| Accurate Location of the Yao'an Earthquake Sequence and the Yongsheng Earthquake Sequence |
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| 作者姓名： | Wang Xinling |
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| 作者单位： | Wang Xinling 1)，Liu Jie 2)，Zhang Guomin 1) and Zhao Cuiping 3) 1) Institute of Earthquake Science，CEA，Beijing 100036，China 2) China Earthquake Networks Center，CEA，Beijing 100036，China 3) Institute of Geophysics，CEA，Beijing 100081，China |
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| 基金项目： | ThisprojectwassponsoredbytheNationalProgramonKeyBasicResearchAdvanceProjects(2002CCD01700),andScientificandTechnologicalProgramofEarthquakePredictionoftheTenth“Five-YearPlan”ofChina(2004BA601B01-04-03). |
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| 摘 要： | INTRODUCTIONEarthquake sequence is a series of centralized earthquake events in space-time after a largerearthquake.Since these earthquake events occur in a small space and are sequential in one specialtime,their seismogenic structure,mediumcharacteristics and earthquake mechanisms must be similar.By studying one earthquake sequence,the seismic activitytrend after a large earthquake can beconjectured.Some characteristics of the earthquake source development process and physic states canal…
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Accurate Location of the Yao'an Earthquake Sequence and the Yongsheng Earthquake Sequence |
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| Wang Xinling.Accurate Location of the Yao''''an Earthquake Sequence and the Yongsheng Earthquake Sequence[J].Earthquake Research in China,2006,20(1):37-49. |
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| Authors: | Wang Xinling |
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| Institution: | Institute of Earthquake Science, CEA,Beijing 100036,China |
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| Abstract: | The Yao'an M_S6.5 earthquake occurred on Jan. 15, 2000 and the Yongsheng M_S6.0 earthquake occurred on Oct. 27, 2001 in Yunnan Province, China. They are both located in the middle of the Dian block. Their epicenters are close to each other, the tectonic and strain characters of the earthquakes were similar, and there were many aftershocks after the two main shocks. In order to further study the spatial-temporal distributions and fault rupture characters of the main shocks and aftershocks, the latter are located using the Geiger earthquake location algorithm (Geiger) and the double difference earthquake location algorithm (DD) based on the seismic phase data of the two earthquake sequences. They were recorded by two Near Source Digital Seismic Networks (YNSSN and YSNSSN) deployed by the Yunnan Seismological Bureau (YNSB). Then, two main shock parameters were relocated using DD based on the data of larger magnitude aftershocks and the two main shocks that were recorded by the Kunming Regional Digital Seismic Network (KMSN). Combining the spatial-temporal distributions of the two earthquake sequences, the tectonic and strain characters of earthquakes, the rupture processes of the two aftershock sequences along faults are analyzed and discussed contrastively. |
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| Keywords: | DD Earthquake sequence Fault Seismic energy |
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