文章基本信息

标题：Effects of shallow-layer reverberation on measurement of teleseismic P-wave travel times for ocean bottom seismograph data
本地全文：下载
作者：Masayuki Obayashi ; Yasushi Ishihara ; Daisuke Suetsugu 等
期刊名称：Earth, Planets and Space
电子版ISSN：1880-5981
出版年度：2017
卷号：69
期号：1
页码：44-55
DOI：10.1186/s40623-017-0626-2
出版社：Springer Verlag
摘要：We conducted synthetic experiments to evaluate the effects of shallow-layer reverberation in oceanic regions on P-wave travel times measured by waveform cross-correlation. Time shift due to waveform distortion by the reverberation was estimated as a function of period. Reverberations in the crystalline crust advance the P-waves by a frequency-independent time shift of about 0.3 s in oceans. Sediment does not affect the time shifts in the mid-ocean regions, but effects as large as −0.8 s or more occur where sediment thickness is greater than 600 m for periods longer than 15 s. The water layer causes time delays (+0.3 s) in the relatively shallow ( Open image in new window Graphical abstract .
关键词：Crustal reverberation ; Waveform distortion ; Travel time correction ; Ocean bottom seismometer ; Mantle tomography