| DOI: | 10.1002/grl.50639
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| 论文题名: | Norwegian seiches from the giant 2011 Tohoku earthquake |
| 作者: | Bondevik S.; Gjevik B.; Sørensen M.B.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8831
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| EISSN: | 1944-8562
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| 出版年: | 2013
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| 卷: | 40, 期:13 | | 起始页码: | 3374
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| 结束页码: | 3378
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| 语种: | 英语
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| 英文关键词: | far-field seiching
; film clips
; Norwegian fjords
; numerical simulation
; Tohoku earthquake
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| Scopus关键词: | 2011 tohoku earthquakes
; Cell phone camera
; Earthquake motion
; Far-field
; Ground oscillations
; Norwegian fjords
; Shallow-water waves
; Tohoku earthquakes
; Computer simulation
; Shear waves
; Water waves
; Earthquakes
; amplitude
; calibration
; fjord
; numerical model
; ocean tide
; S-wave
; seiche
; storm surge
; surface wave
; Tohoku earthquake 2011
; wave modeling
; Norway
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| 英文摘要: | Seismic waves of the giant 2011 Tohoku earthquake triggered seiches in western Norwegian fjords. The seiching began a half hour after the earthquake origin time. The oscillations were noted by eyewitnesses and recorded by surveillance and cell phone cameras. The observations show maximum trough-to-peak amplitudes of 1.0-1.5 m and periods of 67-100 s. The water waves were not triggered from the arrival of the surface waves, the timing inferred for other seiches. Instead, the seiching began during the passage of horizontal S waves. We reproduced the S wave trigger by means of a shallow-water wave model calibrated previously to Norwegian tides and storm surges. The simulations, which used the observed earthquake motion as forcing, show water waves with periods and amplitudes similar to those in the film clips. However, the strongest horizontal ground oscillations with shorter periods (20-30 s) did not contribute much to the formation of the seiches. Key Points Norwegian fjords seiched in response to the 2011 Tohoku earthquake The water waves in film clips resemble those simulated numerically The seiching was triggered from the arrival of S waves ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880783294&doi=10.1002%2fgrl.50639&partnerID=40&md5=a2f7807da680036129942f1575ab81b3
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6095
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Faculty of Engineering and Science, Sogn Og Fjordane University College, P.O. Box 133, N-6851 Sogndal, Norway
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| Recommended Citation: | |
Bondevik S.,Gjevik B.,Sørensen M.B.. Norwegian seiches from the giant 2011 Tohoku earthquake[J]. Geophysical Research Letters,2013-01-01,40(13).
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