Study on slow earthquakes by detailed analysis of broadband observation

• Project/Area Number: 20340115
• 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: IDE Satoshi The University of Tokyo, 大学院・理学系研究科, 准教授 (90292713)
• Co-Investigator(Kenkyū-buntansha): IMANISHI Kazutoshi 産業技術総合研究所, 研究員 (70356517) ; HIROSE Hitoshi 防災科学技術研究所, 研究員 (00465965) ; SHIOMI Katsuhiko 防災科学技術研究所, 主任研究員 (20500375)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000); Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2008: ¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
• Keywords: 地震現象 / ゆっくり地震 / 深部低周波微動 / 時間関数 / 震源決定 / 地震観測 / 低周波地震 / 東海地域 / ブラウン運動 / 沈み込み帯

Research Abstract

To understand slow earthquakes recently discovered in world subduction zones, we observed and investigated broadband seismic data mainly in the Nankai subduction zone. We determined accurate location of tectonic tremor, revealed statistical properties of tremor and slow earthquakes, and presented a model in which tremor zones are formed through long-term plate motion. We also presented a new plate model of the Philippine Sea plate.

Research Products

• [Journal Article] Precise hypocenter distribution of deep low-frequency earthquakes and its relationship to the local geometry of the subducting plate in the Nankai subduction zone (2011)
  • Author(s): Ohta, K., S.Ide
  • Journal Title: Japan, Journal of Geophysical Research 116, B01308
• [Journal Article] Precise hypocenter distribution of deep low-frequency earthquakes and its relationship to the local geometry of the subducting plate in the Nankai subduction zone (2011)
  • Author(s): IOhta, IC, S.Ide
  • Journal Title: Journal of Geophysical Research Volume: 116
  • Peer Reviewed
• [Journal Article] Split Philippine Sea plate beneath Japan (2010)
  • Author(s): Ide, S., K.Shiomi, K.Mochizuki, T.Tonegawa, G.Kimura
  • Journal Title: Geophysical Research Letters 37, L21304
• [Journal Article] Striations, duration, migration and tidal response in deep tremor (2010)
  • Author(s): Ide, S.
  • Journal Title: Nature 466
• [Journal Article] Quantifying the time function of nonvolcanic tremor based on a stochastic model (2010)
  • Author(s): Ide, S.
  • Journal Title: Journal of Geophysical Research 115, B08313
• [Journal Article] Striations, duration, migration and tidal response in deep tremor (2010)
  • Author(s): Ide, S.
  • Journal Title: Nature Volume: 466 Pages: 356-359
  • Peer Reviewed
• [Journal Article] Quantifying the time function of nonvolcanic tremor based on a stochastic model (2010)
  • Author(s): Ide, S.
  • Journal Title: Journal of Geophysical Research Volume: 115
  • Peer Reviewed
• [Journal Article] Split Philippine Sea plate beneath Japan (2010)
  • Author(s): Ide, S., K.Shiomi, K.Mochizuk i, T.Tonegawa, G.Kimura
  • Journal Title: Geophysical Research Letters Volume: 37
  • Peer Reviewed
• [Journal Article] Deep tremors and slow quakes (2009)
  • Author(s): Beroza, G.C., S.Ide
  • Journal Title: Science 324 Pages: 1025-1026
• [Journal Article] Deep low-frequency earthquakes in tremor localize to the plate interface in multiple subduction zones (2009)
  • Author(s): Brown, J.R., G.C.Beroza, S.Ide, Ohta, K., Shelly, D.R., Schwartz, S.Y., Rabbel, W., Thorwart, M., Kao, H.
