利用海底地震仪数据分析台风对海底环境噪音的影响

doi:10.11978/j.issn.1009-5470.2009.06.061

Journal of Tropical Oceanography ›› 2009, Vol. 28 ›› Issue (6): 61-67.doi: 10.11978/j.issn.1009-5470.2009.06.061cstr: 32234.14.j.issn.1009-5470.2009.06.061

Special Issue: 海洋大数据及应用

• Marine geophysics • Previous Articles Next Articles

The impaction of typhoon on seafloor ambient noise by analyzing the OBS recording data

AO Wei1, 2 ZHAO Ming-hui1, RUAN Ai-guo3, QIU Xue-lin1

1. Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, CAS, Guangzhou 510301, China；2. Graduate University of CAS, Beijing 100049, China；3. The Second Institute of Oceanography, State Oceanic Administration, Hangzhou, 310012, China

Received:2008-09-04 Revised:2008-11-22 Online:2009-12-30 Published:2009-12-12
About author:敖威（1985—），男，湖北潜江人，在读硕士，主要从事海洋深部地球物理方向的研究工作。
Supported by:
科技部973项目（2007CB411701）；国家自然科学基金（40776025）；广东省自然科学基金（07004190）；广东省科技计划项目（2006B37201007）；国家海洋局海底科学重点实验室基金（klsg2007-03）

Abstract

Abstract:

Ocean Bottom Seismometer (OBS) deployed in the seafloor can record information of ocean ambient noise, and typhoon can generate elastic waves propagating through the seafloor directly or indirectly. These factors cause great changes on OBS recording data to some extent. The OBS data during the process of typhoon was analyzed, and the methods of optimum filter were used in order to separate signals. After those work, we found that wind wave and ground swell were well recorded by short-period OBSs for the first time, and a new mode which typhoon affected seafloor ambient noise was put forward. We get three preliminary conclusions from above analysis: (1) Wind wave and ground swell caused by typhoon have their own distinctive modes to affect seafloor ambient noise；（2）The range and extent of seafloor ambient noise are obviously different which have been strengthened by two above waves;（3）Short-period OBSs can clearly record the information of ground swell, whose dominating period is 6—8 seconds and its energy is generally steady (we call it “8-second phenomenon); These results will have great significance for the future research on marine seismology and other aspects of oceanography.

Key words: typhoon, ocean ambient noise, OBS, ground swell, 8-second phenomenon

AO Wei, ZHAO Ming-hui,RUAN Ai-guo,QIU Xue-lin. The impaction of typhoon on seafloor ambient noise by analyzing the OBS recording data[J].Journal of Tropical Oceanography, 2009, 28(6): 61-67.

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The impaction of typhoon on seafloor ambient noise by analyzing the OBS recording data

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