Surface wave tomography of the western United States from ambient seismic noise: Rayleigh wave group velocity maps
نویسندگان
چکیده
منابع مشابه
Surface 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...
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We perform ambient noise tomography of China using the data from the China National Seismic Network and surrounding global and regional stations. For most of the station pairs, we retrieve good Rayleigh waveforms from ambient noise correlations using 18-months of continuous data at all distance ranges across the entire region (over 5000 km) and for periods from 70 s down to about 8 s. We obtain...
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Cross-correlation of 1 month of ambient seismic noise recorded at USArray stations in California yields hundreds of short-period surface-wave group-speed measurements on interstation paths. We used these measurements to construct tomographic images of the principal geological units of California, with low-speed anomalies corresponding to the main sedimentary basins and high-speed anomalies corr...
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[1] Surface wave dispersion measurements from ambient seismic noise and array‐based measurements from teleseismic earthquakes observed with the EarthScope/USArray Transportable Array (TA) are inverted using a Monte Carlo method for a 3‐D VS model of the crust and uppermost mantle beneath the western United States. The combination of data from these methods produces exceptionally broadband dispe...
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J. Verbeke,1 L. Boschi,1,2 L. Stehly,3 E. Kissling1 and A. Michelini4 1Institute of Geophysics, ETH, Sonneggstr. 5, 8092 Zürich, Switzerland. E-mail: [email protected] 2Institute of Theoretical Physics, University of Zürich, Winterthurerstr. 190, 8057 Zürich, Switzerland 3Géoazur, Bât. 4, 250 rue Albert Einstein, Les Lucioles 1, Sophia Antipolis, 06560 Valbonne, France 4INGV, via di ...
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ژورنال
عنوان ژورنال: Geochemistry, Geophysics, Geosystems
سال: 2007
ISSN: 1525-2027
DOI: 10.1029/2007gc001655