| 腾冲火山区地壳结构的人工地震探测 |
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| 引用本文： | 王椿镛,皇甫岗,万登堡,刘祖荫,秦嘉政,楼海,吴建平.腾冲火山区地壳结构的人工地震探测[J].地震研究,2000,23(2):148-156. |
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| 作者姓名： | 王椿镛 皇甫岗 万登堡 刘祖荫 秦嘉政 楼海 吴建平 |
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| 作者单位： | 1. 中国地震局地球物理研究所,北京,100081
2. 云南省地震局,昆明,650041 |
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| 基金项目： | 中国科学院资助项目，地震科学联合基金，云南省科技计划，D0407，199119，，，， |
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| 摘 要： | 介绍在腾冲地区完成的由一条近南北方向纵测线和两条近东西向的非纵测线组成的人工地震测深工程以及对纵测线资料解释的初步结果。上地壳的平均速度为５．９ｋｍ／ｓ，顶界面深度为２３ｋｍ左右；中地壳可分为２层，平均速度为６．１７ｋｍ／ｓ；纵线的平均地壳厚度为４０ｋｍ。在团田至腾冲之间的基底速度相当低（５．８０ｋｍ／ｓ）。在腾冲与固东之间的中地壳界面有局部上拱现象。局部地区的地壳速度偏低以及壳低界面上拱可能与岩
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| 关 键 词： | 人工地震探测 地壳结构 腾冲火山区 断层 |
DEEP SEISMIC SOUNDING OF CRUSTAL STRUCTURE IN TENGCHONG VOLCANIC AREA |
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| Wang Chunyong,Huangfu Gang,Wan Dengbao,Liu Zuyin,Qing Jiazheng,Lou Hai,Wu Jianpin.DEEP SEISMIC SOUNDING OF CRUSTAL STRUCTURE IN TENGCHONG VOLCANIC AREA[J].Journal of Seismological Research,2000,23(2):148-156. |
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| Authors: | Wang Chunyong Huangfu Gang Wan Dengbao Liu Zuyin Qing Jiazheng Lou Hai Wu Jianpin |
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| Abstract: | A project of deep seismic sounding,which consists of an in line profile with SN orientation and two off line profiles with EW orientation in Tengchong and its vicinity,and the preliminary results of crustal structure along the in line profile are described in this paper In upper crust,the average velocity is 5 94km/s,and the bottom depth is about 12km In lower crust,the average velocity is 6 67km/s,and the top depth is about 23km There is an average velocity is 6 17km/s in mid crust,which can be divided into 2 layers Crustal thickness along the in line profile is 40km on an average The basement in the region between Tuantian and Tengchong has a quite lower velocity(5 80km/s) Local arch interfaces in mid crust exist in the region between Tengchong and Gudong The lower crustal velocity and the intracrustal arch interfaces in local region are probably related to magma activity in the Tengchong volcanic area |
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| Keywords: | Tengchong volcanic area deep seismic sounding crustal structure |
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