  • Journal Title: Geophysical Research Letters 36, L19306
• [Journal Article] 地震発生過程のスケール依存性 (2009)
  • Author(s): 井出哲
  • Journal Title: 地震 2, 61(60周年特集号)
  • NAID: 10025366230
• [Journal Article] 地震発生過程のスケール依存性 (2009)
  • Author(s): 井出哲
  • Journal Title: 地震 61
  • NAID: 10025366230
  • Peer Reviewed
• [Journal Article] Deep low-frequency earthquakes in tremor localize to the plate interface in multiple subduction zones (2009)
  • Author(s): Brown, JR ; Beroza, GC ; 井出哲, et al.
  • Journal Title: Geophysical Research Letters 36
  • Peer Reviewed
• [Journal Article] Deep Tremors and Slow Quakes (2009)
  • Author(s): Beroza, GC ; 井出哲
  • Journal Title: Science 324 Pages: 5930-5930
• [Journal Article] A Brownian walk model for slow earthquakes (2008)
  • Author(s): Ide, S.
  • Journal Title: Geophysical Research Letters 35, L17301
• [Journal Article] A precise hypocenter determination method using network correlation coefficients and its application to deep low-frequency earthquakes (2008)
  • Author(s): Ohta, K., S.Ide
  • Journal Title: Earth Planets Space 60 Pages: 877-882
  • NAID: 10029009469
• [Journal Article] Bridging the gap between seismically and geodetically detected slow earthquakes (2008)
  • Author(s): Ide, S., K.Imanishi, Y.Yoshida, G.C.Beroza, D.R.Shelly
  • Journal Title: Geophysical Research Letters 35, L10305
• [Journal Article] Bridging the gap between seismically and geodetically detected slow earthquakes (2008)
  • Author(s): Ide, S., K. Imanishi, Y. Yoshida, G. C. Beroza, D. R. Shelly
  • Journal Title: Geophysical Research Letters 35
  • Peer Reviewed
• [Journal Article] A precise hypocenter determination method using network correlation coefficients and its application to deep low-frequency earthquakes (2008)
  • Author(s): Ohta, K., and S. Ide
  • Journal Title: Earth Planets Space 60 Pages: 877-882
  • NAID: 10029009469
  • Peer Reviewed
• [Journal Article] A Brownian walk model for slow earthquakes (2008)
  • Author(s): Ide, S.
  • Journal Title: Geophysical Research Letters 35
  • Peer Reviewed
• [Presentation] Volcanic? Non-Volcanic? Low-Frequency Earthquakes beneath Osaka Bay-Event Search from Continuous Records (2010)
  • Author(s): Aso, N., S.Ide
  • Organizer: AGU 2010 Fall Meeting
  • Place of Presentation: San Francisco, CA, USA.
  • Year and Date: 2010-12-14
• [Presentation] Volcanic? Non-Volcanic? Low-Frequency Earthquakes beneath Osaka Bay-Event Search from Continuous Records (2010)
  • Author(s): Aso, N., S.Ide
  • Organizer: AGU 2010 Fall Meeting
  • Place of Presentation: Moscone Convention Center, San Francisco CA, USA
  • Year and Date: 2010-12-14
• [Presentation] Striations and tremor duration controlling diverse tremor behavior : from western Shikoku to world tremor zones (2010)
  • Author(s): 井出哲
  • Organizer: AGU 2010 Fall Meeting
  • Place of Presentation: San Francisco, CA, USA.
  • Year and Date: 2010-12-13
• [Presentation] Numerical modering for branching faults in a subduction system (2010)
  • Author(s): Tamura, S., S.Ide
  • Organizer: AGU 2010 Fall Meeting
  • Place of Presentation: San Francisco, CA, USA.
  • Year and Date: 2010-12-13
• [Presentation] Striations and tremor duration controlling diverse tremor behavior : from western Shikoku to world tremor zones (2010)
  • Author(s): Ide, S.
