Variations in Aftershock Behavior Following a Large Underground Chemical Explosion in Alluvium
Date: 4/24/2019
Time: 06:00 PM
Room: Grand Ballroom
On 19 December 2018, a large chemical explosion (51 metric tons TNT equivalent at 300 m depth) was detonated at the Nevada National Security Site in alluvium as part of the second phase of the Source Physics Experiment (SPE). Unlike previous explosions in granite that were a part of SPE, this explosion was followed by a rich sequence of aftershocks with varying waveform features, suggesting a combination of rockfall, fracturing, overburden collapse, and other responses to changes in the in situ stresses. We report on observations of aftershock migration, energy release, decay rates, and other fundamental seismic parameters associated with this sequence.
Presenting Author: Ellen M. Syracuse
Authors
Ellen M Syracuse syracuse@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States Presenting Author
Corresponding Author
|
William S Phillips wsp@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Garrett G Euler ggeuler@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Charlotte A Rowe char@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Variations in Aftershock Behavior Following a Large Underground Chemical Explosion in Alluvium
Category
Explosion Seismology Applications