Surface wave tomography of China from ambient seismic noise correlation
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- Sihua Zheng
- Institute of Earthquake Science China Earthquake Administration No. 63, Fuxing Avenue, Beijing 100036 China
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- Xinlei Sun
- Department of Geology University of Illinois 1301 West Green Street, 245 NHB, Urbana Illinois 61891 USA
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- Xiaodong Song
- Department of Geology University of Illinois 1301 West Green Street, 245 NHB, Urbana Illinois 61891 USA
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- Yingjie Yang
- Department of Physics University of Colorado at Boulder Campus Box 390, Boulder Colorado 80309 USA
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- Michael H. Ritzwoller
- Department of Physics University of Colorado at Boulder Campus Box 390, Boulder Colorado 80309 USA
書誌事項
- 公開日
- 2008-05
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2008gc001981
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>We perform ambient noise tomography of China using 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 Rayleigh wave group velocity dispersion measurements using a frequency‐time analysis method and invert for Rayleigh wave group velocity maps for periods from 8 s to 60 s. The tomographic maps display significant features that correlate with surface geology. Major basins, including Tarim, Junggar, Qadaim, Sichuan, Bohai‐Wan, and Songliao, are all well delineated by slow group velocities at shorter periods (10 to 20 s). The overall trend of crustal thickening from east to west is well represented by group velocity decreases from east to west at periods around 30 s.</jats:p>
収録刊行物
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- Geochemistry, Geophysics, Geosystems
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Geochemistry, Geophysics, Geosystems 9 (5), Q05020-, 2008-05
American Geophysical Union (AGU)