地震学报（英文版）2002，Vol.15Issue(3)：260-268,9.
Three-dimensional seismic velocity tomography of the upper crust in Tengchong volcanic area, Yunnan Province
Three-dimensional seismic velocity tomography of the upper crust in Tengchong volcanic area, Yunnan Province
摘要
Abstract
Based on data collected by deep seismic sounding carried out in 1999, a three-dimensional P wave velocity structure is determined with tomographic inversion. The tomographic result shows that there is a P wave low velocity zone (LVZ) in the upper crust beneath the Tengchong volcanic area. The LVZ is in the depth of 7~8 km and may be a small magma chamber or a partial melting body. The result also shows that the LVZ is in the northeastern side of the Rehai hydrothermal field, which is located in another LVZ near the surface. The shallow LVZ may represent a well-developed fracture zone. The strong hydrothermal activity in Rehai area can attribute to the existence of fractures between two LVZs. These fractures are the channels for going upwards of the deep hot fluid.关键词
Tengchong volcanic area/three-dimensional seismic tomography/magma chamberKey words
Tengchong volcanic area/three-dimensional seismic tomography/magma chamber分类
天文与地球科学引用本文复制引用
楼海,王椿镛,皇甫岗,秦嘉政..Three-dimensional seismic velocity tomography of the upper crust in Tengchong volcanic area, Yunnan Province[J].地震学报（英文版）,2002,15(3):260-268,9.基金项目
State Natural Science Foundation of China (D49974020), Joint Seismological Science Foundation of China (199110) and Project (95-11-01-06) during Ninth (Five-Year Plan( from China Seismological Bureau. （D49974020）
