Detection of temporal changes of Earth's internal structure usingseismic interferometry

• Project/Area Number: 22740289
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Solid earth and planetary physics
• Research Institution: The University of Tokyo
• Principal Investigator: NISHIDA Kiwamu 東京大学, 地震研究所, 助教 (10345176)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 地震波速度構造 / 地震波干渉法 / 表面波

Research Abstract

We succeeded in extraction of global body-wave propagation by cross-correlating ambient noise wave field.Using autocorrelation analysis of ocean bottom seismometers, we detected temporal changes of s wave speeds and the azimuthal anisotropy in the shallow sedimentary layer. The changes can be explained by strong motion in the layer when the grate Tohoku earthquake in 2011. We also detected the temporal changes by cross correlation analysis of V-net data deployed by NIED.

Research Products

• [Journal Article] A temporal change of shear wave anisotropy within the marine sedimentary layer associated with the 2011Tohoku-Oki earthquake (2013)
  • Author(s): T. Tonegawa, Y. Fukao, K. Nishida, H. Sugioka, and A. Ito
  • Journal Title: J. Geophys. Res Volume: 118 Pages: 607-615
• [Journal Article] Earth's background free oscillations, Ann. Rev (2013)
  • Author(s): K. Nishida
  • Journal Title: Earth Planet. Sci Volume: 41
• [Journal Article] Global propagation of body waves revealed by cross-correlation analysis of seismic hum (2013)
  • Author(s): K. Nishida
  • Journal Title: Geophys. Res. Lett
• [Journal Article] Earth's background freeoscillations, Ann. Rev (2013)
  • Author(s): K. Nishida
  • Journal Title: Earth Planet. Sci Volume: 41(in press) Issue: 1 Pages: 719-740
  • DOI: 10.1146/annurev-earth-050212-124020
  • Peer Reviewed
• [Journal Article] A temporal change of shear wave anisotropy within the marine sedimentary layer associated with the 2011 Tohoku-Oki earthquake (2013)
  • Author(s): Takashi Tonegawa, Yoshio Fukao, Kiwamu Nishida, Hiroko Sugioka, and Aki Ito
  • Journal Title: J. Geophys. Res. Volume: 118 Issue: 2 Pages: 607-615
  • DOI: 10.1002/jgrb.50074
  • Peer Reviewed
• [Journal Article] Global propagation of body waves revealed by cross-correlation analysis of seismic hum (2013)
  • Author(s): Kiwamu Nishida
  • Journal Title: Geophys. Res. Lett. Volume: in press Issue: 9 Pages: 1691-1696
  • DOI: 10.1002/grl.50269
  • Peer Reviewed
• [Journal Article] Seismic imaging of magma chamber beneath an active volcano (2012)
  • Author(s): Nagaoka, Y., Nishida, K., Aoki, Y., Takeo, M., Ohminato, T
  • Journal Title: Earth and Planetary Science Letters Volume: 1-8 Pages: 333-334
  • DOI: 10.1016/j.epsl.2012.03.034
  • Peer Reviewed
• [Journal Article] Seismic imaging of magma chamber beneath an active volcano (2012)
  • Author(s): Nagaoka, Y., K.Nishida, Y.Aoki, M.Takeo, T.Ohminato
  • Journal Title: EPSL Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] Temporal change of phase velocity beneath Mt. Asama, Japan, inferred from coda wave interferometry (2011)
  • Author(s): Y. Nagaoka, K. Nishida, Y. Aoki and M. Takeo
  • Journal Title: Geophys. Res. Let Volume: 37
• [Journal Article] Two-dimensional sensitivity kernels for cross-correlation functions of background surface waves (2011)
  • Author(s): K.Nishida
  • Journal Title: Comptes rendus Geoscience
• [Journal Article] Two-dimensional sensitivity kernels for cross-correlation functions of background surface waves (2011)
  • Author(s): Kiwamu, Nishida
  • Journal Title: Comptes rendus Geoscience Volume: 348 Issue: 8-9 Pages: 584-590
  • DOI: 10.1016/j.crte.2011.02.004
  • Peer Reviewed
• [Journal Article] Two-dimensional sensitivity kernels for cross-correlation functions of background surface waves (2011)
  • Author(s): Kiwamu Nishida
  • Journal Title: Comptes rendus Geoscience Volume: (掲載確定)
  • Peer Reviewed
• [Journal Article] Temporal change of phase velocity beneath Mt.Asama, Japan, inferred from coda wave interferometry (2011)
  • Author(s): Yutaka Nagaoka, Kiwamu Nishida, Yosuke Aoki, Minoru Takeo
  • Journal Title: Geophys.Res.Let. Volume: 37
  • Peer Reviewed
• [Journal Article] Enigmatic very low-frequency tremors beneath the Shonai plain in northeastern Japan (2010)
  • Author(s): K. Nishida and K. Shiomi
  • Journal Title: J. Geoph. Res. Volume: VOL.117 Issue: B11
  • DOI: 10.1029/2012jb009258
• [Journal Article] Inter-source body wave propagations derived from seismic interferometry (2010)
  • Author(s): Takashi Tonegawa, Kiwamu Nishida
  • Journal Title: GJI Volume: 183 Pages: 861-868
  • Peer Reviewed
• [Presentation] 地震波干渉法によるDONET観測データの解析 (2012)
  • Author(s): 西田究,藤亜希子,高橋成実,利根川貴志,深尾良夫
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 千葉
  • Year and Date: 2012-05-23
• [Presentation] Enigmatic very low frequency tremor beneath the Shonai plain in northern Japan (2011)
  • Author(s): Kiwamu Nishida, Katsuhiko Shiomi
  • Organizer: AGU fall meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2011-12-06
• [Presentation] 庄内平野で観測された奇妙な超低周波微動活動 (2011)
  • Author(s): 西田究、汐見勝彦
  • Organizer: 日本地震学会秋季大会
  • Place of Presentation: 静岡市(グランシップ)
  • Year and Date: 2011-10-14
• [Presentation] 庄内平野で観測された奇妙な超低周波微動活動 (2011)
  • Author(s): 西田究、汐見勝彦
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 千葉市(幕張メッセ)
  • Year and Date: 2011-05-23
• [Presentation] Hi-net高感度加速度計で観測された常時励起表面波 (2010)
  • Author(s): 西田究・深尾良夫・川勝均・汐兄勝彦
  • Organizer: 日本地震学会2010年秋季大会
  • Place of Presentation: 広島国際会議場(広島市)
  • Year and Date: 2010-10-29
• [Presentation] Two-dimensional sensitivity kernels for cross-correlation functions of background surface waves (2010)
  • Author(s): K. Nishida
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco
• [Presentation] Global propagation of body waves revealed by seismic interferometry, (2010)
  • Author(s): K. Nishida
  • Organizer: 2nd Neustadt Workshop on Noise and Diffuse Wavefields
  • Place of Presentation: Neustadt Germany
• [Presentation] 広帯域地震計で観測された捻れモードの常時励起
  • Author(s): 西田究
  • Organizer: 日本地震学会秋季大会
  • Place of Presentation: 函館・函館市民体育館
  • Invited
• [Presentation] 地震波干渉法による DONET 観測データの解析日本地球惑星科学連合大会
  • Author(s): 西田究
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 千葉・幕張メッセ
  • Invited
• [Remarks]
  • URL: http://www.eri.u-tokyo.ac.jp/knishida
• [Remarks]
  • URL: http://www.eri.u-tokyo.ac.jp/knishida
• [Remarks]
  • URL: http://www.eri.u-tokyo.ac.jp/knishida