Tomography of Southern California Via Bayesian Joint Inversion of Rayleigh Wave Ellipticity and Phase Velocity From Ambient Noise Cross‐Correlations
نویسندگان
چکیده
منابع مشابه
Joint inversion of Rayleigh wave phase velocity and ellipticity using USArray: Constraining velocity and density structure in the upper crust
[1] Rayleigh wave ellipticity, or H/V ratio, observed on the surface is particularly sensitive to shallow earth structure. In this study, we jointly invert measurements of Rayleigh wave H/V ratio and phase velocity between 24–100 and 8–100 sec period, respectively, for crust and upper mantle structure beneath more than 1000 USArray stations covering the western United States. Upper crustal stru...
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We present a method for joint inversion of teleseismic and ambient noise Rayleigh wave data for phase velocity maps from 18 to 50 s period. We adapt the two-plane wave method for teleseismic data to include ambient noise phase data. We apply themethod to data from Iceland’s ICEMELT and HOTSPOT arrays. Checkerboard tests show that the joint inversion improves phase velocity model recovery over m...
متن کاملAmbient Noise Rayleigh Wave Tomography of New Zealand
Fan-Chi Lin1, Michael H. Ritzwoller1, John Townend2, Stephen Bannister3 and Martha K. Savage2 1Center for Imaging the Earth’s Interior, Department of Physics, University of Colorado at Boulder, Boulder, CO 80309-0390, USA. E-mail: [email protected] 2Institute of Geophysics, School of Geography, Environment, and Earth Sciences, Victoria University of Wellington, PO Box 600, Wellington 6040,...
متن کاملSurface wave tomography of the western United States from ambient seismic noise: Rayleigh wave group velocity maps
[1] We have applied ambient noise surface wave tomography to data that have emerged continuously from the EarthScope USArray Transportable Array (TA) between October 2004 and January 2007. Estimated Green’s functions result by cross-correlating noise records between every station-pair in the network. The 340 stations yield a total of more than 55,000 interstation paths. Within the 5to 50-s peri...
متن کاملRayleigh-Wave H/V via Noise Cross Correlation in Southern California
We study the crustal structure of southern California by inverting horizontal-to-vertical (H/V) amplitudes of Rayleigh waves observed in noise cross-correlation signals. This study constitutes a useful addition to traditional phase-velocity-based tomographic inversions due to the localized sensitivity of H/V measurements to the near surface of the measurement station site. The continuous data o...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 2018
ISSN: 2169-9313,2169-9356
DOI: 10.1029/2018jb016269