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OUR PROPOSED STUDY IS RELEVANT TO A NUMBER OF ELEMENTS OF THE SOLAR SYSTEMS WORKING PROGRAM. TIDES ARE GEOLOGICALLY IMPORTANT BECAUSE THEY DISSIPATE HEAT AND CAN CAUSE VULCANISM (IO) OR CRYOVULCANISM (E.G. ENCELADUS). TIDES INDUCE STRESSES THAT CAUSE CRUSTAL SURFACE FRACTURES (RELEVANT FOR INFERRING LITHOSPHERIC STRUCTURE AND A PROCESS CAUSING TECTONIC ACTIVITY). TIDES AFFECT ORBITAL EVOLUTION BY CAUSING DRIFTS IN ORBITAL ELEMENTS SPIN RATE AND OBLIQUITY. TIDAL TORQUES CONTINUE TO INFLUENCE ORBITAL EVOLUTION (E.G. DRIFT IN RESONANCE SPIN EVOLUTION) AND INTERNAL HEAT GENERATION IN PLANETARY BODIES TODAY SO DO NOT ONLY IMPACT STUDIES OF THE EARLY SOLAR SYSTEM. THE TIDAL RESPONSE OF A BODY DEPENDS ON PROPERTIES OF THE INTERIOR (VISCOELASTIC PARAMETERS OR RHEOLOGY) AND SO PROVIDES A UNIQUE CONSTRAINT ON INTERNAL COMPOSITION. TIDAL TORQUES AFFECT ORBITAL DYNAMICS AND SO ARE A DYNAMICAL PROCESS RELEVANT FOR INTERPRETATION OF NUMEROUS PLANETARY AND MINOR-BODY SYSTEMS INCLUDING THE EARTH-MOON SYSTEM. OUR WORK WILL EXPAND OUR UNDERSTANDING OF TIDAL EVOLUTION BY COVERING MORE COMPLEX SETTINGS (BINARY RAPIDLY SPINNING SYSTEMS TUMBLING PRECESSING LIBRATING NON-SPHERICAL AND INHOMOGENEOUS BODIES) IMPROVE OUR ABILITY TO CALCULATE HEAT DISTRIBUTION AND DISSIPATION RATES AND EXPLORE DYNAMICS OF SPIN/ORBIT RESONANCES.

$329,847FY2020National Aeronautics and Space AdministrationNASA

University Of Rochester, Rochester NY

Investigators

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