Talk: Asteroid Impacts, Tsunamis, and Mud Volcanos: Simulating Violent Processes in Geophysics
We have the pleasure to announce a guest lecture by Galen Gisler on this Friday, Feburary 29th. Dr. Gisler is a well-known researcher in studying fluids and violent physical processes in nature. He is currently working at the center of excellence "Physics of Geological Processes". For more info about Dr. Gisler's work, please visit the following web page: http://folk.uio.no/galeng/research.html
Total number of participants: 10
Number of different
nationalities represented: 2
Total number of speakers: 1
Total
number of talks: 1
Time
of the guest lecture: 13:15-14:00, Friday, Feburary 29th
Place: Bakrommet
Title: Asteroid Impacts, Tsunamis, and Mud
Volcanos: Simulating Violent Processes in
Geophysics
Abstract:
I present a
sample of calculations done with the multi-material hydrocode SAGE, a product of
Los Alamos National Laboratory and Science Applications International. SAGE has
an Eulerian finite-difference mesh with cell-by-cell adaptive mesh refinement,
and a Godunov scheme. Tabular equations of state and an elastic-plastic strength
model enable calculations involving a wide variety of physical materials in
solid, liquid, and gaseous phases. This code is proving useful for the study of
some violent processes in geophysics, including asteroid impacts, tsunamis, and
mud volcanos. I will illustrate some of the work we are doing by showing a
preliminary study of the distributions of ejecta in impacts as a function of the
parameters of the projectile, examine how the characteristics of
landslide-driven tsunamis depend on the nature of the slide, and show some
possible scenarios for mud-volcano studies.
