Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1065
DC Field | Value | Language |
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dc.contributor.authorall | Shinohara, M.; Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | en |
dc.contributor.authorall | Araki, E.; Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | en |
dc.contributor.authorall | Kanazawa, T.; Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | en |
dc.contributor.authorall | Suyehiro, K.; Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | en |
dc.contributor.authorall | Mochizuki, M.; Institute of Industrial Science, University of Tokyo, Tokyo 153-8505, Japan | en |
dc.contributor.authorall | Yamada, T.; Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | en |
dc.contributor.authorall | Nakahigashi, K.; Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | en |
dc.contributor.authorall | Kaiho, Y.; Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | en |
dc.contributor.authorall | Fukao, Y.; Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | en |
dc.date.accessioned | 2006-03-22T17:40:35Z | en |
dc.date.available | 2006-03-22T17:40:35Z | en |
dc.date.issued | 2006-03-20 | en |
dc.identifier.uri | http://hdl.handle.net/2122/1065 | en |
dc.description.abstract | Seismological networks provide critical data for better understanding the dynamics of the Earth; however, a great limitation on existing networks is the uneven distribution of stations. In order to achieve a more uniform distribution of seismic stations, observatories must be constructed in marine areas. The best configuration for oceanic seismic observatories is thought to be placement of seismometers in deep boreholes. Two deep-sea borehole seismological observatories (WP-1 and WP-2) were constructed in the western Pacific and form the initial installations of a 1000 km span network. At present, seismic records of more than 400 total days were retrieved from both the WP-1 and WP-2. Long-term variations in broadband seismic noise spectra (3mHz - 10 Hz) in the western Pacific were revealed from these records, and the data showed that ambient seismic noise levels in borehole observatories are comparable to those of the quietest land seismic stations. In addition, there is little temporal variation of noise levels in periods greater than 10 seconds. Due to this low seismic noise environment, many teleseismic events with magnitudes greater than 5 were recorded. It is confirmed that seismic observation in deep-sea borehole gives the best environment for earthquake observation in marine areas. | en |
dc.format.extent | 3109965 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartof | Annals of geophysic | en |
dc.relation.ispartofseries | 2-3/49(2006) | en |
dc.subject | deep-sea borehole observatory | en |
dc.subject | broadband seismometer | en |
dc.subject | seismic noise level | en |
dc.subject | long-term observation | en |
dc.title | Deep-sea borehole seismological observatories in the western Pacific: temporal variation of seismic noise level and event detection | en |
dc.type | article | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques | en |
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dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Shinohara, M. | en |
dc.contributor.author | Araki, E. | en |
dc.contributor.author | Kanazawa, T. | en |
dc.contributor.author | Suyehiro, K. | en |
dc.contributor.author | Mochizuki, M. | en |
dc.contributor.author | Yamada, T. | en |
dc.contributor.author | Nakahigashi, K. | en |
dc.contributor.author | Kaiho, Y. | en |
dc.contributor.author | Fukao, Y. | en |
dc.contributor.department | Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | en |
dc.contributor.department | Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | en |
dc.contributor.department | Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | en |
dc.contributor.department | Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | en |
dc.contributor.department | Institute of Industrial Science, University of Tokyo, Tokyo 153-8505, Japan | en |
dc.contributor.department | Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | en |
dc.contributor.department | Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | en |
dc.contributor.department | Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | en |
dc.contributor.department | Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | - |
crisitem.author.dept | Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | - |
crisitem.author.dept | JAMSTEC, Yokosuka, Japan | - |
crisitem.author.dept | Institute of Industrial Science, University of Tokyo, Tokyo 153-8505, Japan | - |
crisitem.author.dept | Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | - |
crisitem.author.dept | Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan | - |
crisitem.author.dept | Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | - |
crisitem.author.dept | Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
Appears in Collections: | Annals of Geophysics |
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