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Acta Seismologica Sinica

, Volume 17, Issue 3, pp 272–281 | Cite as

3-D velocity structure in the central-eastern part of Qilianshan

  • Zhang Yuan-sheng 
  • Zhou Min-du 
  • Rong Dai-lu 
  • Zhang Li-guang 
  • Xu Zhong-qiu 
Article

Abstract

The 3-D velocity tomography image of the central-eastern part of Qilianshan is obtained by the joint inversion of 3-D velocity structure and focal parameters based on the S-P data of micro-earthquakes recorded by the digital seismic network set up for a Sino-French cooperation program since 1996. The inversed velocity structure does primarily reflect some important features of the deep structure in the region and provide the scientific background for the further study of active tectonic structure and the calculation of earthquake parameters.

Key words

central-eastern Qilianshan micro-earthquake observation 3-D velocity structure focal parameters joint inversion 

CLC number

P315.3+

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References

  1. GAO Er-gen, XU Guo-ming. 1996. A new kind of step by step iterative ray-tracing method [J]. Chinese J Geophys, 39(Suppl): 302–308 (in Chinese).Google Scholar
  2. Koch M. 1993a. Simultaneous inversion for 3-D crustal structure and hypocentres including direct, refracted and reflected phases—I. Development, validation and optimal regularization of the method [J]. Geophy J Int, 112: 385–412.CrossRefGoogle Scholar
  3. Koch M. 1993b. Simultaneous inversion for 3-D crustal structure and hypocentres including direct, refracted and reflected phases—II. Application to the northern Rhine Graben/Rhanish Massif Region, Germany [J]. Geophy J Int, 112: 413–428.CrossRefGoogle Scholar
  4. Koch M. 1993c. Simultaneous inversion for 3-D crustal structure and hypocentres including direct, refracted and reflected phases—III. Application to the southern Rhine Graben, Germany [J]. Geophy J Int, 112: 429–447.CrossRefGoogle Scholar
  5. LI Qing-he, ZHANG Yuan-sheng, TU Yi-min, et al. 1998. The combined interpretation of crustal velocity and electrical resistivity in Qilianshan Mountain-Hexi corridor region [J]. Chinese J Geophys, 41(2): 197–209 (in Chinese).Google Scholar
  6. Sambridge M. 1992. Genetic algorithms in seiemic waveform inversion [J]. Geophy J Int, 109: 323–342.CrossRefGoogle Scholar
  7. YANG Wen-cai. 1997. Theory and Methods of Geophysical Inversion [M]. Beijing: Geological Publishing House, 112–261 (in Chinese).Google Scholar
  8. ZHANG Yuan-sheng, LI Qing-he, XU Guo-ming. 1998. Combined inversion technique to study 3-D crustal velocity structure by using seismic wave travel-time and wave form (I)—Theory and method [J]. Northwestern Seismological Journal, 20(2): 8–15 (in Chinese).Google Scholar

Copyright information

© Acta Seismologica Sinica 2004

Authors and Affiliations

  • Zhang Yuan-sheng 
    • 1
  • Zhou Min-du 
    • 1
  • Rong Dai-lu 
    • 1
  • Zhang Li-guang 
    • 1
  • Xu Zhong-qiu 
    • 2
  1. 1.Lanzhou Institute of SeismologyChina Earthquake AdministrationLanzhouChina
  2. 2.Earthquake Administration of Lanzhou CityLanzhouChina

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