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Abstract We construct a new shear velocity model for the San Gabriel, Chino and San Bernardino basins located in the northern Los Angeles area using ambient noise correlation between dense linear nodal arrays, broadband stations, and accelerometers. We observe Rayleigh and Love waves in the correlation of vertical (Z) and transverse (T) components, respectively. By combining Hilbert and Wavelet transforms, we obtain the separated fundamental and first higher mode of the Rayleigh wave dispersion curves based on their distinct particle motion polarization. Basin depths constrained by receiver functions, gravity, and borehole data are incorporated into the prior model. Our 3D shear wave velocity model covers the upper 3–5 km of the crust in the San Gabriel, Chino and San Bernardino basin area. The Vs model is in agreement with the geological and geophysical cross‐sections from other studies, but discrepancies exist between our model and a Southern California Earthquake Center community velocity model. Our shear wave velocity model shows good consistency with the CVMS 4.26 in the San Gabriel basin, but predicts a deeper and slower sedimentary basin in the San Bernardino and Chino basins than the community model.
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Shear Wave Velocities in the San Gabriel and San Bernardino Basins, California
This dataset contains the shear wave velocity model of northern Los Angeles basins, including San Gabriel, Chino, Raymond, and San Bernardino basin. The model domain is a rectangular box, with longitude between 116.90°W and 118.37°W, latitude between 33.90°N and 34.25°N. Details of the files see README file.
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- Award ID(s):
- 2317154
- PAR ID:
- 10427034
- Publisher / Repository:
- CaltechDATA
- Date Published:
- Edition / Version:
- 1.0
- Subject(s) / Keyword(s):
- Shear wave velocity model San Gabriel basin San Bernardino basin seismology
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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