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Apparent Stress for the Mw 4.8 Whitehouse Station, NJ Earthquake from Coda Spectral Ratios

Description: 

We present stable, coda-derived spectral ratios of the recent Mw 4.8 Whitehouse Station earthquake using local and regional waveform data. The stability of the measurements are unprecedented and show an average corner frequency of 1.1-Hz and an apparent stress of ~1.0 MPa, under a Brune source model assumption. We used the Mw 3.7 aftershock several hours later as the eGf and find that this ratio, up to ~20-Hz, appears self-similar. We compare other events from the east coast and Canada which also exhibit high apparent stress, but in sharp contrast to events from other more active regions which have lower apparent stress and often are non-self-similar.

Session: The 5 April 2024 Magnitude 4.8 Whitehouse Station, New Jersey Earthquake - I

Type: Oral

Date: 5/3/2024

Presentation Time: 02:30 PM (local time)

Presenting Author: Kevin

Student Presenter: No

Invited Presentation: 

Authors