Detection of slow earthquakes using broadband seismic records
Detection of slow earthquakes using broadband seismic records
批准号:
13640423
负责人:
SUDA Naoki
金额:
$1.86万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2001
资助国家:
日本
项目状态:
已结题
起止时间:
2001 至 2002
中文摘要
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英文摘要
We analyzed continuous vertical-component records for 10-year period from 1990 to 1999 at 30 quiet seismic stations of IRIS GSN and GEOSCOPE networks and examined excitation of 27 fundamental spheroidal modes OS17-OS43 of the Earth's free oscillations. We performed a statistical test at time step of 3~hours. Our statistical test was based on that of Beroza & Jordan (1990), but we utilized a different test statistic and a numerical method for mode detection. We made time variation plots for the achieved significance level of event occurrence and visually inspected unknown events. As a result we detected 27 unknown events in seismically quiet intervals.
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Nawa, K.: "Sea level variation in seismic normal mode band observed with on-ice GPS and on-land SG at syowa Station, Antarctica."Geophys. Res. Lett.. 30. doi: 10. 1029/2003GL016919
Nawa, K.:“在南极洲 syowa 站使用冰上 GPS 和陆地 SG 观测到的地震正模带中的海平面变化。”地球物理学。
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名和: "地球自由振動帯域における潮位変動の影響"地球. (印刷中).
Nawa:“潮汐平面波动对地球自由振荡带的影响”地球(正在出版)。
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Nawa, K.: "Effect of sea level variations on gravity data at the seismic normal mode band"Chikyu. in press.
Nawa, K.:“海平面变化对地震正态模式带重力数据的影响”Chikyu。
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Nawa, K.: "Observations of the Earth's free oscillations in Antarctica"Chikyu. special issue. 26-31 (2001)
Nawa, K.:“南极洲地球自由振荡的观测”Chikyu。
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Nawa, K.: "Sea level variation in seismic normal mode band observed with on-ice GPS and on-land SG at Syowa Station, Antarctica"Geophys. Res. Lett.. (in press). (2002)
Nawa, K.:“在南极洲昭和站用冰上 GPS 和陆上 SG 观测到的地震正模带中的海平面变化”地球物理学。
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共 7 条
Simultaneous automatic monitoring of deep non-volcanic tremor and very low-frequency earthquake in the Bungo Chennel region, southwest Japan
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批准号:20540412
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$2.91万
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财政年份:2008
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负责人:SUDA Naoki
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依托单位:
Systematic research on low-frequency tremor, "very" low-frequency earthquake and slow slip event
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批准号:16340131
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$6.72万
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财政年份:2004
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负责人:SUDA Naoki
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依托单位:
Studies on the origin of Earth's background free oscillations
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批准号:11640415
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.92万
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财政年份:1999
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负责人:SUDA Naoki
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依托单位:
海外基金