globalchange  > 科学计划与规划
DOI: 10.1002/2014GL062347
论文题名:
Observation of deep water microseisms in the North Atlantic Ocean using tide modulations
作者: Beucler E.; Mocquet A.; Schimmel M.; Chevrot S.; Quillard O.; Vergne J.; Sylvander M.
刊名: Geophysical Research Letters
ISSN: 0094-9049
EISSN: 1944-8780
出版年: 2015
卷: 42, 期:2
起始页码: 316
结束页码: 322
语种: 英语
英文关键词: microseismic noise ; secondary peak ; surface waves ; tide modulation
Scopus关键词: Modulation ; Oceanography ; Power spectral density ; Seismology ; Spectral density ; Surface waves ; Tidal power ; Energy modulation ; Microseismic noise ; North Atlantic Ocean ; Secondary peak ; Seismic energy ; Seismic station ; Short durations ; Short periods ; Water waves ; deep water ; seismic noise ; seismic source ; seismic wave ; swell ; wave reflection ; Atlantic Ocean ; Atlantic Ocean (North)
英文摘要: Ocean activity produces continuous and ubiquitous seismic energy mostly in the 2-20 s period band, known as microseismic noise. Between 2 and 10 s period, secondary microseisms (SM) are generated by swell reflections close to the shores and/or by opposing swells in the deep ocean. However, unique conditions are required in order for surface waves generated by deep-ocean microseisms to be observed on land. By comparing short-duration power spectral densities at both Atlantic shoreline and inland seismic stations, we show that ocean tides strongly modulate the seismic energy in a wide period band except between 2.5 and 5 s. This tidal proxy reveals the existence of an ex situ short-period contribution of the SM peak. Comparison with swell spectra at surrounding buoys suggests that the largest part of this extra energy comes from deep ocean-generated microseisms. The energy modulation might be also used in numerical models of microseismic generation to constrain coastal reflection coefficients. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923566558&doi=10.1002%2f2014GL062347&partnerID=40&md5=0f39a3f2d510d08d64f102d3e41a101e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8665
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: Laboratoire de Planétologie et Géodynamique, CNRS UMR 6112, Université de Nantes, France

Recommended Citation:
Beucler E.,Mocquet A.,Schimmel M.,et al. Observation of deep water microseisms in the North Atlantic Ocean using tide modulations[J]. Geophysical Research Letters,2015-01-01,42(2).
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