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Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

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In Search of Subsurface Oceans Within the Uranian Moons.

C J Cochrane¹, S D Vance¹, T A Nordheim¹

¹Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA.

Journal of Geophysical Research. Planets

|July 21, 2022

Summary

Magnetic induction can detect hidden subsurface oceans on Uranus

Keywords:

Ariel Miranda Umbriel Uranus magnetic induction ocean worlds

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Area of Science:

Planetary Science
Geophysics
Astrobiology

Background:

The Galileo mission detected subsurface oceans on Jovian moons via magnetic induction.
Ice giants like Uranus and Neptune offer unique magnetic field environments for similar studies.
Voyager 2 hinted at subsurface oceans on Uranian moons but lacked detection capabilities.

Purpose of the Study:

Assess magnetic induction for detecting subsurface oceans on Uranian moons.
Determine if induction signatures can differentiate ocean characteristics (thickness, conductivity, depth).
Evaluate ionospheric conductance influence on induction responses.

Main Methods:

Simulated magnetic induction responses for Uranian moons.
Modeled interior structures with varying ocean properties and ionospheric conductance.
Analyzed signal distinguishability for single-pass detection.

Main Results:

Magnetic induction is a viable technique for detecting subsurface oceans on Uranian moons.
Distinct induction signatures can characterize ocean thickness, conductivity, and depth.
Ionospheric conductance can be distinguished from ocean-derived signals.
Single-pass detection and characterization are feasible for moons like Miranda, Ariel, and Umbriel.

Conclusions:

Future missions to Uranus can discover and characterize subsurface oceans using magnetic induction.
This technique expands the search for ocean worlds in our solar system.
Provides guidance for mission design, including magnetometer selection and trajectory planning.