Observations of periglacial landforms in Utopia Planitia with the High Resolution Imaging Science Experiment (HiRISE)
Journal of Geophysical Research
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Abstract
The region of western Utopia Planitia (80-105 degreesE, 40-55 degrees N) displays several types of landforms similar to Earth periglacial features, including scallop-shaped depressions and networks of polygonal terrains. The scalloped depressions have been proposed to originate from thermokarstic processes such as sublimation and/or melting of near-surface ground ice. Using HiRISE imagery, we characterize these depressions and several associated, distinct polygon networks in unprecedented morphologic and topographic detail and investigate support for an ice-based degradation process. The scalloped depressions and interior polygons and ridges are found to evolve together, mainly influenced by sublimation, local proximity of ground ice to the surface, and obliquity variations.
Suggested Citation
Lefort, A., Russell, P., Thomas, N., McEwen, A.S., Dundas, C.M., Kirk, R.L., 2009, Observations of periglacial landforms in Utopia Planitia with the High Resolution Imaging Science Experiment (HiRISE): Journal of Geophysical Research, v. 114, no. E4, 18 p., https://doi.org/10.1029/2008JE003264.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Observations of periglacial landforms in Utopia Planitia with the High Resolution Imaging Science Experiment (HiRISE) |
| Series title | Journal of Geophysical Research |
| DOI | 10.1029/2008JE003264 |
| Volume | 114 |
| Issue | E4 |
| Year Published | 2009 |
| Language | English |
| Publisher | American Geophysical Union |
| Publisher location | Washington, D.C. |
| Contributing office(s) | Astrogeology Science Center |
| Description | 18 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Geophysical Research |
| Other Geospatial | Mars; Utopia Planitia |