Potential antifreeze compounds in present-day Martian seepage groundwater

Jiin Shuh Jean, Chieh Hou Yang, Ming Jer Lee, Ming Kuo Lee, Ming Hung Chien

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Is the recently found seepage groundwater on Mars pure H2O, or mixed with salts and other antifreeze compounds? Given the surface conditions of Mars, it is unlikely that pure water could either exist in its liquid state or have shaped Mars' fluid erosional landforms (gullies, channels, and valley networks). More likely is that Mars' seepage groundwater contains antifreeze and salt compounds that resist freezing and suppress evaporation. This model better accounts for Mars' enigmatic surface erosion. This paper suggests 17 antifreeze compounds potentially present in Martian seepage groundwater. Given their liquid state and physical properties, triethylene glycol, diethylene glycol, ethylene glycol, and 1,3-propylene glycol are advanced as the most likely candidate compounds. This paper also explores how a mixing of glycol or glycerol with salts in the Martian seepage groundwater may have lowered water's freezing point and raised its boiling point, with consequences that created fluid gully and channel erosion. Ethylene glycol and related hydrocarbon compounds have been identified in Martian and other interstellar meteorites. We suggest that these compounds and their proportions to water be included for detection in future explorations.

Original languageEnglish
Pages (from-to)279-289
Number of pages11
JournalTerrestrial, Atmospheric and Oceanic Sciences
Volume19
Issue number3
DOIs
Publication statusPublished - 2008 Jun

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)

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