Name
Tides from Geodesy, Elsewhere
Date & Time
Wednesday, May 27, 2026, 11:30 AM - 11:45 AM
Description
Decades of Satellite Geodesy research have significantly advanced, both directly and indirectly, our understanding of tides in the Earth system. Modelling techniques of tidal deformation fields, well developed in such research, have naturally been extended to studying similar fields of planet-moon systems, Jupiter-Europa in particular. Work done following the Galileo mission primarily focussed on predicting the tidal gravity field of the Europa system (i.e. its icy shell, underlying ocean, deep interior), as would be measured in-situ by a landed gravimeter adapted to the harsh conditions of the European surface. Such a gravimeter was part of the planned payload of NASA’s Europa Lander project. The latter was recently shelved but will be revised round 2030, following the arrival of the Europa Clipper space probe in Jovian space. Here, we suggest to add a tiltmeter to an eventual payload; such device can provide more constraints, both dynamic and static, on the state of Europa’s upper layer, its icy shell in particular. We modeled the evolution of Europa’s tidal tilt field over a full orbit about Jupiter, using a tidal potential expressed in terms of eccentricity. Tidal tilt field contours were produced, showing angular deviations in the mrad range; thus, providing a basic criterion for designing an adapted tiltmeter. We also calculated surface tilt Green’s functions from Martens et al.’s LoadDef toolkit for various European structural models.
Location Name
McCain 2017
Full Address
Dalhousie University
Halifax NS
Canada
Session Type
Oral Presentation
Abstract ID
406
Speaker Organization
Memorial University of Newfoundland
Session Name
G1
Co-authors
Victor Hayden, School of Science & the Environment / Physics, Memorial University - Grenfell Campus Colton Follow, Department of Physics & Physical Oceanography, Memorial University - St. John's Campus
Presenting Author
Pierre-Michel Rouleau, School of Science & the Environment / Physics, Memorial University - Grenfell Campus