  • Organizer: AGU 2010 Fall Meeting
  • Place of Presentation: Moscone Convention Center, San Francisco CA, USA
  • Year and Date: 2010-12-13
• [Presentation] Numerical modering for branching faults in a subduction system (2010)
  • Author(s): Tamura, S., S.Ide
  • Organizer: AGU 2010 Fall Meeting
  • Place of Presentation: Moscone Convention Center, San Francisco CA, USA
  • Year and Date: 2010-12-13
• [Presentation] 深部微動の線状構造・継続時間・移動様式・潮汐応答 (2010)
  • Author(s): 井出哲
  • Organizer: 日本地震学会2010年度秋季大会
  • Place of Presentation: 広島市
  • Year and Date: 2010-10-28
• [Presentation] 深部微動の線備造・継続時間・移動様式・潮汐応答 (2010)
  • Author(s): 井出哲
  • Organizer: 日本地震学会2010年度秋季大会
  • Place of Presentation: 広島国際会議場
  • Year and Date: 2010-10-28
• [Presentation] 大阪湾の低周波地震は火山性か?～連続波形データを使った活動の解明～ (2010)
  • Author(s): 麻生尚文, 井出哲
  • Organizer: 日本地震学会2010年度秋季大会
  • Place of Presentation: 広島市
  • Year and Date: 2010-10-27
• [Presentation] 西南日本下の断裂したフィリピン海レート (2010)
  • Author(s): 井出哲・汐見勝彦・望月公廣・利根川貴志・木村学
  • Organizer: 日本地震学会2010年度秋季大会
  • Place of Presentation: 広島市
  • Year and Date: 2010-10-27
• [Presentation] 西南日本下断裂したフィリピン海レート (2010)
  • Author(s): 井出哲・汐見勝彦・望月公廣・利根川貴志・木村学
  • Organizer: 日本地震学会2010年度秋季大会
  • Place of Presentation: 広島国際会議場
  • Year and Date: 2010-10-27
• [Presentation] 大阪湾の低周波地震は火山性か?～漣続波形データを使った活動の解明～ (2010)
  • Author(s): 麻生尚文, 井出哲
  • Organizer: 日本地震学会2010年度秋季大会
  • Place of Presentation: 広島国際会議場
  • Year and Date: 2010-10-27
• [Presentation] Striations, duration, migration and tidal response in deep tremor (2010)
  • Author(s): 井出哲
  • Organizer: 8th Joint Meeting of UJNR Panel on Earthquake Research
  • Place of Presentation: 長岡市
  • Year and Date: 2010-10-22
• [Presentation] Striations, duration, migration and tidal response in deep tremor (2010)
  • Author(s): Ide, S.
  • Organizer: 8th Joint Meeting of UJNR Panel on Earthq cake Research
  • Place of Presentation: ホテルニューオータニ長岡(長岡市)
  • Year and Date: 2010-10-22
• [Presentation] 西南日本下の断裂したフィリピン海レート (2010)
  • Author(s): 井出哲・汐見勝彦・望月公廣・利根川貴志・木村学
  • Organizer: 日本地質学会第117年学術大会
  • Place of Presentation: 富山市
  • Year and Date: 2010-09-19
• [Presentation] 西南日本下の断裂したフィリピン海レート (2010)
  • Author(s): 井出哲・汐見勝彦・望月公廣・利根川貴志・木村学
  • Organizer: 日本地質学会第117年術大会
  • Place of Presentation: 富山大学
  • Year and Date: 2010-09-19
• [Presentation] Time function and spatial migration of non-volcanic tremor (2010)
  • Author(s): 井出哲
  • Organizer: Meeting of Americas
  • Place of Presentation: Foz do Iguassu, Brasil.
  • Year and Date: 2010-08-11
• [Presentation] Time function and spatial migration of non-volcanic tremor (2010)
  • Author(s): Ide, S.
