since relevant measurements are essentially nonexistent. Other/Unknown Material Antarc* Antarctic Antarctica Greenland NASA Technical Reports Server (NTRS) Antarctic Greenland |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
LUNAR AND PLANETARY EXPLORATION |
spellingShingle |
LUNAR AND PLANETARY EXPLORATION Parish, Thomas R. Howard, Alan D. Numerical simulations of drainage flows on Mars |
topic_facet |
LUNAR AND PLANETARY EXPLORATION |
description |
Data collected by Viking Landers have shown that the meteorology of the near surface Martian environment is analogous to desertlike terrestrial conditions. Geological evidence such as dunes and frost streaks indicate that the surface wind is a potentially important factor in scouring of the martian landscape. In particular, the north polar basin shows erosional features that suggest katabatic wind convergence into broad valleys near the margin of the polar cap. The pattern of katabatic wind drainage off the north polar cap is similar to that observed on Earth over Antarctica or Greenland. The sensitivity is explored of Martian drainage flows to variations in terrain slope and diurnal heating using a numerical modeling approach. The model used is a 2-D sigma coordinate primitive equation system that has been used for simulations of Antarctic drainage flows. Prognostic equations include the flux forms of the horizontal scalar momentum equations, temperature, and continuity. Parameterization of both longwave (terrestrial) and shortwave (solar) radiation is included. Turbulent transfer of heat and momentum in the Martian atmosphere remains uncertain since relevant measurements are essentially nonexistent. |
format |
Other/Unknown Material |
author |
Parish, Thomas R. Howard, Alan D. |
author_facet |
Parish, Thomas R. Howard, Alan D. |
author_sort |
Parish, Thomas R. |
title |
Numerical simulations of drainage flows on Mars |
title_short |
Numerical simulations of drainage flows on Mars |
title_full |
Numerical simulations of drainage flows on Mars |
title_fullStr |
Numerical simulations of drainage flows on Mars |
title_full_unstemmed |
Numerical simulations of drainage flows on Mars |
title_sort |
numerical simulations of drainage flows on mars |
publishDate |
1992 |
url |
http://hdl.handle.net/2060/19930010627 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Greenland |
genre_facet |
Antarc* Antarctic Antarctica Greenland |
op_source |
CASI |
op_relation |
Document ID: 19930010627 Accession ID: 93N19816 http://hdl.handle.net/2060/19930010627 |
op_rights |
No Copyright |
_version_ |
1766173664140591104 |