History of the Dissipation Factor Used in Planetary Tides Modeling

Details History of the Dissipation Factor Used in Planetary Tides Modeling History of the Dissipation Factor Used in Planetary Tides Modeling

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.2410c&link_type=abstract

American Astronomical Society, DPS meeting #42, #24.10; Bulletin of the American Astronomical Society, Vol. 42, p.959

Astronomy and Astrophysics

Astronomy

Scientific paper

The dissipation factor is a key parameter determining the geophysical and dynamical evolution of planetary bodies. Different approaches for quantifying that parameter have been introduced over the past fifty years: inference from the dynamical behavior of planetary satellites, theoretical considerations, terrestrial analogs, and experimental measurements. Generally, the preferred approach is much influenced by the state of the art in laboratory research on material attenuation properties at a given time. As a corollary, in absence of dedicated laboratory studies, the modeling of certain objects (e.g., of very porous bodies) have had to rely on educated guesses. This presentation is not aimed at criticizing or expressing a preference for any specific approach. Its purpose is to recal the assumptions behind certain values of the dissipation factor found in the literature or the context in which they have been introduced. We will also present the state of the art in laboratory research on that topic and highlight areas where future development is needed in order to develop dissipation models specific to certain classes of objects (e.g., small bodies).
This work has been conducted at the Jet Propulsion Laboratory, California Institute of Technology, under a contract to NASA. Government sponsorship acknowledged.

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