  • Organizer: Meeting of Americas
  • Place of Presentation: Foz do Iguassu, Brasil
  • Year and Date: 2010-08-11
• [Presentation] 確率過程モデルを用いた深部低周波微動の時間関数の定量化 (2010)
  • Author(s): 井出哲
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 千葉市
  • Year and Date: 2010-05-18
• [Presentation] 確率過程モデルを用いた深部低周波微動の時間関数の定量化 (2010)
  • Author(s): 井出哲
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 千葉市幕張メッセ
  • Year and Date: 2010-05-18
• [Presentation] What is a characteristic time of nonvolcanic tremor in slow earthquakes? (2009)
  • Author(s): 井出哲
  • Organizer: AGU 2009 Fall Meeting
  • Place of Presentation: San Francisco, CA, USA.
  • Year and Date: 2009-12-15
• [Presentation] What is a characteristic time of nonvolcanic tremor in slow earthquakes? (2009)
  • Author(s): 井出哲
  • Organizer: AGU 2009 Fall Meeting
  • Place of Presentation: San Francisco, CA, USA
  • Year and Date: 2009-12-15
• [Presentation] Precise hypocenter distribution of deep low-frequency earthquakes and its relationship to the local geometry of the subducting plate in Nankai subduction zone, Japan (2009)
  • Author(s): Ohta, K., Ide S.
  • Organizer: AGU 2009 Fall Meeting
  • Place of Presentation: San Francisco, CA, USA
  • Year and Date: 2009-12-14
• [Presentation] 深部低周波微動の特徴的時定数の推定 (2009)
  • Author(s): 井出哲
  • Organizer: 日本地震学会2009年秋季大会
  • Place of Presentation: 京都市
  • Year and Date: 2009-10-23
• [Presentation] Characteristics and interpretation of slow earthquakes (2009)
  • Author(s): 井出哲
  • Organizer: French-Japanese International Workshop on Earthquake Source
  • Place of Presentation: Paris-Orleans, France.
  • Year and Date: 2009-10-05
• [Presentation] Characteristics and interpretation of slow earthquakes (2009)
  • Author(s): 井出哲
  • Organizer: French-Japanese International Workshop on Earthquake Source
  • Place of Presentation: Paris-Orleans, France
  • Year and Date: 2009-10-05
• [Presentation] 南海トラフ沈み込み帯における深部低周波地震の精密震源分布と局所的なプレート構造との関係 (2009)
  • Author(s): 太田和晃、井出哲
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 千葉市
  • Year and Date: 2009-05-17
• [Presentation] Precise Hypocenter Distribution of Deep Low-Frequency Earthquakes and Its Relationship to the Local Geometry of the Subducting Plate in Nankai Subduction Zone, Japan (2009)
  • Author(s): Ohta, K., Ide S.
  • Organizer: SSA 2009 Annual Meeting
  • Place of Presentation: Monterey, CA, USA.
  • Year and Date: 2009-04-10
• [Presentation] Precise Hypocenter Distribution of Deep Low-Frequency Earthquakes and Its Relationship to the Local Geometry of the Subducting Plate in Nankai Subduction Zone, Japan (2009)
  • Author(s): 太田和晃, 井出哲
  • Organizer: SSA 2009 Annual Meeting
  • Place of Presentation: Monterey, CA, USA
  • Year and Date: 2009-04-10
• [Presentation] Scaling and Statistics of Moment Rate Functions of Slow Earthquakes. (2009)
  • Author(s): 井出哲
  • Organizer: SSA 2009 Annual Meeting
  • Place of Presentation: Monterey, CA, USA.
  • Year and Date: 2009-04-09
• [Presentation] Self-Similarity of Earthquake Rupture Growth in Parkfield Area (2009)
  • Author(s): Uchide, T., Ide S.
  • Organizer: SSA 2009 Annual Meeting
  • Place of Presentation: Monterey, CA, USA.
