Development of broadband GPS seismometer

• Project/Area Number: 19840006
• Research Category: Grant-in-Aid for Young Scientists (Start-up)
• Allocation Type: Single-year Grants
• Research Field: Solid earth and planetary physics
• Research Institution: Tohoku University
• Principal Investigator: OHTA Yusaku Tohoku University, 大学院・理学研究科, 助教 (50451513)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,105,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥405,000); Fiscal Year 2008: ¥1,755,000 (Direct Cost: ¥1,350,000、Indirect Cost: ¥405,000); Fiscal Year 2007: ¥1,350,000 (Direct Cost: ¥1,350,000)
• Keywords: GPS / キネマティックGPS / キネマティック / 精密単独測立 / 広帯域地震計 / 天頂大気遅延量 / 天頂大気遅延勾配 / 津波荷重変形

Research Abstract

研究目標とする「GPSデータの広帯域地震計としての利用」の実現のために地震時の実データに対して解析を行い, その精度評価, 利用を行った. 第一に, 本年度発生した2008年岩手・宮城内陸地震の際の地震時変動をキネマティックGPS解析によって精密に検出した. 第二に, キネマティックGPSデータに含まれるノイズ源の解明のために推定パラメータ間の相関関数解析を行い, ノイズ源を精査し, パラメータ間の相関が衛星配置によって変化する事を明らかにした.

