Location
Physics : 401
Date & Time
December 3, 2014, 3:30 pm – 4:30 pm
Description
TITLE: Tidal heating and the interior structure of the Moon
ABSTRACT: Knowing the interior structure of a planet is important for understanding its evolution, such as its thermal and orbital history. The analysis of seismic waves is one of the most precise ways to investigate the interior structure. For the Moon such data exist but they are limited. The gravity field of a planet depends on its internal structure and thus can also constraint models of its interior. Here, I discuss the data and models used in the modeling of the interior structure of the Moon. I will also discuss efforts to reconcile the two, with the emphasis on a recent study showing that a low-viscosity zone may be present deep inside the Moon, generated by tidal heating. Finally, I will discuss how data of the Gravity Recovery and Interior Laboratory (GRAIL) spacecraft will help to further improve models of the lunar interior.
ABSTRACT: Knowing the interior structure of a planet is important for understanding its evolution, such as its thermal and orbital history. The analysis of seismic waves is one of the most precise ways to investigate the interior structure. For the Moon such data exist but they are limited. The gravity field of a planet depends on its internal structure and thus can also constraint models of its interior. Here, I discuss the data and models used in the modeling of the interior structure of the Moon. I will also discuss efforts to reconcile the two, with the emphasis on a recent study showing that a low-viscosity zone may be present deep inside the Moon, generated by tidal heating. Finally, I will discuss how data of the Gravity Recovery and Interior Laboratory (GRAIL) spacecraft will help to further improve models of the lunar interior.