Modeling the Ground Motions From Chemical Explosions in Proximity of a Fault
Description:
The Source Physics Experiment (SPE) is being conducted at Nevada National Security Site (NNSS) to study the ground motion generated by underground chemical explosion sources in various geologies. Of particular interest is the understanding of mechanisms of shear wave generation observed during underground explosions, which may look like natural seismicity in the far field. SPE-III will be conducted in proximity to a fault. We have conducted numerical modeling of the ground motion from explosions at various depths to investigate a role the fault may play in the predicted ground motion. Various in-situ stress conditions were assumed at the fault as well as the fluid pressure which may affect the friction on the fault. A new constitutive model for porous saturated rock has been used which accounts for fluid pressure build up in a dynamic loading unloading cycle.
Session: Advancements in Forensic Seismology and Explosion Monitoring [Poster Session]
Type: Poster
Date: 5/2/2024
Presentation Time: 08:00 AM (local time)
Presenting Author: Oleg
Student Presenter: No
Invited Presentation:
Authors
Oleg Vorobiev
Presenting Author
Corresponding Author
vorobiev1@llnl.gov
Lawrence Livermore National Laboratory
Souheil Ezzedine
ezzedine1@llnl.gov
Lawrence Livermore National Laboratory
Modeling the Ground Motions From Chemical Explosions in Proximity of a Fault
Category
Advancements in Forensic Seismology and Explosion Monitoring