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Hurford T, Henning W, Maguire R, Lekic V, Schmerr N, Panning M, Bray V, Manga M, Kattenhorn S, Quick L, Rhoden A. Seismicity on tidally active solid-surface worlds. ICARUS 2019; 338:113466. [PMID: 32905557 PMCID: PMC7473397 DOI: 10.1016/j.icarus.2019.113466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Tidal interactions between planets or stars and the bodies that orbit them dissipate energy in their interiors. The dissipated energy heats the interior and a fraction of that energy will be released as seismic energy. Here we formalize a model to describe the tidally-driven seismic activity on planetary bodies based on tidal dissipation. To constrain the parameters of our model we use the seismic activity of the Moon, driven by tidal dissipation from the Earth-Moon interactions. We then apply this model to predict the amount of seismic energy release and largest seismic events on other moons in our Solar System and exoplanetary bodies. We find that many moons in the Solar System should be more seismically active than the Earth's Moon and many exoplanets should exhibit more seismic activity than the Earth. Finally, we examine how temporal-spatial variations in tidal dissipation manifest as variations in the locations and timing of seismic events on these bodies.
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Affiliation(s)
- T.A. Hurford
- Planetary Geology, Geophysics and Geochemistry Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - W.G. Henning
- Planetary Geology, Geophysics and Geochemistry Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
- University of Maryland, College Park, MD, USA
| | - R. Maguire
- Department of Geology, University of Maryland, College Park, MD, USA
| | - V. Lekic
- Department of Geology, University of Maryland, College Park, MD, USA
| | - N. Schmerr
- Department of Geology, University of Maryland, College Park, MD, USA
| | - M. Panning
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - V.J. Bray
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - M. Manga
- University of California, Berkeley, CA, USA
| | | | - L.C. Quick
- Planetary Geology, Geophysics and Geochemistry Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - A.R. Rhoden
- Arizona State University, Tempe, AZ, USA
- SouthWest Research Institution, Boulder, CO, USA
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Goins NR, Dainty AM, Toksöz MN. Lunar seismology: The internal structure of the Moon. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb086ib06p05061] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Williams JG, Boggs DH, Yoder CF, Ratcliff JT, Dickey JO. Lunar rotational dissipation in solid body and molten core. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2000je001396] [Citation(s) in RCA: 262] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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