DOI: 10.1002/2015GL063637
论文题名: Estimate of Rayleigh-to-Love wave ratio in the secondary microseism by colocated ring laser and seismograph
作者: Tanimoto T. ; Hadziioannou C. ; Igel H. ; Wasserman J. ; Schreiber U. ; Gebauer A.
刊名: Geophysical Research Letters
ISSN: 0094-8726
EISSN: 1944-8457
出版年: 2015
卷: 42, 期: 8 起始页码: 2650
结束页码: 2655
语种: 英语
英文关键词: Love waves
; microseism
; Rayleigh waves
; rotation
Scopus关键词: Kinetic energy
; Kinetics
; Rayleigh waves
; Ring lasers
; Rotation
; Seismographs
; Surface waves
; Wave energy conversion
; Excitation mechanisms
; Love wave
; Microseism
; Spectral peak
; Surface wave amplitude
; Vertical component
; Vertical force
; Wave amplitudes
; Seismology
; amplitude
; estimation method
; kinetic energy
; Love wave
; seismograph
; wave modeling
; Germany
英文摘要: Using a colocated ring laser and an STS-2 seismograph, we estimate the ratio of Rayleigh-to-Love waves in the secondary microseism at Wettzell, Germany, for frequencies between 0.13 and 0.30 Hz. Rayleigh wave surface acceleration was derived from the vertical component of STS-2, and Love wave surface acceleration was derived from the ring laser. Surface wave amplitudes are comparable; near the spectral peak about 0.22 Hz, Rayleigh wave amplitudes are about 20% higher than Love wave amplitudes, but outside this range, Love wave amplitudes become higher. In terms of the kinetic energy, Rayleigh wave energy is about 20-35% smaller on average than Love wave energy. The observed secondary microseism at Wettzell thus consists of comparable Rayleigh and Love waves but contributions from Love waves are larger. This is surprising as the only known excitation mechanism for the secondary microseism, described by Longuet-Higgins (1950), is equivalent to a vertical force and should mostly excite Rayleigh waves. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929510692&doi=10.1002%2f2015GL063637&partnerID=40&md5=eff3b9834ea2b98a1475e91805dd618d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8342
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.,Hadziioannou C.,Igel H.,et al. Estimate of Rayleigh-to-Love wave ratio in the secondary microseism by colocated ring laser and seismograph[J]. Geophysical Research Letters,2015-01-01,42(8).