Research Products

• [Journal Article] Coseismic fault model of the 2008 Iwate-Miyagi Nairiku dense GPS network (2008)
  • Author(s): Ohta, Y. , M. Ohzono, S. Miura, T. Iinuma, K. Tachibana, K. Takatsuka, K. Miyao, T. Sato, and N. Umino
  • Journal Title: EarthPlanetsSpace 60(12) Pages: 1197-1201
  • Peer Reviewed
• [Journal Article] Postseismic Slip Associated with the Niigataken, Chuetsu-Oki Earthquake in 2007 (M6.8 on 16 July 2007) as Inferred from GPSdata (2008)
  • Author(s): Iinuma, T., Y. Ohta, S. Miura, K. Tachibana, and T. Matsushima, H. Takahashi, T. Sagiya, T. Ito, S. Miyazaki, R. Doke, A. Takeuchi, K. Miyao, A. Hirao, T. Maeda, T. Yamaguchi, M. Takada, M. Iwakuni, T. Ochi, I. Meilano, and A. Hasegawa
  • Journal Title: EarthPlanetsSpace 60 Pages: 1087-1091
  • Peer Reviewed
• [Journal Article] Coseismic and postseismic deformation related to the 2007 Niigataken Chuetsu-Oki Earthquake (2008)
  • Author(s): Ohta.Y., S. Miura, T. Iinuma, K. Tachibana, T. Matsushima, H. Takahashi, T. Sagiya, T. Ito, S. Miyazaki, R. Doke, A. Takeuchi, K. Miyao, A. Hirao, T. Maeda, T. Yamaguchi, M. Takada, M. Iwakuni, T. Ochi, I. Meilano, and A. Hasegawa
  • Journal Title: Earth Planets Space 60(11) Pages: 1081-1086
  • Peer Reviewed
• [Journal Article] Earth tides observed by gravity and GPS in south eastern Alaska (2008)
  • Author(s): Sato T., S. Miura, Y. Ohta, H. Fujimoto, W. Sun, C.F. Larsen, M. Heavner, A.M. Kaufman and J.T. Freymueller
  • Journal Title: Journal of Geodynamics 46 Pages: 78-89
  • Peer Reviewed
• [Journal Article] Seismic and Tsunami wave signal detection of the 2004 Sumatra- Andaman earthquake by high-rate kinematic GPS and broadband seismometer analysis (2008)
  • Author(s): Ohta.Y, K.Takatsuka, S.Miura and T.Sato
  • Journal Title: Proceedings of Symposium on Giant Earthquakes and Tsunamis 1(1) Pages: 135-140
• [Journal Article] Coseismic fault model of the 2008 Iwate-Miyagi Nairiku earthquake deduced by a dense GPS network (2008)
  • Author(s): Ohta, Y., M. Ohzono, S. Miura, T. Iinuma, K. Tachibana, K. Takat suka, K. Miyao, T. Sato, and N. Umino
  • Journal Title: Earth Planets Space 60(12) Pages: 1197-1201
  • NAID: 10029010566
  • Peer Reviewed
• [Journal Article] Coseismic and postseismic deformation related to the 2007 Niigataken Chuetsu-Oki Earthquake (2008)
  • Author(s): Ohta. Y., S. Miura. T. linuma, K. Tachibana, T. Matsushima. H. Takahashi, T. Sagiya, T. lto, S. Miyazaki, R. Doke. A. Takeuchi, K. Miyan. A. Hirao. T. Maeda, T. Y amaguchi. M. Takada. M. lwakuni, T. Ochi. I. Metlano. and A. Hasegawa
  • Journal Title: Earth Planets Space 60(11) Pages: 1081-1086
  • Peer Reviewed
• [Journal Article] Seismic and Tsunami wave signal detection of the 2004 Sumatra- Andaman earthquake by high-rate kinematic GPS and broadband seismometer analysis (2008)
  • Author(s): Ohta. Y, K. Takatsuka, S. Miura and T. Sato
  • Journal Title: Proceedings of Symposium on Giant Earthquakes and Tsunamis 1 Pages: 135-140
• [Journal Article] Seismic and Tsunami wave signal detection of the 2004 Sumatra-Andaman earthquake by high-rate kinematic GPS and broadband seismometer analysis (2008)
  • Author(s): Ohta. Y, K. Takatsuka, S. Miura and T. Sato
  • Journal Title: Proceedings of Symposium on Giant Earthquakes and Tsunamis, Phuket 2008 1 Pages: 135-140
• [Journal Article] Earth tides observed by gravity and GPS in southeastern Alaska (2008)
  • Author(s): T. Sato, S. Miura, Y. Ohta, H. Fujimoto, W. Sun, C. F. Larsen, M. Heavner, A. M. Kaufman and J. T. Freymueller
  • Journal Title: J. Geodynamics
  • Peer Reviewed
• [Presentation] Coseismic fault model of the 2008 Iwate-Miyagi Nairiku earthquake deduced from a dense GPS network, AGU 2008 Fall meeting (2008)
  • Author(s): Ohta, Y. , M. Ohzono, S. Miura, T. Iinuma, K. Tachibana, K. Takatsuka, K. Miyao, T. Sato and . Umino
