| Analysis on the master event method and precise location of 1997 Jiashi strong earthquake swarm in western China |
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| 作者姓名： | 周仕勇 许忠淮 韩京 许洪新 努尔尼沙 |
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| 作者单位： | Institute of Geophysics of China Seismological Bureau，Beijing 100081，China Seismological Bureau of Xinjiang，Urumqi 830011，China |
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| 基金项目： | the Chinese Joint Seismological Science Foundation;9691307-04-01; |
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| 摘 要： | IntroductionEarthquakelocationisoneoftheoldestinverseproblemsinseismology.Preciseearthquakelocationisthebasisoftheseismicresearch.Theprecisionoftheearthquakelocationdependsonmanyfactors,suchasthequalityofthestationnetwork,theprecisionoftheseismicwavearrivaltimemeasured,andtheknowledgeaboutthecrustalvelocitystructureandsoon.AccordingtotheresearchmadebyZhao(1983),thehorizontallocationerroroftheeanhquakelocatedbythetraditionalabsolutemethodinthecentralareaofNorthChinaisabouttZkin,intheedgeregio…
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| 关 键 词： | Jiashi strong earthquake swarm master event location |
| 收稿时间： | 5 November 1998 |
| 修稿时间： | 11 January 1999 |
Analysis on the master event method and precise location of 1997 Jiashi strong earthquake swarm in western China |
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| SHI-YONG ZHOU,ZHONG-HUAI XU,JING HAN,HONG-XIN XU,NUERNISHA.Analysis on the master event method and precise location of 1997 Jiashi strong earthquake swarm in western China[J].Acta Seismologica Sinica(English Edition),1999,12(3):285-291. |
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| Authors: | SHI-YONG ZHOU ZHONG-HUAI XU JING HAN HONG-XIN XU NUERNISHA |
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| Institution: | Institute of Geophysics of China Seismological Bureau, Beijing 100081, China;Seismological Bureau of Xinjiang,ürümqi 830011, China |
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| Abstract: | Master event location method was described in detail in this paper. Some problems in the application of master event method
have been analyzed and some improvements of the method have been made. As compared the location results of M
S≥3.0 earthquakes of Jiashi swarm obtained by using this method with that by the traditional absolute method, the result obtained
by using the master event method shows more reasonable and more consistent with that from the focal mechanism solutions. After
relocation, we can see, the epicenters of M≥5.0 earthquakes show an echelon-type alignment along NNW-SSE direction, and all earthquakes concentrate nearly in a volume
region about 30 km (N-S)×15 km (E-W)×15 km (U-D). Earthquake focal depths are mainly in the range of 15–28 km.
Contribution No. 99FE2014, Institute of Geophysics, China Seismological Bureau.
This subject is sponsored by the Chinese Joint Seismological Science Foundation (9691307-04-01) and the Seismic Monitor Department
of the Seismological Bureau of Xinjiang, China. |
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| Keywords: | Jiashi strong earthquake swarm master event location |
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