Earth's geodynamics and earthquakes

by Carlo Doglioni (Istituto Nazionale di Geofisica e Vulcanologia (INGV) e "La Sapienza")

Tuesday 7 Apr 2020, 16:00 → 17:30 Europe/Rome

Seminario trasmesso in teleconferenza. (Dip. di Fisica - Edificio G. Marconi)

IL SEMINARIO SARA' TRASMESSO IN TELECONFERENZA.
Per seguire il seminario collegarsi al seguente link: 

meet.google.com/xvf-zchw-phc

The combination of the secular cooling of a heterogeneous and stratified mantle, and the astronomical tuning are inferred as the main controlling factors of plate tectonics. The Earth's rotation and the tidal despinning generate a torque acting on the lithosphere, producing a net westerly directed rotation of the lithosphere with respect to the underlying mantle. During the interseismic stage, a dilatational band forms in the brittle upper crust. The stretching is recovered during the coseismic stage when the fault hangingwall falls releasing its gravitational energy on a normal fault. On the contrary, for a thrust fault, during the interseismic stage an over compressed band forms above the brittle–ductile transition, which is opposingly dilated during the earthquake, delivering elastic energy.

Video del seminario