Links between microseisms and extreme waves during typhoons

Li Ching Lin, Jiing-Yih Liou, Hwung Hweng Hwung, Frédéric Bouchette, Samuel Meulé

研究成果: Conference contribution

摘要

Ocean-Solid Earth coupling is the main forcing of generating seismic noise. It has been well known that seismic noise in the frequency band from 0.05 to about 1 Hz results from ocean waves. Components of noise spectrum, also called microseisms, are used to study extreme waves during typhoons. During the KUN-SHEN project (2011-2014), wave measurements have collected at the Cigu coast of Taiwan and compared with microseisms observations at inland seismometers from Broadband Array in Taiwan for Seismology (BATS) network. By comparing between background and storm induced microseisms, peaks in the noise spectrum can be divided in to two frequency bands. Comparison of microseism band between 0.1 and 0.2 Hz with buoys in the deep sea shows a strong correlation of seismic amplitude with storm generating waves, implying mat this energy portion could originates at the remote regions. Microseism amplitudes above 0.2 Hz show a good correlation with wind-generating waves near coasts. Findings also show mat maximum amplitudes of two different portions have the significant time lag, implying that source locations of generating microseisms can be identified. Results indicate that secondary microseisms observed at inland sites can be a potential tool of tracking typhoon motions and monitoring extreme waves near coasts in real time. Seismic noise in the l-10Hz band has rough correlation with wave activities in swash zone. Further examination is required to investigate those differences.

原文English
主出版物標題Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014
編輯Patrick Lynett
發行者American Society of Civil Engineers (ASCE)
ISBN(電子)9780989661126
出版狀態Published - 2014 一月 1
事件34th International Conference on Coastal Engineering, ICCE 2014 - Seoul, Korea, Republic of
持續時間: 2014 六月 152014 六月 20

出版系列

名字Proceedings of the Coastal Engineering Conference
2014-January
ISSN(列印)0161-3782

Other

Other34th International Conference on Coastal Engineering, ICCE 2014
國家Korea, Republic of
城市Seoul
期間14-06-1514-06-20

指紋

seismic noise
Coastal zones
coast
Frequency bands
Seismographs
solid Earth
wave runup
Seismology
ocean wave
seismology
wind wave
Buoys
typhoon
seismograph
Water waves
deep sea
Earth (planet)
ocean
monitoring
Monitoring

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

引用此文

Lin, L. C., Liou, J-Y., Hwung, H. H., Bouchette, F., & Meulé, S. (2014). Links between microseisms and extreme waves during typhoons. 於 P. Lynett (編輯), Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014 (Proceedings of the Coastal Engineering Conference; 卷 2014-January). American Society of Civil Engineers (ASCE).
Lin, Li Ching ; Liou, Jiing-Yih ; Hwung, Hwung Hweng ; Bouchette, Frédéric ; Meulé, Samuel. / Links between microseisms and extreme waves during typhoons. Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014. 編輯 / Patrick Lynett. American Society of Civil Engineers (ASCE), 2014. (Proceedings of the Coastal Engineering Conference).
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abstract = "Ocean-Solid Earth coupling is the main forcing of generating seismic noise. It has been well known that seismic noise in the frequency band from 0.05 to about 1 Hz results from ocean waves. Components of noise spectrum, also called microseisms, are used to study extreme waves during typhoons. During the KUN-SHEN project (2011-2014), wave measurements have collected at the Cigu coast of Taiwan and compared with microseisms observations at inland seismometers from Broadband Array in Taiwan for Seismology (BATS) network. By comparing between background and storm induced microseisms, peaks in the noise spectrum can be divided in to two frequency bands. Comparison of microseism band between 0.1 and 0.2 Hz with buoys in the deep sea shows a strong correlation of seismic amplitude with storm generating waves, implying mat this energy portion could originates at the remote regions. Microseism amplitudes above 0.2 Hz show a good correlation with wind-generating waves near coasts. Findings also show mat maximum amplitudes of two different portions have the significant time lag, implying that source locations of generating microseisms can be identified. Results indicate that secondary microseisms observed at inland sites can be a potential tool of tracking typhoon motions and monitoring extreme waves near coasts in real time. Seismic noise in the l-10Hz band has rough correlation with wave activities in swash zone. Further examination is required to investigate those differences.",
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Lin, LC, Liou, J-Y, Hwung, HH, Bouchette, F & Meulé, S 2014, Links between microseisms and extreme waves during typhoons. 於 P Lynett (編輯), Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014. Proceedings of the Coastal Engineering Conference, 卷 2014-January, American Society of Civil Engineers (ASCE), 34th International Conference on Coastal Engineering, ICCE 2014, Seoul, Korea, Republic of, 14-06-15.

Links between microseisms and extreme waves during typhoons. / Lin, Li Ching; Liou, Jiing-Yih; Hwung, Hwung Hweng; Bouchette, Frédéric; Meulé, Samuel.

Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014. 編輯 / Patrick Lynett. American Society of Civil Engineers (ASCE), 2014. (Proceedings of the Coastal Engineering Conference; 卷 2014-January).

研究成果: Conference contribution

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AB - Ocean-Solid Earth coupling is the main forcing of generating seismic noise. It has been well known that seismic noise in the frequency band from 0.05 to about 1 Hz results from ocean waves. Components of noise spectrum, also called microseisms, are used to study extreme waves during typhoons. During the KUN-SHEN project (2011-2014), wave measurements have collected at the Cigu coast of Taiwan and compared with microseisms observations at inland seismometers from Broadband Array in Taiwan for Seismology (BATS) network. By comparing between background and storm induced microseisms, peaks in the noise spectrum can be divided in to two frequency bands. Comparison of microseism band between 0.1 and 0.2 Hz with buoys in the deep sea shows a strong correlation of seismic amplitude with storm generating waves, implying mat this energy portion could originates at the remote regions. Microseism amplitudes above 0.2 Hz show a good correlation with wind-generating waves near coasts. Findings also show mat maximum amplitudes of two different portions have the significant time lag, implying that source locations of generating microseisms can be identified. Results indicate that secondary microseisms observed at inland sites can be a potential tool of tracking typhoon motions and monitoring extreme waves near coasts in real time. Seismic noise in the l-10Hz band has rough correlation with wave activities in swash zone. Further examination is required to investigate those differences.

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Lin LC, Liou J-Y, Hwung HH, Bouchette F, Meulé S. Links between microseisms and extreme waves during typhoons. 於 Lynett P, 編輯, Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014. American Society of Civil Engineers (ASCE). 2014. (Proceedings of the Coastal Engineering Conference).