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In Situ Velocity‐Strain Sensitivity Near the San Jacinto Fault Zone Analyzed Through Train Tremors

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2024GL110113· OSTI ID:2429096
 [1];  [2];  [3];  [2];  [2];  [2];  [4];  [4];  [4];  [5]
  1. Laboratory of Seismology and Physics of the Earth's Interior School of Earth and Space Sciences University of Science and Technology of China Hefei China, Mengcheng National Geophysical Observatory University of Science and Technology of China Mengcheng China, CNRS IRD ISTerre Université Grenoble Alpes Université Savoie Mont Blanc Université Gustave Eiffel Grenoble France
  2. CNRS IRD ISTerre Université Grenoble Alpes Université Savoie Mont Blanc Université Gustave Eiffel Grenoble France
  3. CNRS IRD ISTerre Université Grenoble Alpes Université Savoie Mont Blanc Université Gustave Eiffel Grenoble France, Department of Geophysics and Sedimentary Basins Geological Survey of Denmark and Greenland Copenhagen Denmark
  4. Institute of Geophysics and Planetary Physics University of California, San Diego La Jolla CA USA
  5. Department of Earth Sciences and Southern California Earthquake Center University of Southern California Los Angeles CA USA
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Abstract

We utilize train tremors as P‐wave seismic sources to investigate velocity‐strain sensitivity near the San Jacinto Fault Zone. A dense nodal array deployed at the Piñon Flat Observatory is used to detect and identify repeating train energy emitted from a railway in the Coachella valley. We construct P‐wave correlation functions across the fault zone and estimate the spatially averaged dt / t versus strain sensitivity to be 6.25 × 10 4 . Through numerical simulations, we explore how the sensitivity decays exponentially with depth. The optimal solution reveals a subsurface sensitivity of 1.2 × 10 5 and a depth decay rate of 0.05 km −1 . This sensitivity aligns with previous findings but is toward the higher end, likely due to the fractured fault‐zone rocks. The depth decay rate, previously unreported, is notably smaller than assumed in empirical models. This raises the necessity of further investigations of this parameter, which is crucial to study stress and velocity variations at seismogenic depth.

Research Organization:
Univ. of Southern California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
SC0016520
OSTI ID:
2429096
Alternate ID(s):
OSTI ID: 2538712
OSTI ID: 2577994
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 15 Vol. 51; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

References (44)

Seismic velocity changes caused by the Earth tide: Ambient noise correlation analyses of small-array data journal September 2014
Passive image interferometry for monitoring crustal changes with ambient seismic noise journal September 2011
Environmental seismology: What can we learn on earth surface processes with ambient noise? journal May 2015
Long-term observation of in situ seismic velocity and attenuation: IN SITU SEISMIC VELOCITY AND ATTENUATION MEASUREMENT journal June 2003
A year of microseisms in southern California journal January 2007
Continuous subsurface velocity measurement with coda wave interferometry journal December 2008
A model for seasonal changes in GPS positions and seismic wave speeds due to thermoelastic and hydrologic variations journal January 2011
Tracking Groundwater Levels Using the Ambient Seismic Field journal July 2018
High Temporal Resolution Monitoring of Small Variations in Crustal Strain by Dense Seismic Arrays journal January 2019
On the Nature of Higher‐Order Ambient Seismic Field Correlations journal September 2018
Three‐Dimensional Basin and Fault Structure From a Detailed Seismic Velocity Model of Coachella Valley, Southern California journal May 2019
Diurnal and Semidiurnal P‐ and S‐Wave Velocity Changes Measured Using an Airgun Source journal January 2020
Monitoring Seismic Velocity Changes Across the San Jacinto Fault Using Train‐Generated Seismic Tremors journal September 2022
Interaction of Air Pressure and Groundwater as Main Cause of Sub‐Daily Relative Seismic Velocity Changes journal April 2023
Daily and Seasonal Variations of Shallow Seismic Velocities in Southern California From Joint Analysis of H/V Ratios and Autocorrelations of Seismic Waveforms journal February 2023
Tidal Response of Seismic Wave Velocity at Shallow Crust in Japan journal May 2023
Precise measurement of seismic traveltimes ‐ Investigation of variation from tidal stress in shallow crust journal May 1983
Stress-induced velocity anisotropy in rock: An experimental study journal December 1969
Solid earth tide and observed change in the in situ seismic velocity journal March 1973
A precise, continuous measurement of seismic velocity for monitoring in situ stress journal January 1974
Precise continuous monitoring of seismic velocity variations and their possible connection to solid Earth tides journal November 1977
Systematic monitoring of millisecond travel time variations near Palmdale, California journal January 1979
Preseismic velocity changes observed from active source monitoring at the Parkfield SAFOD drill site journal July 2008
Locating a small change in a multiple scattering environment journal May 2010
Modelling P waves in seismic noise correlations: advancing fault monitoring using train traffic sources journal September 2021
Imaging shallow structures using interferometry of seismic body waves generated by train traffic journal December 2022
Spurious velocity changes caused by temporal variations in ambient noise frequency content journal May 2013
Sensitivity of coda waves to spatial variations of absorption and scattering: radiative transfer theory and 2-D examples journal March 2014
Sensitivity kernels for coda-wave interferometry and scattering tomography: theory and numerical evaluation in two-dimensional anisotropically scattering media journal December 2015
Modular and flexible spectral-element waveform modelling in two and three dimensions journal November 2018
On the measurement of seismic traveltime changes in the time–frequency domain with wavelet cross-spectrum analysis journal October 2019
Deep Residual Learning for Image Recognition conference June 2016
Postseismic Relaxation Along the San Andreas Fault at Parkfield from Continuous Seismological Observations journal September 2008
Mapping pressurized volcanic fluids from induced crustal seismic velocity drops journal July 2014
Velocity‐stack and slant‐stack stochastic inversion journal December 1985
Active Source Monitoring of Cross-Well Seismic Travel Time for Stress-Induced Changes journal February 2007
Monitoring Coseismic Temporal Changes of Shallow Material during Strong Ground Motion with Interferometry and Autocorrelation journal January 2019
Seismic Velocity Response to Atmospheric Pressure Using Time-Lapse Passive Seismic Interferometry journal July 2021
Humming Trains in Seismology: An Opportune Source for Probing the Shallow Crust journal January 2021
Variable Daily Autocorrelation Functions of High-Frequency Seismic Data on Mars journal December 2022
Thermoelastic strain in a half-space covered by unconsolidated material journal October 1986
Seismic interferometry in the presence of an isolated noise source journal December 2022
ANZA Regional Network dataset January 1982
Piñon Flats Observatory Array dataset January 2014

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