Analysis of the short-period wave propagation in the ionosphere associated with earthquakes using 4D GPS tomography

• Project/Area Number: 20340123
• 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: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: OBAYASHI Masayuki 独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 主任研究員 (30359179)
• Co-Investigator(Kenkyū-buntansha): WATADA Shingo 東京大学, 地震研究所, 助教 (30301112)
• Co-Investigator(Renkei-kenkyūsha): OZAWA Shinzaburo 国土地理院, 地理地殻活動研究センター, 主任研究官 (70370806)
• Project Period (FY): 2008 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000); Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2010: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2008: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
• Keywords: トモグラフィー / 電離層擾乱 / 地震が発生する大気波動 / GPS-TEC擾乱 / GEONET / 大気重力波 / 長周期音波 / 大気境界波 / 大気波動伝播 / 2011年東北沖太平洋地震 / ラム波 / 大気振動 / 電離層 / GPS / 全電子数擾乱 / 大気波動 / 地震 / 音波

Research Abstract

Ionospheric electron density disturbance that is often observed after large earthquakes can be measured from the delay of the carrier wave from the GPS navigation satellites. We developed a method to obtain the time variation images of the 3D structure of the ionospheric disturbance using 1Hz-sampling data from GEONET operated by GSI. By applying the method to the 2004 Tokachi-Oki earthquake, we have shown that the ionosphere disturbance is the dispersive sound wave from the ground and the ocean surface. The sound waves were generated by the large-scale crustal deformation and reached to the ionosphere.

Research Products

• [Journal Article] Atmospheric boundary waves excited by the tsunami generation related to the 2011 great Tohoku-Oki earthquake (2011)
  • Author(s): Arai, N. M. Iwakuni, S. Watada, et al.
  • Journal Title: Geophys. Res. Lett. Volume: 38 Issue: 7 Pages: n/a-n/a
  • DOI: 10.1029/2011gl049146
  • Peer Reviewed
• [Journal Article] ナノ分解能気圧センサーを用いた可搬型インフラサウンド観測システムの開発 (2011)
  • Author(s): 村山貴彦・今西祐一・綿田辰吾・大井琢磨・新井伸夫・岩国真紀子・野上麻美
  • Journal Title: 震研究所技術研究報告 Volume: 17 Pages: 63-76
  • NAID: 120006221561
• [Journal Article] Acoustic Resonant Oscillations Between the Atmosphere and the Solid Earth During the 1991 Mt (2010)
  • Author(s): Watada, S., H. Kanamori
  • Journal Title: Pinatubo Eruption, J. Geophys Volume: 115 Issue: B12
  • DOI: 10.1029/2010jb007747
  • Peer Reviewed
• [Journal Article] Acoustic Gravity Waves from Earthquakesin Infrasound Monitoring for Atmospheric Studies (2010)
  • Author(s): T. Mikumo, S. Watada
  • Journal Title: A. Hauchecorne, Springer Pages: 259-275
  • Peer Reviewed
• [Journal Article] Acoustic Resonant Oscillations Between the Atmosphere and the Solid Earth During the 1991 Mt. (2010)
  • Author(s): Watada, S, H.Kanamori
  • Journal Title: Pinatubo Eruption, J.Geophys.Res. 115
  • Peer Reviewed
• [Journal Article] Acoustic Gravity Waves from Earthquakes (2010)
  • Author(s): T.Mikumo, S. Watada
  • Journal Title: in Infrasound Monitoring for Atmospheric Studies(eds A.Le Pichon, E.Blanc, A.Hauchecorne, Springer) Pages: 259-275
  • Peer Reviewed
• [Journal Article] Acoustic Resonant Oscillations Between the Atmosphere and the Solid Earth During the 1991 Mt.Pinatubo Eruption (2010)
  • Author(s): Watada, S.
