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arXiv · 1602.06016

Prospects of Passive Radio Detection of a Subsurface Ocean on Europa with a Lander

Andrew Romero-Wolf·Dustin M. Schroeder·Paul Ries·Bruce G. Bills·Charles Naudet·Bryan R. Scott·Robert Treuhaft·Steve Vance
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Abstract

We estimate the sensitivity of a lander-based instrument for the passive radio detection of a subsurface ocean beneath the ice shell of Europa, expected to be between 3~km - 30~km thick, using Jupiter's decametric radiation. A passive technique was previously studied for an orbiter. Using passive detection in a lander platform provides a point measurement with significant improvements due to largely reduced losses from surface roughness effects, longer integration times, and diminished dispersion due to ionospheric effects allowing operation at lower frequencies and a wider band. A passive sounder on-board a lander provides a low resource instrument sensitive to subsurface ocean at Europa up to depths of 6.9~km for high loss ice (16 dB/km two-way attenuation rate) and 69~km for pure ice (1.6 dB/km).

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Andrew Romero-Wolf, Dustin M. Schroeder, Paul Ries, Bruce G. Bills, Charles Naudet, Bryan R. Scott, Robert Treuhaft, Steve Vance. 2016-06-15. Prospects of Passive Radio Detection of a Subsurface Ocean on Europa with a Lander. https://doi.org/10.1016/j.pss.2016.06.010

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