Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter
Elevations from the Mars Orbiter Laser Altimeter (MOLA) have been used to construct a precise topographic map of the martian north polar region. The northern ice cap has a maximum elevation of 3 kilometers above its surroundings but lies within a 5-kilometer-deep hemispheric depression that is conti...
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American Association for the Advancement of Science
1998
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ftcaltechauth:oai:authors.library.caltech.edu:36621 2023-05-15T16:29:01+02:00 Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter Zuber, Maria T. Smith, David E. Solomon, Sean C. Abshire, James B. Afzal, Robert S. Aharonson, Oded Fishbaugh, Kathryn Ford, Peter G. Frey, Herbert V. Garvin, James B. Head, James W. Ivanov, Anton B. Johnson, Catherine L. Muhleman, Duane O. Neumann, Gregory A. Pettengill, Gordon H. Phillips, Roger J. Sun, Xiaoli Zwally, H. Jay Banerdt, W. Bruce Duxbury, Thomas H. 1998-12-11 https://authors.library.caltech.edu/36621/ https://resolver.caltech.edu/CaltechAUTHORS:20130128-105214414 unknown American Association for the Advancement of Science Zuber, Maria T. and Smith, David E. and Solomon, Sean C. and Abshire, James B. and Afzal, Robert S. and Aharonson, Oded and Fishbaugh, Kathryn and Ford, Peter G. and Frey, Herbert V. and Garvin, James B. and Head, James W. and Ivanov, Anton B. and Johnson, Catherine L. and Muhleman, Duane O. and Neumann, Gregory A. and Pettengill, Gordon H. and Phillips, Roger J. and Sun, Xiaoli and Zwally, H. Jay and Banerdt, W. Bruce and Duxbury, Thomas H. (1998) Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter. Science, 282 (5396). pp. 2053-2060. ISSN 0036-8075. doi:10.1126/science.282.5396.2053. https://resolver.caltech.edu/CaltechAUTHORS:20130128-105214414 <https://resolver.caltech.edu/CaltechAUTHORS:20130128-105214414> Article PeerReviewed 1998 ftcaltechauth https://doi.org/10.1126/science.282.5396.2053 2021-11-11T18:52:36Z Elevations from the Mars Orbiter Laser Altimeter (MOLA) have been used to construct a precise topographic map of the martian north polar region. The northern ice cap has a maximum elevation of 3 kilometers above its surroundings but lies within a 5-kilometer-deep hemispheric depression that is contiguous with the area into which most outflow channels emptied. Polar cap topography displays evidence of modification by ablation, flow, and wind and is consistent with a primarily H_(2)O composition. Correlation of topography with images suggests that the cap was more spatially extensive in the past. The cap volume of 1.2 × 10^6 to 1.7 × 10^6 cubic kilometers is about half that of the Greenland ice cap. Clouds observed over the polar cap are likely composed of CO_2 that condensed out of the atmosphere during northern hemisphere winter. Many clouds exhibit dynamical structure likely caused by the interaction of propagating wave fronts with surface topography. Article in Journal/Newspaper Greenland Ice cap Caltech Authors (California Institute of Technology) Greenland Science 282 5396 2053 2060 |
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Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
unknown |
description |
Elevations from the Mars Orbiter Laser Altimeter (MOLA) have been used to construct a precise topographic map of the martian north polar region. The northern ice cap has a maximum elevation of 3 kilometers above its surroundings but lies within a 5-kilometer-deep hemispheric depression that is contiguous with the area into which most outflow channels emptied. Polar cap topography displays evidence of modification by ablation, flow, and wind and is consistent with a primarily H_(2)O composition. Correlation of topography with images suggests that the cap was more spatially extensive in the past. The cap volume of 1.2 × 10^6 to 1.7 × 10^6 cubic kilometers is about half that of the Greenland ice cap. Clouds observed over the polar cap are likely composed of CO_2 that condensed out of the atmosphere during northern hemisphere winter. Many clouds exhibit dynamical structure likely caused by the interaction of propagating wave fronts with surface topography. |
format |
Article in Journal/Newspaper |
author |
Zuber, Maria T. Smith, David E. Solomon, Sean C. Abshire, James B. Afzal, Robert S. Aharonson, Oded Fishbaugh, Kathryn Ford, Peter G. Frey, Herbert V. Garvin, James B. Head, James W. Ivanov, Anton B. Johnson, Catherine L. Muhleman, Duane O. Neumann, Gregory A. Pettengill, Gordon H. Phillips, Roger J. Sun, Xiaoli Zwally, H. Jay Banerdt, W. Bruce Duxbury, Thomas H. |
spellingShingle |
Zuber, Maria T. Smith, David E. Solomon, Sean C. Abshire, James B. Afzal, Robert S. Aharonson, Oded Fishbaugh, Kathryn Ford, Peter G. Frey, Herbert V. Garvin, James B. Head, James W. Ivanov, Anton B. Johnson, Catherine L. Muhleman, Duane O. Neumann, Gregory A. Pettengill, Gordon H. Phillips, Roger J. Sun, Xiaoli Zwally, H. Jay Banerdt, W. Bruce Duxbury, Thomas H. Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter |
author_facet |
Zuber, Maria T. Smith, David E. Solomon, Sean C. Abshire, James B. Afzal, Robert S. Aharonson, Oded Fishbaugh, Kathryn Ford, Peter G. Frey, Herbert V. Garvin, James B. Head, James W. Ivanov, Anton B. Johnson, Catherine L. Muhleman, Duane O. Neumann, Gregory A. Pettengill, Gordon H. Phillips, Roger J. Sun, Xiaoli Zwally, H. Jay Banerdt, W. Bruce Duxbury, Thomas H. |
author_sort |
Zuber, Maria T. |
title |
Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter |
title_short |
Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter |
title_full |
Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter |
title_fullStr |
Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter |
title_full_unstemmed |
Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter |
title_sort |
observations of the north polar region of mars from the mars orbiter laser altimeter |
publisher |
American Association for the Advancement of Science |
publishDate |
1998 |
url |
https://authors.library.caltech.edu/36621/ https://resolver.caltech.edu/CaltechAUTHORS:20130128-105214414 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice cap |
genre_facet |
Greenland Ice cap |
op_relation |
Zuber, Maria T. and Smith, David E. and Solomon, Sean C. and Abshire, James B. and Afzal, Robert S. and Aharonson, Oded and Fishbaugh, Kathryn and Ford, Peter G. and Frey, Herbert V. and Garvin, James B. and Head, James W. and Ivanov, Anton B. and Johnson, Catherine L. and Muhleman, Duane O. and Neumann, Gregory A. and Pettengill, Gordon H. and Phillips, Roger J. and Sun, Xiaoli and Zwally, H. Jay and Banerdt, W. Bruce and Duxbury, Thomas H. (1998) Observations of the North Polar Region of Mars from the Mars Orbiter Laser Altimeter. Science, 282 (5396). pp. 2053-2060. ISSN 0036-8075. doi:10.1126/science.282.5396.2053. https://resolver.caltech.edu/CaltechAUTHORS:20130128-105214414 <https://resolver.caltech.edu/CaltechAUTHORS:20130128-105214414> |
op_doi |
https://doi.org/10.1126/science.282.5396.2053 |
container_title |
Science |
container_volume |
282 |
container_issue |
5396 |
container_start_page |
2053 |
op_container_end_page |
2060 |
_version_ |
1766018714182877184 |