Preliminary Analysis of the 2024 Noto Peninsula Earthquake, Perspective From LANL's Geophysical Explosion Monitoring (GEM) Team
Description:
The magnitude 7.5 (Mw) earthquake that struck beneath Japan's Noto Peninsula on January 1, 2024 provided an opportunity to test Los Alamos National Laboratory's rapid analysis capability and ongoing R&D in a setting relevant to both nuclear safety and explosion monitoring. Our approach involved characterizing infrasound observations and utilizing numerical modeling to identify, associate, and localize the event's acoustic signatures with corresponding uncertainties. Our seismological analysis provided an opportunity to evaluate event relocation algorithms, automate picking of local to regional phases, investigate remote triggering in areas of interest, and analyze the non-linear soil response during strong ground motions. We also analyzed long-period (<0.05 Hz) seismological signals to estimate source time functions and conduct source inversion. Notably, data from a recent Science Monitoring and Reliable Telecommunications (SMART) cable deployment offshore of Sicily, featuring novel sensor types and data sources, captured strong signals from the event. By integrating these findings, we assessed the reliability of our geophysical data acquisition and storage systems, tested infrasound processing and modeling software, and evaluated seismological source characterization methods.
Session: The 2024 Magnitude 7.5 Earthquake and the Associated Earthquake Swarm Beneath the Noto Peninsula, Central Japan [Poster Session]
Type: Poster
Date: 5/3/2024
Presentation Time: 08:00 AM (local time)
Presenting Author: Jonas
Student Presenter: No
Invited Presentation:
Authors
Jonas Kintner Presenting Author Corresponding Author jonas.kintner@gmail.com Los Alamos National Laboratory |
Richard Alfaro-Diaz rad@lanl.gov Los Alamos National Laboratory |
Michael Begnaud mbegnaud@lanl.gov Los Alamos National Laboratory |
Jordan Bishop jwbishop@lanl.gov Los Alamos National Laboratory |
Phil Blom pblom@lanl.gov Los Alamos National Laboratory |
Christine Gammans cgammans@lanl.gov Los Alamos National Laboratory |
Yongsoo Park ysp@lanl.gov Los Alamos National Laboratory |
Ryan Modrak rmodrak@lanl.gov Los Alamos National Laboratory |
Peter Nelson pln@lanl.gov Los Alamos National Laboratory |
Charlotte Rowe char@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Brady Spears bspears@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Richard Stead stead@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Ellen M Syracuse syracuse@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Loïc Viens lviens@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Jeremy D Webster jwebster@lanl.gov Los Alamos National Laboratory, Los Alamos, New Mexico, United States |
Preliminary Analysis of the 2024 Noto Peninsula Earthquake, Perspective From LANL's Geophysical Explosion Monitoring (GEM) Team
Category
The 2024 Magnitude 7.5 Earthquake and the Associated Earthquake Swarm Beneath the Noto Peninsula, Central Japan