SLICE: Spectral Signs of Life in Ice

Lead PI: Dr. Marco Tedesco , Christine Foreman

Unit Affiliation: Marine and Polar Geophysics, Lamont-Doherty Earth Observatory (LDEO)

April 2018 - April 2022
Inactive
Antarctica ; Arctic
Project Type: Research

DESCRIPTION: Identifying life on other planets is one of the most exciting challenges of our times. The Earth’s Polar Regions have long been recognized among the best terrestrial analogs for conditions on Mars, with cryoconite holes being one of the proposed habitats for life on other planets.Cryoconite holes are mini-entrained ecosystems, found in the ablation zone of glaciers that provide conditions by which subsurface liquid water can exist in spite of otherwise hostile environmental conditions.

One of the tools in the search for life has been the collection and interpretation of hyperspectral images; however the validation of reliable biomarkers in this data remains ongoing. The hyperspectral and associated measurements collected by SLICE are being used to support the analysis of data collected by theCompact Reconnaissance Imaging Spectrometer for Mars (CRISM), the OMEGA spectrometer on the Mars Express ESA mission and the THEMIS instrument on the MARS Odyssey mission. By studying the terrestrial analogs of cryoconite holes, we are isolating and culturing cryoconite organisms, determining their spectral signatures through in-situ and laboratory hyperspectral measurements and developing a spectral library of biosignatures. In this context, cryoconite holes represent a unique environment on Earth that resembles life on Mars.

SPONSOR:

Montana State University

ORIGINATING SPONSOR:

National Aeronautics & Space Administration (NASA)

EXTERNAL COLLABORATORS:

Montana State University

KEYWORDS

polar regions

THEMES

Earth fundamentals