  • Journal Title: Journal of Geophysical Research Volume: 115
  • Peer Reviewed
• [Journal Article] Acoustic Gravity Waves from Earthquakes (2010)
  • Author(s): T.Mikumo
  • Journal Title: Infrasound Monitoring for Atmospheric Studies Pages: 259-275
  • Peer Reviewed
• [Journal Article] (2010)
  • Author(s): T.Mikumo
  • Journal Title: Infrasound Monitoring for Atmospheric Studies(Springer) Pages: 263-281
• [Journal Article] Radiation of acoustic and gravity waves and propagation of boundary waves in the stratified fluid from a time-varying bottom boundary (2009)
  • Author(s): Watada S.
  • Journal Title: J. Fluid Mech. Volume: 627 Pages: 361-377
  • NAID: 120001072850
  • Peer Reviewed
• [Journal Article] 大地震に伴う気圧変動 (2009)
  • Author(s): 綿田辰吾
  • Journal Title: 地震ジャーナル Volume: 47 Pages: 25-26
• [Journal Article] Radiation of acoustic and gravity waves and propagation of boundary waves in the stratified fluid from a time-varying bottom boundary (2009)
  • Author(s): Watada, S
  • Journal Title: J.Fluid Mech. 627 Pages: 361-377
  • NAID: 120001072850
  • Peer Reviewed
• [Journal Article] 大地震に伴う気圧変動 (2009)
  • Author(s): 綿田辰吾
  • Journal Title: 地震ジャーナル 47 Pages: 25-26
• [Journal Article] Radiation of acoustic and gravity waves and propagation of boundary waves in the stratified fluid from a time-varying bottom boundary (2009)
  • Author(s): 綿田辰吾
  • Journal Title: Journal of Fluid Mechanics 627 Pages: 361-377
  • NAID: 120001072850
  • Peer Reviewed
• [Journal Article] Radiation of acoustic and gravity waves and propagation of boundary waves in the stratified fluid from a time-varying bottom boundary (2009)
  • Author(s): Shingo Watada
  • Journal Title: Journal of Fluid Mechanics 627 Pages: 361-377
  • NAID: 120001072850
  • Peer Reviewed
• [Journal Article] Acoustic-gravity waves from earthquake sources (2009)
  • Author(s): Takashi Mikumo
  • Journal Title: Infrasound monitoring for atmospheric studies" Le-Pichon et al., eds (印刷中)
  • Peer Reviewed
• [Journal Article] Low-frequency acoustic-gravity waves from tectonic deformation associated with the 2004 Sumatra-Andaman earthquake(Mw=9.2) (2008)
  • Author(s): Mikumo, T. T. Shibutani, A. L. Pichon, M. Garces, D. Fee, T. Tsuyuki, S. Watada, W. Morii
  • Journal Title: J. Geophys. Res. Volume: 113 Issue: B12
  • DOI: 10.1029/2008jb005710
  • Peer Reviewed
• [Journal Article] Low-frequency acoustic-gravity waves from tectonic deformation associated with the 2004 Sumatra-Andaman earthquake (Mw=9.2) (2008)
  • Author(s): Mikumo, T.T.Shibutani, A.L.Pichon, M.Garces, D.Fee, T.Tsuyuki, S.Watada, W.Morii
  • Journal Title: J.Geophys.Res. 113
  • Peer Reviewed
• [Journal Article] Low-frequency acoustic-gravity waves from tectonic deformation associated with the 2004 Sumatra-Andaman earthquake (Mw=9.2) (2008)
  • Author(s): Takashi Mikumo
  • Journal Title: Journal of Geophysical Research 113
• [Presentation] Atmospheric boundary waves excited by the tsunami generation related to the 2011 great Tohoku-Oki earthquake (2011)
  • Author(s): Nobuo, A., M. Iwakuni, S. Watada, Y. Imanishi, T. Murayama, M. Nogami
  • Organizer: American Geophysical Union fall meeting
  • Place of Presentation: San Fancisco(USA)
  • Year and Date: 2011-12-07
• [Presentation] Acoustic resonant oscillations between the atmosphere and the solid earth during the 1991 Mt. (2011)
  • Author(s): 綿田辰吾
  • Organizer: Pinatubo eruption
  • Place of Presentation: SGEPPS秋季大会,神戸大学
  • Year and Date: 2011-11-06
• [Presentation] Acoustic resonant oscillations between the atmosphere and the solid earth during the 1991 Mt (2011)
  • Author(s): Watada S.
