热弹性P波在有流体夹层介质中的传播问题及其基本特征  

Propagation Problem and Basic Feature of Thermoelastic P Wave in Medium with Fluid Interlayer

作　　者：张艳芳[1] 张丽娟[1] 武晔[1] 张新超[1] 李瑞东[1] 胡顺田[1] 熊仲华[1] 赵永安[1] 

机构地区：[1]防灾科技学院,河北三河065201

出　　处：《地震》2016年第2期76-84,共9页Earthquake

基　　金：中国地震局教师科研基金(20090107)

摘　　要：本文作为基础理论研究,讨论了热弹性P波在有流体夹层介质中的传播问题。研究结果表明:热弹性波在流体夹层的传播中,不仅存在反射波、透射波,而且,还伴随有具有相同传播速度的温度波;且其反射系数、透射系数均为复数,并与介质的物性参数及夹层厚度有关。同时指出反射波、透射波的振幅、位相均受介质的物性参数及夹层厚度的影响。此外,还表明夹层中往返震荡的层间波是一系列正传热弹性波和反传热弹性波的叠加。As a basic theoretical research paper,thermoelastic P wave propagating in the medium with fluid mezzanine is studied.We found that there exist reflected wave,transmitted wave and the temperature wave with the same velocity.In this situation,reflection coefficient and transmission coefficient are all complex numers.They are related to physical parameters of the medium and the thickness of mezzanine.The amplitude and phase of the reflected wave and transmitted wave are influenced by the physical parameters of the medium and the thickness of mezzanine.In addition,interlayer wave bounding within the media is the overlay of a series of positive thermoelastic waves and negative thermoelastic waves.

关 键 词：热弹性波 流体夹层 反射 透射 

分 类 号：P315.7[天文地球—地震学]