Analytical study of the reflection and transmission coefficient of the submarine interface

doi:10.1007/s11600-018-0153-y

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Analytical study of the reflection and transmission coefficient of the submarine interface
	Zhang, Guangli 1,2; Hao, Chongtao 1; Yao, Chen 1
刊名	ACTA GEOPHYSICA
	2018-08-01
卷号	66 期号:4 页码:449-460
关键词	Submarine interface Reflection and transmission coefficient Stiff and soft seabed layer Critical angle Analytical study
ISSN号	1895-7455
DOI	10.1007/s11600-018-0153-y
文献子类	Article
英文摘要	The analytical study of the reflection and transmission coefficient of the seafloor interface is essential for the characterization of the ocean bottom in marine seismic exploration. Based on the boundary conditions of the seafloor interface, the analytical expression of the reflection and transmission coefficient at the submarine interface is derived in this study by using the steady-state wave solution of the elastic wave in a homogeneous, isotropic medium. With this analytical expression, the characteristics of the reflection and transmission coefficient at the submarine interface are analysed and discussed using critical angles. The results show that the change in the reflection and transmission coefficient with the incidence angle presents a "segmented" characteristic, in which the critical angle is the dividing point. The amplitude value and phase angle of the coefficient at the submarine interface change dramatically at the critical angle, which is related to the P- and S-wave velocities in the seabed layer. Compared with the stiff seabed, the soft seabed has a larger P-wave critical angle and an absence of the converted S-wave critical angle, owing to the low P- and S-wave velocities in the solid seabed layer. By analysing and discussing the special changes that occur in the coefficient values at the critical angle, the reflection and transmission characteristics of the different incident angles are obtained. Synthetic models of both stiff and soft seafloors are provided in this study to verify the analytical results. Finally, we compared our synthetic results with real data from the Gulf of Mexico, which enabled the validation of our conclusions.
WOS关键词	AVO INVERSION ; SEA-FLOOR ; ZOEPPRITZ EQUATIONS ; WAVE REFLECTION ; ELASTIC-MEDIA ; OCEAN-BOTTOM ; SIMULATION ; PARAMETERS ; ANISOTROPY ; SEDIMENTS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SPRINGER INTERNATIONAL PUBLISHING AG
WOS记录号	WOS:000440706400002
资助机构	National Natural Science Foundation of China(41590862 ; National Natural Science Foundation of China(41590862 ; independent technology development projects from the Institute of Geology, China Earthquake Administration ; independent technology development projects from the Institute of Geology, China Earthquake Administration ; 41174045) ; 41174045) ; National Natural Science Foundation of China(41590862 ; National Natural Science Foundation of China(41590862 ; independent technology development projects from the Institute of Geology, China Earthquake Administration ; independent technology development projects from the Institute of Geology, China Earthquake Administration ; 41174045) ; 41174045) ; National Natural Science Foundation of China(41590862 ; National Natural Science Foundation of China(41590862 ; independent technology development projects from the Institute of Geology, China Earthquake Administration ; independent technology development projects from the Institute of Geology, China Earthquake Administration ; 41174045) ; 41174045) ; National Natural Science Foundation of China(41590862 ; National Natural Science Foundation of China(41590862 ; independent technology development projects from the Institute of Geology, China Earthquake Administration ; independent technology development projects from the Institute of Geology, China Earthquake Administration ; 41174045) ; 41174045)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88152]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Zhang, Guangli
作者单位	1.Earthquake Adm China, Inst Geol, State Key Lab Earthquake Dynam, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 10029, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Guangli,Hao, Chongtao,Yao, Chen. Analytical study of the reflection and transmission coefficient of the submarine interface[J]. ACTA GEOPHYSICA,2018,66(4):449-460.
APA	Zhang, Guangli,Hao, Chongtao,&Yao, Chen.(2018).Analytical study of the reflection and transmission coefficient of the submarine interface.ACTA GEOPHYSICA,66(4),449-460.
MLA	Zhang, Guangli,et al."Analytical study of the reflection and transmission coefficient of the submarine interface".ACTA GEOPHYSICA 66.4(2018):449-460.