  • Organizer: Pinatubo eruption, Todai forum, New horizons in the earth science
  • Place of Presentation: Paris(Frace)
  • Year and Date: 2011-10-18
• [Presentation] Hiroo Kanamori, Acoustic Resonant Oscillations Between the Atmosphere and the Solid Earth During the 1991 Mt. Pinatubo Eruption (2011)
  • Author(s): Watada, S.
  • Organizer: IUGG general assembly
  • Place of Presentation: メルボルンコンンベンションセンター(オーストラリア)
  • Year and Date: 2011-06-02
• [Presentation] Acoustic resonant oscilations between the atmosphere and the solid Earth during the 1991 Mt (2011)
  • Author(s): Shingo Watada, Hiroo Kanamori
  • Organizer: Pinatubo eruption, Japan Geoscience Union
  • Place of Presentation: Japan Geoscience Union, Makuhari(Japan)
  • Year and Date: 2011-05-24
• [Presentation] Dispersion of infrasound signals excited by explosive eruptions of the Sakura-jima volcano (2010)
  • Author(s): Nobuo Arai, Yuichi Imanishi, Shingo Watada, Takuma Oi, Takahiko Murayama, Makiko Iwakuni, Mami Nogami
  • Organizer: American Geophysical Union fall meeting
  • Place of Presentation: San Francisco(USA)
  • Year and Date: 2010-12-17
• [Presentation] Azimuthal Traveltime and Amplitude Anomalies of Tropospheric and Thermospheric Acoustic Waves From the Explosive Eruption of the Sakurajima Volcano in Japan (2010)
  • Author(s): Watada. S., N. Arai, T. Murayama, M. Iwakuni, M. Nogami, Y. Imanishi, T. Oi, Y. Kitagawa
  • Organizer: Americal Geophysical Union fall meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2010-12-13
• [Presentation] Azimuthal Traveltime and Amplitude Anomalies of Tropospheric and Thermospheric Acoustic Waves From the Explosive Eruption of the Sakurajima Volcano in Japan (2010)
  • Author(s): Watada, S.
  • Organizer: American Geophysical Union fall meeting
  • Place of Presentation: モスコーンコンベンションセンター(サンフランシスコ市)
  • Year and Date: 2010-12-13
• [Presentation] ハスケル行列法による大気・固体地球結合系のモード計算 (2010)
  • Author(s): 綿田辰吾
  • Organizer: 日本地震学会秋期大会
  • Place of Presentation: 広島国際会議場(広島市)
  • Year and Date: 2010-10-29
• [Presentation] インフラサウンドの観測-桜島の爆発噴火に起因するシグナルの速度分散性- (2010)
  • Author(s): 新井伸夫,今西祐一,綿田辰吾,大井拓磨,村山貴彦,村田和則,岩國真紀子,野上麻美
  • Organizer: 日本音響学会2010年秋期研究発表会
  • Place of Presentation: 関西大学(吹田市)
  • Year and Date: 2010-09-14
• [Presentation] 低周波マイクロフォン比較実験 (2010)
  • Author(s): 綿田辰吾、横尾亮彦、今西祐一、大井拓磨、中埜彰洋、安藤秀樹、佐藤峰司、寺薗佳高
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2010-05-25
• [Presentation] 低周波マイクロフォン比較実験 (2010)
  • Author(s): 綿田辰吾
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ国際会議場(千葉市)
  • Year and Date: 2010-05-25
• [Presentation] 桜島火山の爆発的噴火後に見られる低周波音波の方位に依存した振幅・伝播時間異常 (2010)
  • Author(s): 綿田辰吾,新井伸夫,村山貴彦,岩國真紀子,野上麻美,今西祐一,大井拓磨
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2010-05-24
