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Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

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Planetary science: are there active glaciers on Mars?

Alan R Gillespie¹, David R Montgomery, Amit Mushkin

¹Quaternary Research Center and Department of Earth and Space Sciences, University of Washington, Seattle, Washington 98195-1310, USA. alan@rad.ess.washington.edu

|December 13, 2005

Summary

Recent Martian glaciers, potentially rock glaciers, suggest local snowfall augmented accumulation. This challenges previous climate change theories for Mars, offering new insights into glacial activity.

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Area of Science:

Planetary Science
Glaciology
Mars Express Mission

Background:

Interpreting Mars Express high-resolution stereo images reveals geologically recent rock glaciers in Tharsis and a piedmont glacier east of Hellas.
Previous interpretations attributed Martian glacier growth to increased spin-axis obliquity and climate change.

Discussion:

The study examines evidence supporting local snowfall augmentation of accumulation, independent of global climate change.
The 'hourglass' glacier, estimated to be over 40 million years old, is considered inactive and shrinking under a debris cover.

Key Insights:

Geologically recent Martian glaciers, including rock glaciers, show evidence of local snowfall contributing to their growth.
A mechanism for local snow accumulation is proposed that does not necessitate significant Martian climate change.

Outlook:

Further investigation into localized Martian climate processes and glacial dynamics.
Refining models of ice accumulation and preservation on Mars.