Abstract
A detail three-dimensional P wave velocity structure of Beijing, Tianjin and Tangshan area (BTT area) was determined by inverting local earthquake data. In total 16 048 P wave first arrival times from 16048 shallow and mid-depth crustal earthquakes, which occurred in and around the BTT area from 1992 to 1999 were used. The first arrival times are recorded by Northern China United Telemetry Seismic Network and Yanqing-Huailai Digital Seismic Network. Hypocentral parameters of 1 132 earthquakes with magnitude M L=1.7–6.2 and the three-dimensional P wave velocity structure were obtained simultaneously. The inversion result reveals the complicated lateral heterogeneity of P wave velocity structure around BTT area. The tomographic images obtained are also found to explain other seismological observations well.
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References
Aki K, Christoffersson A, Husebye E S. 1977. Determination of the three dimensional seismic structure of the lithosphere [J]. J Geophys Res, 82: 277–296.
DING Zhi-feng. 1999. Regional Seismic Tomography: Theory and Applications [D]: [Ph.D. Thesis]. Beijing: Institute of Geophysics, CSB, 1–154 (in Chinese).
Eberhart-Phillips D. 1986. Three-dimensional velocity structure in north California Coast Ranges from inversion of local earthquakes arrival times [J]. Bull Seism Soc Amer, 76: 1 025–1 052.
GAO Wen-xue, MA Jin. 1993. Seismo-Geological Background and Earthquake Hazard in Beijing Area [M]. Beijing: Seismological Press, 1–452 (in Chinese).
JIN An-shu, LIU Fu-tain, SUN Yong-zhi. 1980. Three-dimensional P velocity structure of the crust and upper mantle under the Beijing region [J]. Acta Geophys Sinica, 23(2): 172–182 (in Chinese).
Kissling E. 1988. Geotomography with local earthquake data [J]. Rev Geophys, 26: 659–698.
Kissling E, Ellsworth W L, Eberhart-Phillips D, et al. 1994. Initial reference models in local earthquake tomography [J]. J Geophys Res, 99: 19 635–19 646.
LIU Fu-tian, QU Ke-xin, WU Hua, et al. 1986. Seismic tomography of North China region [J]. Acta Geophys Sinica, 29(5): 442–449 (in Chinese).
Michael A J. 1988. Effects of three-dimensional velocity structure on the seismicity of the 1984 Morgan Hill. California, aftershock sequence [J]. Bull Seism Soc Amer, 78: 1 199–1 221.
Shedlock K M, Roceker S W. 1987. Elastic wave velocity structure under the crust and upper mantle beneath the North China [J]. J Geophys Res, 92: 9 327–9 350.
SUN Ruo-mei, LIU Fu-tian. 1995. Crust structure and strong earthquake in Beijing, Tianjin, Tangshan area: I. P wave velocity structure [J]. Acta Geophys Sinica, 38(5): 599–607 (in Chinese).
Thurber C H. 1983. Earthquake location and three-dimensional crustal structure in the Coyote Lake area, central California [J]. J Geophys Res, 88: 8 226–8 236.
Um J, Thurber C H. 1987. A fast algorithm for two-point seismic ray tracing [J]. Bull Seism Soc Amer, 77: 972–986.
ZHANG Hong-zhi, SUN Jing-hua. 1993. The location ability of North China United Telemetry Seismic Network s [J]. Seismological and Geomagnetic Observation and Research, 14(4): 21–25 (in Chinese).
ZHU Lu-pei, ZENG Rong-sheng, LIU Fu-tian. 1990. 3-D P wave velocity structure under the Beijing network area [J]. Acta Geophys Sinica, 33(3): 267–277 (in Chinese).
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Foundation item: Climbing Project “Continental Dynamics of East Asia” (95-S-05) from Ministry of Science and Technology, P. R. China.
Contribution No. 03FE1001, Institute of Geophysics, China Seismological Bureau.
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Yu, Xw., Chen, Yt. & Wang, Pd. Three-dimensional P velocity structure in Beijing area. Acta Seimol. Sin. 16, 1–15 (2003). https://doi.org/10.1007/s11589-003-0001-1
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DOI: https://doi.org/10.1007/s11589-003-0001-1
Key words
- tomography
- three-dimensional velocity structure
- seismic activity
- high velocity anomalies
- low velocity anomalies
- lateral heterogeneity