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<p>The Europa Clipper mission will investigate the geophysical properties of Europa, one of Jupiter’s Galilean moons, to assess its habitability. Geodetic measurements will play a critical role in determining Europa’s internal structure, including the thickness of the ice shell, the presence and extent of a subsurface ocean, and the distribution of mass in the deeper interior. To build the necessary geodetic data set, the Geodesy Focus Group (GFG) coordinates cross-instrument efforts to measure Europa’s global shape, rotational parameters, gravity field, and degree-2 tidal Love numbers (<InlineEquation ID="IEq1"> <EquationSource Format="MATHML"><math> <msub> <mi>k</mi> <mn>2</mn> </msub> </math></EquationSource> <EquationSource Format="TEX">$k_{2}$</EquationSource> </InlineEquation> and <InlineEquation ID="IEq2"> <EquationSource Format="MATHML"><math> <msub> <mi>h</mi> <mn>2</mn> </msub> </math></EquationSource> <EquationSource Format="TEX">$h_{2}$</EquationSource> </InlineEquation>). Here we summarize how data from the Gravity/Radio Science (G/RS) investigation, Europa Imaging System (EIS), Radar for Europa Assessment and Sounding (REASON), and Europa Ultraviolet Spectrograph (Europa-UVS) will be used to infer geodetic constraints on the interior structure and to establish a precise cartographic reference system for geophysical and geological interpretation. Together, the resulting geodetic information will contribute to a deeper understanding of Europa’s internal dynamics and the potential habitability of its ocean.</p>

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Geodetic Investigations of the Europa Clipper Mission

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月3日

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  • G. Steinbrügge,
  • R. S. Park,
  • J. H. Roberts,
  • M. Bland,
  • S. Brooks,
  • J. Castillo-Rogez,
  • G. Cascioli,
  • A. Genova,
  • T. Greathouse,
  • H. Hussmann,
  • R. Kirk,
  • A. Magnanini,
  • E. Mazarico,
  • F. Nimmo,
  • M. S. Park,
  • F. Petricca,
  • K. Retherford,
  • D. M. Schroeder,
  • K. M. Soderlund,
  • P. Tortora,
  • M. Zannoni

摘要

The Europa Clipper mission will investigate the geophysical properties of Europa, one of Jupiter’s Galilean moons, to assess its habitability. Geodetic measurements will play a critical role in determining Europa’s internal structure, including the thickness of the ice shell, the presence and extent of a subsurface ocean, and the distribution of mass in the deeper interior. To build the necessary geodetic data set, the Geodesy Focus Group (GFG) coordinates cross-instrument efforts to measure Europa’s global shape, rotational parameters, gravity field, and degree-2 tidal Love numbers ( k 2 $k_{2}$ and h 2 $h_{2}$ ). Here we summarize how data from the Gravity/Radio Science (G/RS) investigation, Europa Imaging System (EIS), Radar for Europa Assessment and Sounding (REASON), and Europa Ultraviolet Spectrograph (Europa-UVS) will be used to infer geodetic constraints on the interior structure and to establish a precise cartographic reference system for geophysical and geological interpretation. Together, the resulting geodetic information will contribute to a deeper understanding of Europa’s internal dynamics and the potential habitability of its ocean.