Searching for Liquid Water in Europa by Using Surface Observatories

Details Searching for Liquid Water in Europa by Using Surface Observatories Searching for Liquid Water in Europa by Using Surface Observatories

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002asbio...2...93k&link_type=abstract

Proceedings of the National Academy of Sciences, Volume 2, Issue 1, pp. 93-103.

Mathematics

Logic

7

Europa, Ocean, Galileo, Liquid Water, Search For Life, Electromagnetic Induction, Seismic Exploration

Scientific paper

Liquid water, as far as we know, is an indispensable ingredient of life. Therefore, locating reservoirs of liquid water in extraterrestrial bodies is a necessary prerequisite to searching for life. Recent geological and geophysical observations from the Galileo spacecraft, though not unambiguous, hint at the possibility of a subsurface ocean in the Jovian moon Europa. After summarizing present evidence for liquid water in Europa, we show that electromagnetic and seismic observations made from as few as two surface observatories comprising a magnetometer and a seismometer offer the best hope of unambiguous characterization of the three-dimensional structure of the ocean and the deeper interior of this icy moon. The observatories would also help us infer the composition of the icy crust and the ocean water.

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