Low-velocity impact craters in ice and ice-saturated sand with implications for Martian crater count ages.

S. K. Croft, Susan Kieffer, T. J. Ahrens

Research output: Contribution to journalArticle

Abstract

We produced a series of decimeter-sized impact craters in blocks of ice near 0oC and -70oC and in ice-saturated sand near -70oC as a preliminary investigation of cratering in materials analogous to those found on Mars and the outer solar satellites. Crater diameters in the ice-saturated sand were 2 times larger than craters in the same energy and velocity range in competent blocks of granite, basalt and cement. Craters in ice were c.3 times larger. Martian impact crater energy versus diameter scaling may thus be a function of latitude. -from Authors

Original languageEnglish (US)
Pages (from-to)8023-8032
Number of pages10
JournalJournal of Geophysical Research
Volume84
Issue numberB14
DOIs
StatePublished - Jan 1 1979
Externally publishedYes

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Ice
craters
sands
low speed
crater
ice
Sand
sand
basalt
granite
energy
cement
cratering
cements
Cements
mars
Satellites
Mars
scaling

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Low-velocity impact craters in ice and ice-saturated sand with implications for Martian crater count ages. / Croft, S. K.; Kieffer, Susan; Ahrens, T. J.

In: Journal of Geophysical Research, Vol. 84, No. B14, 01.01.1979, p. 8023-8032.

Research output: Contribution to journalArticle

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AB - We produced a series of decimeter-sized impact craters in blocks of ice near 0oC and -70oC and in ice-saturated sand near -70oC as a preliminary investigation of cratering in materials analogous to those found on Mars and the outer solar satellites. Crater diameters in the ice-saturated sand were 2 times larger than craters in the same energy and velocity range in competent blocks of granite, basalt and cement. Craters in ice were c.3 times larger. Martian impact crater energy versus diameter scaling may thus be a function of latitude. -from Authors

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