气候变化领域集成服务门户(CCPortal): The origin of secondary microseism Love waves

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DOI	10.1073/pnas.2013806117
	The origin of secondary microseism Love waves
	Gualtieri L.; Bachmann E.; Simons F.J.; Tromp J.
发表日期	2020
ISSN	0027-8424
起始页码	29504
结束页码	29511
卷号	117 期号:47
英文摘要	The interaction of ocean surface waves produces pressure fluctuations at the seafloor capable of generating seismic waves in the solid Earth. The accepted mechanism satisfactorily explains secondary microseisms of the Rayleigh type, but it does not justify the presence of transversely polarized Love waves, nevertheless widely observed. An explanation for two-thirds of the worldwide ambient wave field has been wanting for over a century. Using numerical simulations of global-scale seismic wave propagation at unprecedented high frequency, here we explain the origin of secondary microseism Love waves. A small fraction of those is generated by boundary force-splitting at bathymetric inclines, but the majority is generated by the interaction of the seismic wave field with three-dimensional heterogeneity within the Earth.We present evidence for an ergodic model that explains observed seismic wave partitioning, a requirement for full-wave field ambient-noise tomography to account for realistic source distributions. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Computational seismology; Love waves; Ocean-solid Earth interaction; Seismic ambient noise
语种	英语
scopus关键词	article; computer simulation; human; human experiment; noise; sea; tomography
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160717
作者单位	Gualtieri, L., Department of Geophysics, Stanford University, Stanford, CA 94305-2215, United States; Bachmann, E., Department of Geosciences, Princeton University, Princeton, NJ 08544, United States; Simons, F.J., Department of Geosciences, Princeton University, Princeton, NJ 08544, United States; Tromp, J., Department of Geosciences, Princeton University, Princeton, NJ 08544, United States, Program in Applied & Computational Mathematics, Princeton University, Princeton, NJ 08544, United States
推荐引用方式 GB/T 7714	Gualtieri L.,Bachmann E.,Simons F.J.,et al. The origin of secondary microseism Love waves[J],2020,117(47).
APA	Gualtieri L.,Bachmann E.,Simons F.J.,&Tromp J..(2020).The origin of secondary microseism Love waves.Proceedings of the National Academy of Sciences of the United States of America,117(47).
MLA	Gualtieri L.,et al."The origin of secondary microseism Love waves".Proceedings of the National Academy of Sciences of the United States of America 117.47(2020).