• [Presentation] 桜島火山の爆発的噴火後に見られる低周波音波の方位に依存した振幅・伝播時間異常 (2010)
  • Author(s): 綿田辰吾
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ国際会議場(千葉市)
  • Year and Date: 2010-05-24
• [Presentation] Dispersion of infrasound signals excited by explosive eruptions of the Sakura-jima volcano (2010)
  • Author(s): Nobuo Arai, Yuichi Imanishi, Shingo Watada, Takuma Oi, Takahiko Murayama, Makiko Iwakuni, Mami Nogami
  • Organizer: Monitoring Research Review on Ground-Based Nuclear Explosion Monitoring Technologies
  • Place of Presentation: Orlando Florida(USA)
• [Presentation] Radiation of Atmospheric waves from the ground motion: Observation and Theory From an Array of Co-located Microbarometers and Broadband Seismometers in Japan (2009)
  • Author(s): 綿田辰吾, S.Sekiguchi, K.Nishida, 大林政行
  • Organizer: Americal Geophysical Union fall meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2009-12-14
• [Presentation] Radiation of Atmospheric waves from the ground motion : Observation and Theory From an Array of Co-located Microbarometers and Broadband Seismometers in Japan (2009)
  • Author(s): 綿田辰吾
  • Organizer: 米国地球物理学会秋季大会
  • Place of Presentation: モスコーンコンベンションセンター(サンフランシスコ市)
  • Year and Date: 2009-12-14
• [Presentation] 密度成層する流体波動の放射境界条件 (2009)
  • Author(s): 綿田辰吾
  • Organizer: 日本地震学会秋季大会
  • Place of Presentation: 京都大学吉田キャンパス(京都市)
  • Year and Date: 2009-10-23
• [Presentation] Wave Propagation in the Ionosphere Associated With Earthquakes Revealed by GPS-TEC 4D Tomography (2008)
  • Author(s): Shingo Watada
  • Organizer: AGU fall meeting 2008
  • Place of Presentation: 米国サンフランシスコ市モスコーン会議場
  • Year and Date: 2008-12-18
• [Presentation] Wave Propagation in the Ionosphere Associated With Earthquakes Revealed by GPS-TEC 4D Tomography (2008)
  • Author(s): Watada, S., M. Obayashi, S. Ozawa
  • Organizer: Americal Geophysical Union fall meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2008-12-17
• [Presentation] Energy flow of acoustic-gravity waves from the time-varying bottom boundary in the isothermal atmosphere (2008)
  • Author(s): Shingo Watada
  • Organizer: 7th General Assembly of Asian Seismological Commission
  • Place of Presentation: つくば市国際会議場
  • Year and Date: 2008-11-25
• [Presentation] GPS 4次元トモグラフィーによる地震発生に伴う電離層内波動現象の解明 (2008)
  • Author(s): 綿田辰吾,大林政行,小沢慎三郎
  • Organizer: 地球電磁気・地球惑星圏学
  • Place of Presentation: 会仙台市戦災復興記念館
  • Year and Date: 2008-10-11
• [Presentation] GPS4次元トモグラフィーによる地震発生に伴う電離層内波動現象の解明 (2008)
  • Author(s): 綿田辰吾, 大林政行, 小沢慎三郎
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: 仙台
  • Year and Date: 2008-10-11
• [Presentation] GPS4次元トモグラフィーによる地震発生に伴う電離層内波動現象の解明 (2008)
  • Author(s): 綿田辰吾
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: 仙台市戦災復興記念館
  • Year and Date: 2008-10-11