DOI: 10.1002/2016GL071133
论文题名: Estimate of Rayleigh-to-Love wave ratio in the secondary microseism by a small array at Piñon Flat observatory, California
作者: Tanimoto T. ; Lin C.-J. ; Hadziioannou C. ; Igel H. ; Vernon F.
刊名: Geophysical Research Letters
ISSN: 0094-8424
EISSN: 1944-8155
出版年: 2016
卷: 43, 期: 21 起始页码: 11173
结束页码: 11181
语种: 英语
英文关键词: Rayleigh-to-Love wave ratio in microseism
Scopus关键词: Rayleigh waves
; Seismographs
; Wave energy conversion
; California
; Equipartition of energy
; Love wave
; Low frequency range
; Rayleigh
; Vertical component
; Wavefields
; Seismology
英文摘要: Using closely located seismographs at Piñon Flat (PFO), California, for 1 year long record (2015), we estimated the Rayleigh-to-Love wave energy ratio in the secondary microseism (0.1–0.35 Hz) in four seasons. Rayleigh wave energy was estimated from a vertical component seismograph. Love wave energy was estimated from rotation seismograms that were derived from a small array at PFO. Derived ratios are 2–2.5, meaning that there is 2–2.5 times more Rayleigh wave energy than Love wave energy at PFO. In our previous study at Wettzell, Germany, this ratio was 0.9–1.0, indicating comparable energy between Rayleigh waves and Love waves. This difference suggests that the Rayleigh-to-Love wave ratios in the secondary microseism may differ greatly from region to region. It also implies that an assumption of the diffuse wavefield is not likely to be valid for this low frequency range as the equipartition of energy should make this ratio much closer. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84995899193&doi=10.1002%2f2016GL071133&partnerID=40&md5=083079b0f3b71d5c26e7d4950929749a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9387
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth Science and Earth Research Institute, University of California, Santa Barbara, CA, United States
Recommended Citation:
Tanimoto T.,Lin C.-J.,Hadziioannou C.,et al. Estimate of Rayleigh-to-Love wave ratio in the secondary microseism by a small array at Piñon Flat observatory, California[J]. Geophysical Research Letters,2016-01-01,43(21).