Crustal structure in the Binchuan basin of Yunnan constrained from receiver functions on a 2-D seismic dense array

• 作者: Xiaohuan Jiang Hongfeng Yang Wei Yang Weitao Wang
• 来源期刊: 地震学报（英文版）
• 年，卷（期）: 2020,（5）
• 页码范围: 264-272
• 页数: 9页
• 语种: 英文
• DOI: 10.29382/eqs-2020-0264-01

摘要

The Binchuan region is located in a seismically active area in northwestern Yunnan,China.The detailed crustal structure is important to understand the tectonic evolution and to assess the seismic hazard in the study area.With a 2-D dense array deployed in this region,we use teleseismic receiver function traditional imaging methods,including the H-κ and common-conversion-point stacking methods,to derive high-resolution crustal thickness and vp/vs ratio maps.Our results indicate that the crustal thickness increases from ～40 km to ～46 km in the south-north direction,and the average crustal thickness beneath the Binchuan basin is ～42 km.Our results agree with previous results but have higher resolution due to dense interstation spacing.