A Large New Crater Exposes the Limits of Water Ice on Mars
Water ice in the Martian mid-latitudes has advanced and retreated in response to variations in the planet's orbit, obliquity, and climate. A 150 m-diameter new impact crater near 35°N provides the lowest-latitude impact exposure of subsurface ice on Mars. This is the largest known ice-exposing...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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AMER GEOPHYSICAL UNION
2023
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/FT210100063 http://hdl.handle.net/20.500.11937/96130 |
| _version_ | 1848766097337090048 |
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| author | Dundas, C.M. Mellon, M.T. Posiolova, L.V. Miljković, Katarina Collins, G.S. Tornabene, L.L. Rangarajan, V.G. Golombek, M.P. Warner, N.H. Daubar, I.J. Byrne, S. McEwen, A.S. Seelos, K.D. Viola, D. Bramson, A.M. Speth, G. |
| author_facet | Dundas, C.M. Mellon, M.T. Posiolova, L.V. Miljković, Katarina Collins, G.S. Tornabene, L.L. Rangarajan, V.G. Golombek, M.P. Warner, N.H. Daubar, I.J. Byrne, S. McEwen, A.S. Seelos, K.D. Viola, D. Bramson, A.M. Speth, G. |
| author_sort | Dundas, C.M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Water ice in the Martian mid-latitudes has advanced and retreated in response to variations in the planet's orbit, obliquity, and climate. A 150 m-diameter new impact crater near 35°N provides the lowest-latitude impact exposure of subsurface ice on Mars. This is the largest known ice-exposing crater and provides key constraints on Martian climate history. This crater indicates a regional, relatively pure ice deposit that is unstable and has nearly vanished. In the past, this deposit may have been tens of meters thick and extended equatorward of 35°N. We infer that it is overlain by pore ice emplaced during temporary stable intervals, due to recent climate variability. The marginal survival of ice here suggests that it is near the edge of shallow ice that regularly exchanges with the atmosphere. |
| first_indexed | 2025-11-14T11:45:44Z |
| format | Journal Article |
| id | curtin-20.500.11937-96130 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:45:44Z |
| publishDate | 2023 |
| publisher | AMER GEOPHYSICAL UNION |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-961302024-11-07T01:06:51Z A Large New Crater Exposes the Limits of Water Ice on Mars Dundas, C.M. Mellon, M.T. Posiolova, L.V. Miljković, Katarina Collins, G.S. Tornabene, L.L. Rangarajan, V.G. Golombek, M.P. Warner, N.H. Daubar, I.J. Byrne, S. McEwen, A.S. Seelos, K.D. Viola, D. Bramson, A.M. Speth, G. Science & Technology Physical Sciences Geosciences, Multidisciplinary Geology Mars ice subsurface midlatitudes climate SOUTHERN-HEMISPHERE SUBSURFACE ICE IMPACT CRATERS NEAR-SURFACE GROUND ICE DEFORMATION SUBLIMATION DIFFUSION GLACIERS HYDROGEN Water ice in the Martian mid-latitudes has advanced and retreated in response to variations in the planet's orbit, obliquity, and climate. A 150 m-diameter new impact crater near 35°N provides the lowest-latitude impact exposure of subsurface ice on Mars. This is the largest known ice-exposing crater and provides key constraints on Martian climate history. This crater indicates a regional, relatively pure ice deposit that is unstable and has nearly vanished. In the past, this deposit may have been tens of meters thick and extended equatorward of 35°N. We infer that it is overlain by pore ice emplaced during temporary stable intervals, due to recent climate variability. The marginal survival of ice here suggests that it is near the edge of shallow ice that regularly exchanges with the atmosphere. 2023 Journal Article http://hdl.handle.net/20.500.11937/96130 10.1029/2022GL100747 English http://purl.org/au-research/grants/arc/FT210100063 https://creativecommons.org/licenses/by-nc-nd/4.0/ AMER GEOPHYSICAL UNION fulltext |
| spellingShingle | Science & Technology Physical Sciences Geosciences, Multidisciplinary Geology Mars ice subsurface midlatitudes climate SOUTHERN-HEMISPHERE SUBSURFACE ICE IMPACT CRATERS NEAR-SURFACE GROUND ICE DEFORMATION SUBLIMATION DIFFUSION GLACIERS HYDROGEN Dundas, C.M. Mellon, M.T. Posiolova, L.V. Miljković, Katarina Collins, G.S. Tornabene, L.L. Rangarajan, V.G. Golombek, M.P. Warner, N.H. Daubar, I.J. Byrne, S. McEwen, A.S. Seelos, K.D. Viola, D. Bramson, A.M. Speth, G. A Large New Crater Exposes the Limits of Water Ice on Mars |
| title | A Large New Crater Exposes the Limits of Water Ice on Mars |
| title_full | A Large New Crater Exposes the Limits of Water Ice on Mars |
| title_fullStr | A Large New Crater Exposes the Limits of Water Ice on Mars |
| title_full_unstemmed | A Large New Crater Exposes the Limits of Water Ice on Mars |
| title_short | A Large New Crater Exposes the Limits of Water Ice on Mars |
| title_sort | large new crater exposes the limits of water ice on mars |
| topic | Science & Technology Physical Sciences Geosciences, Multidisciplinary Geology Mars ice subsurface midlatitudes climate SOUTHERN-HEMISPHERE SUBSURFACE ICE IMPACT CRATERS NEAR-SURFACE GROUND ICE DEFORMATION SUBLIMATION DIFFUSION GLACIERS HYDROGEN |
| url | http://purl.org/au-research/grants/arc/FT210100063 http://hdl.handle.net/20.500.11937/96130 |