2009 Fiscal Year Final Research Report
Study for mobile ocean bottom broadband seismic observation of the next generation
| Project/Area Number |
19340121
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
SHIOBARA Hajime The University of Tokyo, 地震研究所, 准教授 (60211950)
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| Co-Investigator(Renkei-kenkyūsha) |
KANAZAWA Toshihiko 東京大学, 地震研究所, 教授 (30114698)
SHINOHARA Masanao 東京大学, 地震研究所, 准教授 (90242172)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 観測手法 / 深海環境 / 地震 / 地球観測 / 海底地震計 / 広帯域地震観測 |
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| Research Abstract |
We have already developed the mobile broadband ocean bottom seismometer (BBOBS), and many practical observations and the results have been achieved. But, the evaluation of the data shows that the noise level of horizontal components those are important in data analyses is rather high. To clear this problem, one idea of observation without effects of the bottom current is the use of small and low profile broadband sensor that enables to intrude into the sediment. We have developed the new sensor and performed several test observations. The results prove that this way of deploying the sensor unit can obtain seismic data like as land observatories.
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