| 新疆巴楚和塔什库尔干地震台下方地壳结构研究 |
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| 引用本文： | 唐明帅,王海涛,罗炬,孔祥艳,杨峰.新疆巴楚和塔什库尔干地震台下方地壳结构研究[J].中国地震研究,2015,29(2):265-274. |
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| 作者姓名： | 唐明帅 王海涛 罗炬 孔祥艳 杨峰 |
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| 作者单位： | 新疆维吾尔自治区地震局,新疆 乌鲁木齐 830011;新疆维吾尔自治区地震局,新疆 乌鲁木齐 830011;新疆维吾尔自治区地震局,新疆 乌鲁木齐 830011;新疆维吾尔自治区地震局,新疆 乌鲁木齐 830011;新疆维吾尔自治区地震局,新疆 乌鲁木齐 830011 |
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| 基金项目： | This research is sponsored by the Seismic Networks Young Junior Training Project ( 20130216 ) and the Earthquake Science and Technology Spark Program from China Earthquake Administration (XH15046)． |
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| 摘 要： | Using the teleseismic waveform data recorded by the seismic station Bachu( hereafter referred to as station BCH) i n the Tarim Basin and the seismic station Taxkorgan(h ereafter referred to as station TAG) i n the west Kunlun Mountains for years,we applied the receiver function H-κ stacking method to study the crustal structure beneath stations BCH and TAG. The results showed that there are obvious differences in the crustal thickness beneath stations BCH and TAG,and the regional crustal thickness and terrain have a very good corresponding relationship. There are high crustal average V P/ V S values beneath the two stations. The crustal thickness is 44 km,and the crustal average wave velocity ratio is 1. 849 beneath station BCH. There is a sharp discontinuity in the middle of the crust beneath station BCH at a depth of 21 km. There is a low average P wave velocity and low V P/ V S from the surface to the discontinuity beneath station BCH.The depth of the discontinuity is consistent with the lower interface of the focal depth from accurate location in the Jiashi earthquake source area adjacent to station BCH; and may be the crustal brittle-ductile conversion boundary. The crustal thickness is 69 km,and the crustal average wave velocity ratio is 1. 847 beneath station TAG,a thicker crust and high V P/ V S may indicate that materials in the lower crustal are prone to plastic flow,which is responsible for the thickening of the crust.
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| 关 键 词： | Crustal thickness Poisson ratio Receiver function Brittle-ductile transition zone Xinjiang |
| 收稿时间： | 2013/12/31 0:00:00 |
Study on the Crustal Structure beneath Seismic Station Bachu and Taxkorgan in Xinjiang |
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| Tang Mingshuai,Wang Haitao,Luo Ju,Kong Xiangyan and Yang Feng.Study on the Crustal Structure beneath Seismic Station Bachu and Taxkorgan in Xinjiang[J].Earthquake Research in China,2015,29(2):265-274. |
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| Authors: | Tang Mingshuai Wang Haitao Luo Ju Kong Xiangyan and Yang Feng |
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| Institution: | Tang Mingshuai;Wang Haitao;Luo Ju;Kong Xiangyan;Yang Feng;Earthquake Administration of Xinjiang Uygur Autonomous Region; |
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| Abstract: | |
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| Keywords: | Crustal thickness Poisson ratio Receiver function Brittle-ductile transition zone Xinjiang |
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