2009 Fiscal Year Final Research Report

Study for mobile ocean bottom broadband seismic observation of the next generation

Research Project

Project/Area Number	19340121
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Research Field	Solid earth and planetary physics
Research Institution	The University of Tokyo
Principal Investigator	SHIOBARA Hajime The University of Tokyo, 地震研究所, 准教授 (60211950)
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)
Project Period (FY)	2007 – 2009
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
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.

(5 results)