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Seismic Source Parameters and Scaling Relations for Microseismic Lower-Yield Military Explosive Events

Description: 

The ability to determine and assign a magnitude to a small microseismic lower-yield military explosive event can be advantageous in characterizing its source. This process involves the determination of its seismic moment which can be accomplished by modeling the ground motion’s spectrum. However, the question remains as to whether the models available for earthquake simulation apply to much smaller ground motions from sources other than earthquakes. In this study, Brune source models are fitted to actual small ground motions from military explosive events using the Stochastic Method Model and the source parameters are determined for these events. The seismic waves generated by these lower-yield military explosions were recorded by a local network of seismometers/geophones for twenty-one events collected at two different distances. In addition to acquiring the source parameters for these ground motions, an investigation into their scalability and compliance with self-similarity laws for earthquake source relations is also investigated.

Session: Advancements in Forensic Seismology and Explosion Monitoring - II

Type: Oral

Date: 5/2/2024

Presentation Time: 11:00 AM (local time)

Presenting Author: Troy

Student Presenter: No

Invited Presentation: 

Authors