Evidence for glaciation in Elysium
Evidence for the existence of permafrost and the surface modification due to frost effects and the presence of ice on Mars dates from early observations. Later analysis of the Viking Orbiter imagery produced evidence suggesting the former presence of ice sheets that could have played a part in shapi...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19870014035 2023-05-15T13:35:11+02:00 Evidence for glaciation in Elysium Anderson, Duwayne M. Unclassified, Unlimited, Publicly available May 1, 1987 application/pdf http://hdl.handle.net/2060/19870014035 unknown Document ID: 19870014035 Accession ID: 87N23468 http://hdl.handle.net/2060/19870014035 No Copyright CASI LUNAR AND PLANETARY EXPLORATION NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986; p 310-312 1987 ftnasantrs 2015-03-15T06:30:45Z Evidence for the existence of permafrost and the surface modification due to frost effects and the presence of ice on Mars dates from early observations. Later analysis of the Viking Orbiter imagery produced evidence suggesting the former presence of ice sheets that could have played a part in shaping the surface of Mars. Similarities were pointed out between a number of streamlined Martian channel features and similar streamlined landforms created by Antarctic ice sheet movement. A study of Viking Orbiter imagery of Granicus Valles and the surrounding terrain in Elysium has produced further evidence of glaciation on Mars. Volcanism has played an important role in developing the landscapes of the Elysium region. A possible explanation is that subsidence occurred during formation of the Martian moberg ridges due to the melting of ground ice near the eruption area while at a distance most of the ground ice in the permafrost is still present and the original elevation was preserved. Meltwater during and following eruptions might be suddenly released during subglacial volcanism into Granicus Valles in one case and into Hrad Valles in the other. Fluvial erosion thus could have played a role in shaping both. Other/Unknown Material Antarc* Antarctic Ice Ice Sheet permafrost NASA Technical Reports Server (NTRS) Antarctic Valles ENVELOPE(-58.783,-58.783,-62.167,-62.167) Moberg ENVELOPE(20.782,20.782,69.518,69.518) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
LUNAR AND PLANETARY EXPLORATION |
spellingShingle |
LUNAR AND PLANETARY EXPLORATION Anderson, Duwayne M. Evidence for glaciation in Elysium |
topic_facet |
LUNAR AND PLANETARY EXPLORATION |
description |
Evidence for the existence of permafrost and the surface modification due to frost effects and the presence of ice on Mars dates from early observations. Later analysis of the Viking Orbiter imagery produced evidence suggesting the former presence of ice sheets that could have played a part in shaping the surface of Mars. Similarities were pointed out between a number of streamlined Martian channel features and similar streamlined landforms created by Antarctic ice sheet movement. A study of Viking Orbiter imagery of Granicus Valles and the surrounding terrain in Elysium has produced further evidence of glaciation on Mars. Volcanism has played an important role in developing the landscapes of the Elysium region. A possible explanation is that subsidence occurred during formation of the Martian moberg ridges due to the melting of ground ice near the eruption area while at a distance most of the ground ice in the permafrost is still present and the original elevation was preserved. Meltwater during and following eruptions might be suddenly released during subglacial volcanism into Granicus Valles in one case and into Hrad Valles in the other. Fluvial erosion thus could have played a role in shaping both. |
format |
Other/Unknown Material |
author |
Anderson, Duwayne M. |
author_facet |
Anderson, Duwayne M. |
author_sort |
Anderson, Duwayne M. |
title |
Evidence for glaciation in Elysium |
title_short |
Evidence for glaciation in Elysium |
title_full |
Evidence for glaciation in Elysium |
title_fullStr |
Evidence for glaciation in Elysium |
title_full_unstemmed |
Evidence for glaciation in Elysium |
title_sort |
evidence for glaciation in elysium |
publishDate |
1987 |
url |
http://hdl.handle.net/2060/19870014035 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-58.783,-58.783,-62.167,-62.167) ENVELOPE(20.782,20.782,69.518,69.518) |
geographic |
Antarctic Valles Moberg |
geographic_facet |
Antarctic Valles Moberg |
genre |
Antarc* Antarctic Ice Ice Sheet permafrost |
genre_facet |
Antarc* Antarctic Ice Ice Sheet permafrost |
op_source |
CASI |
op_relation |
Document ID: 19870014035 Accession ID: 87N23468 http://hdl.handle.net/2060/19870014035 |
op_rights |
No Copyright |
_version_ |
1766062109387390976 |