  • Year and Date: 2009-04-09
• [Presentation] Scaling and Statistics of Moment Rate Functions of Slow Earthquakes (2009)
  • Author(s): 井出哲
  • Organizer: SSA 2009 Annual Meeting
  • Place of Presentation: Monterey, CA, USA
  • Year and Date: 2009-04-09
• [Presentation] Self-Similarity of Earthquake Rupture Growth in Parkfield Area (2009)
  • Author(s): Uchide, T., 井出哲
  • Organizer: SSA 2009 Annual Meeting
  • Place of Presentation: Monterey, CA, USA
  • Year and Date: 2009-04-09
• [Presentation] Characteristics & Interpretation of Seismic Slow Earthquakes (2009)
  • Author(s): 井出哲
  • Organizer: Brinson Lecture Series Carnegie Institution of Washington, DTM
  • Place of Presentation: Washingon DC, USA.
  • Year and Date: 2009-03-04
• [Presentation] Characteristics & Interpretation of Seismic Slow Earthquakes (2009)
  • Author(s): Ide, S.
  • Organizer: Brinson Lecture Series Carnegie Institution of W ashington, DTM
  • Place of Presentation: Washingon DC, USA
  • Year and Date: 2009-03-04
• [Presentation] Characteritics, Scaling & Interpretation of Slow Earthquakes (2009)
  • Author(s): 井出哲
  • Organizer: IASPEI 2009, General Assembly
  • Place of Presentation: Cape Town, South Africa
  • Year and Date: 2009-01-14
• [Presentation] Characteritics, Scaling & Interpretation of Slow Earthquakes (2009)
  • Author(s): Ide; S.
  • Organizer: IASPEI 2009, General Assembly
  • Place of Presentation: Cape Town, South Afric a
  • Year and Date: 2009-01-14
• [Presentation] Are slow slip events more than the cumulative sum of slip in tremor? (2008)
  • Author(s): Ide S., G.C.Beroza, D.R.Shelly, K.Ohta, J.R.Brown, K.Imanishi
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco, CA, USA.
  • Year and Date: 2008-12-18
• [Presentation] Are slow slip events more than the cumulative sum of slip in tremor? (2008)
  • Author(s): Ide, S., G. C. Beroza, D. R. Sh elly, K. Ohta, J. R. Brown, K. Imanish
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco, CA, USA
  • Year and Date: 2008-12-18
• [Presentation] A Brownian Walk Model for Slow Earthquakes (2008)
  • Author(s): 井出哲
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco, CA, USA.
  • Year and Date: 2008-12-17
• [Presentation] A Brownian Walk Model for Slow Earthquakes (2008)
  • Author(s): Ide, S.
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco, CA, USA
  • Year and Date: 2008-12-17
• [Presentation] A Brownian Walk Model for Slow Earthquakes (2008)
  • Author(s): 井出哲
  • Organizer: ASC-SSJ Meeting 2008
  • Place of Presentation: つくば市
  • Year and Date: 2008-11-26
• [Presentation] Episodic tremor and slip in Japan (2008)
  • Author(s): 井出哲
  • Organizer: 2008 IRIS Workshop
  • Place of Presentation: Stevenson, WA, USA.
  • Year and Date: 2008-06-06
• [Presentation] Episdic tremor and slip in Japan (2008)
  • Author(s): Ide, S.
  • Organizer: 2008 IRIS Workshop
  • Place of Presentation: Stevenson, WA, USA
  • Year and Date: 2008-06-06
• [Presentation] Bridging the gap between seismically and geodetically detected slow earthquakes (2008)
  • Author(s): Ide S., K.Imanishi, Y.Yoshida, G.C.Beroza, D.R.Shelly
  • Organizer: SSA 2008 Annual Meeting
  • Place of Presentation: Santa Fe, NM, USA.
  • Year and Date: 2008-04-18
• [Presentation] Bridging the gap between seismically and geodetically detected slow earthquakes (2008)
  • Author(s): Ide, S., K. Imanishi, Y. Yoshid a, G. C. Beroza, D. R. Shelly
  • Organizer: SSA 2008 Annual Meeting
  • Place of Presentation: Santa Fe, NM, USA
  • Year and Date: 2008-04-18