  • Organizer: meeting, San Fransisco
  • Place of Presentation: Moscone Center
  • Year and Date: 2008-12-15
• [Presentation] Coseismic fault model of the 2008 Iwate-Miyagi Nairiku earthquake deduced from a dense GPS network (2008)
  • Author(s): Ohta, Y. , M. Ohzono, S. Miura, T. Iinuma, K. Tachibana, K. Takatsuka, K. Miyao, T. Sato and . Umino
  • Organizer: The 7theneral Assemb of Asian Seismological Commission
  • Place of Presentation: Tsukuba, Tsukuba international congress center
  • Year and Date: 2008-11-25
• [Presentation] 稠密GPS観測網に基づく2008年岩手・宮城内陸地震の地震時断層モデル (2008)
  • Author(s): 太田雄策・大園真子・三浦哲・飯沼卓史・立花憲司・高塚晃多・宮尾佳世・佐藤俊也・海野徳仁
  • Organizer: 日本測地学会第110回講演会
  • Place of Presentation: 函館市, 函館市民会館
  • Year and Date: 2008-10-24
• [Presentation] キネマティックGPSによる火山体監視の可能性と問題点 (2008)
  • Author(s): 太田雄策・植木貞人・三浦哲・佐藤忠弘
  • Organizer: 平成20年度京都大学防災研究所研究集会(20K09)「火山噴火機構の解明とモデル化-高度な噴火予知を目指して-」
  • Place of Presentation: 宇治, 京都大学防災研究所
  • Year and Date: 2008-09-11
• [Presentation] キネマティックGPS解析に基づく海洋潮汐加重変形検出の安定性評価 (2008)
  • Author(s): 太田雄策・三浦哲・佐藤忠弘
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉, 幕張メッセ
  • Year and Date: 2008-05-29
• [Presentation] キネマティックGPS解析に基づく海洋潮汐加重変形検出の安定性評価 (2008)
  • Author(s): 太田雄策, 三浦哲, 佐藤忠弘
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉幕張メッセ
  • Year and Date: 2008-05-01
• [Presentation] Seismic and Tsunami wave detection of the 2004umatra Andaman eahquake by high-rate kinatic GPS analysis (2008)
  • Author(s): Ohta Y., K. Takatsuka, S. Miura, and T. Sato
  • Organizer: International Symposium on the restoration program from giant earthquakes and tsunamis,
  • Place of Presentation: Phuket, Royal Phuket City Hotel, Phuket, Thailand
  • Year and Date: 2008-01-22
• [Presentation] The time constant variations of slow slip events in the south Alaska subduction zone (2007)
  • Author(s): Ohta, Y., JT. Freymueller, and S. Miura
  • Organizer: AGU 2007 Fall Meeting
  • Place of Presentation: San Fransisco, Moscone South
  • Year and Date: 2007-12-11
• [Presentation] 稠密GPS観測網による2007年中越沖地震の余効変動観測 その1 -GPS臨時観測の概要- (2007)
  • Author(s): 太田雄策・三浦哲・立花憲司・飯沼卓史・松島健・高橋浩晃・宮崎真一・鷺谷威・伊藤武男・道家涼介・竹内章・宮尾佳世・平尾暁彦・前田宜浩・山口照寛・高田真秀・岩國真紀子・落唯史・イルワンメイラノ
  • Organizer: 日本測地学会第108回講演会
  • Place of Presentation: 那智勝浦, ホテル浦島
  • Year and Date: 2007-11-07
• [Presentation] 稠密GPS連続観測に基づく2007年新潟県中越沖地震の余効変動 (2007)
  • Author(s): 太田雄策・三浦哲・立花憲司・飯沼卓史・松島健・高橋浩晃・宮崎真一・鷺谷威・伊藤武男・道家涼介,竹内章,宮尾佳世, 平尾暁彦,前田宜浩,山口照寛,高田真秀,岩國真紀子,落唯史, イルワンメイラノ
  • Organizer: 日本地震学会2007年秋季大会
  • Place of Presentation: 仙台, 仙台国際センター
  • Year and Date: 2007-10-24
• [Presentation] Application of real-time GPS for earthquake disaster mitgation in Japan (2007)
  • Author(s): Ohta Y.
  • Organizer: Real-Time GPS for scientific requirements
  • Place of Presentation: Wenatchee, Sleepin Lady Mountain Retreat
  • Year and Date: 2007-10-05
• [Presentation] Application of real-time GPS for earthquake disaster mitigation in Japan (2007)
  • Author(s): Yusaku Ohta
  • Organizer: Scientific Requirements for Real-time GPS
  • Place of Presentation: Leavenworth,米国
  • Year and Date: 2007-10-04
• [Presentation] Short-term slow slip event at the Alaska Subduction Zone (2007)
  • Author(s): Ohta,Y., and J. T. Freymuller
  • Organizer: EASTEC symposium 2007 Dynamic Earth -its origin and future-
  • Place of Presentation: Sendai, Sendai City War Reconstruction Memorial Hall
  • Year and Date: 2007-09-19
• [Presentation] 東北大からの次期計画にむけた提案その3 観測の高度化のための新規技術開発について (2007)
  • Author(s): 太田雄策
  • Organizer: 次期地震予知研究計画検討シンポジウム
  • Place of Presentation: 東京, 東京大学小柴ホール
  • Year and Date: 2007-06-04
• [Presentation] PPPキネマティックGPSの長期安定性とノイズ特性評価 (2007)
  • Author(s): 太田雄策・鷺谷威・木股文昭
  • Organizer: 日本地球惑星科学連合2007年大会
  • Place of Presentation: 千葉, 幕張メッセ
  • Year and Date: 2007-05-22