[1]ZHANG Qian,YIN Geng,WANG Yushi,et al.Near Earthquake Locating Based on Ray Tracing Method[J].Journal of Seismological Research,2017,40(02):203-210.
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
40
Number of periods:
2017 02
Page number:
203-210
Column:
Public date:
2017-04-23
- Title:
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Near Earthquake Locating Based on Ray Tracing Method
- Author(s):
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ZHANG Qian1; 2; YIN Geng2; WANG Yushi3; LIN Guoliang2
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(1. University of Science and Technology of China,Hefei 230026,Anhui,China)(2. Earthquake Administration of Yunnan Province,Kunming 650224,Yunnan,China)(3. Institute of Geophysics,CEA,Beijing 100081,China)
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- Keywords:
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earthquake locating; without velocity structure; ray theory; P wave polarization
- CLC:
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P315.3
- DOI:
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- Abstract:
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We demonstrate a ray tracing method for earthquake locating without prior velocity structure,which is based on ray theory. As the seismic ray focus on the hypocenter,first we divide the layer into sub-layers,and compute the velocities of the sub-layers and the location of the hypocenter by grid-search; then we increase the number of the sub-layers step by step,and repeat the process before correcting the hypocenter location; at last,we get a more accurate result. Simulative data have been used to test the method,the results show that,this method can be used for earthquake location in theory. We use this method to locate a natural earthquake. In contrast with the location result of Yunnan Seismic Network,we find the two results are close.