接收函数的H-k方法及其应用  

H-k Scanning Method of Receiver Functions and its Application

作　　者：王心宇[1] 王有学[1] 熊彬[1] 蒋婵君[1] 张琪[1] 曾成[1] 胡锦峰 WANG Xin-yu, WANG You-xue, XIONG Bin, JIANG Chan-jun, ZHANG Qi, ZENG Cheng, HU Jin-feng(School of Earth Sciences, Guilin University of Technology, Guilin 541006, Chin)

机构地区：[1]桂林理工大学地球科学学院,广西桂林541006

出　　处：《CT理论与应用研究（中英文）》2018年第2期187-196,共10页Computerized Tomography Theory and Applications

基　　金：国家自然科学基金项目(41574039);广西自然科学基金重点基金项目(2016GXNSFDA380014)

摘　　要：接收函数的H-k方法是研究地球内部结构的重要方法,由于接收函数不依赖于震源参数,可以更为精确地确定观测台站下方的地壳结构;同时H-k方法简单明了,可以利用深度-波速比扫描同时获取台站下方的地壳厚度及地壳内部的波速比或泊松比。本文利用H-k方法,对桂东北地区的宽频带地震流动台网观测数据的地震数据进行应用,结果表明该区的地壳厚度变化大(28~34 km),而且地壳内部的波速比(1.801~1.897)或泊松比(0.277~0.308)较高,与桂东北地区的基性、超基性岩大片出露的事实相吻合。H-k scanning method of receiver function is an important method to study the internal structure of the earth. Since the receiver function does not depend on the source parameters, it can be more accurate to determine the crustal structure below the station. H-k scanning method is simple and efficient, and can be used to obtain the crust thickness below the station and the VP/VS or Poisson’s ratio inside the crust. In this paper, the H-k method is applied to the observational seismic data from the portable broadband seismic array in northeastern Guangxi province. The results show that the thickness of the crust varies greatly in this area（28 - 34 km）, and the V_P/V_S（1.801 - 1.897） or Poisson’s ratio（0.277 - 0.308） in the crust is higher, which is consistent with the fact that the basic and ultrabasic rocks are exposed in the northeast of Guangxi province.

关 键 词：接收函数 H-k方法 地壳厚度 波速比 

分 类 号：O242[理学—计算数学] P315[理学—数学]