Observations of periglacial landforms in utopia planitia with the high resolution imaging science experiment (HiRISE)

A. Lefort, P. S. Russell, N. Thomas, Alfred S. McEwen, C. M. Dundas, R. L. Kirk Physikalisches

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

The region of western Utopia Planitia (80-105°E, 40-55°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.

Original languageEnglish (US)
Article numberE04005
JournalJournal of Geophysical Research: Space Physics
Volume114
Issue number4
DOIs
StatePublished - Apr 20 2009

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periglacial landform
Landforms
landforms
Ice
Sublimation
sublimation
polygon
ice
Imaging techniques
polygons
high resolution
periglacial feature
experiment
Experiments
obliquity
landform
Melting
imagery
melting
Earth (planet)

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

Cite this

Observations of periglacial landforms in utopia planitia with the high resolution imaging science experiment (HiRISE). / Lefort, A.; Russell, P. S.; Thomas, N.; McEwen, Alfred S.; Dundas, C. M.; Kirk Physikalisches, R. L.

In: Journal of Geophysical Research: Space Physics, Vol. 114, No. 4, E04005, 20.04.2009.

Research output: Contribution to journalArticle

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