1996 Fiscal Year Final Research Report Summary
Waveform Realtime Seismology
| Project/Area Number |
07558171
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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 | 試験 |
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| Research Field |
Natural disaster science
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| Research Institution | University of Tokyo |
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Principal Investigator |
KAWAKATSU Hitoshi U.Tokyo, Earthquake Research Institute Associate Professor, 地震研究所, 助教授 (60242153)
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| Co-Investigator(Kenkyū-buntansha) |
TAKANO Kiyoshi U.Tokyo, Earthquake Research Institute Associate Professor, 地震研究所, 助教授 (80134659)
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| Project Period (FY) |
1995 – 1996
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| Keywords | realtime seismology / CMT / earthquake source mechanism / moment tensor / broadband seismometer |
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| Research Abstract |
Utilizing data from broadband seismic networks of different scales (global, whole Japan, and Kanto region), we have developed automated near-realtime moment tensor inversion schemes for those three different scales. For the flobal scale, it is now possible to determine CMT of earthquakes larger than M - 5.4 wirhin 2 hours of their occurrence ; for the whole Japan scale, it is now possible to determine CMT of earthquakes larger than M - 5.4 within 30 minutes of their occurrence ; for the Kanto scale, it is now possible to determine CMT of earthquakes larger than M - 4.0 within 15 minutes of their occurrence. For the last scale problem, it should be possible to monitor the "earthquake activity field" in realtime.
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