Development of Monte Calro Method for optimizing model parameter resolution and application

• Project/Area Number: 23740337
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Solid earth and planetary physics
• Research Institution: Nagoya University
• Principal Investigator: ITO TAKEO 名古屋大学, 環境学研究科, 助教 (40377982)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: MCMC法 / 確率密度分布 / GPU / 最適化 / MCMC / 非線形 / 逆問題 / ＭＣＭＣ / ＧＰＵ / 地震 / インバージョン / モンテカルロ法 / 逆解析 / 断層すべりインバージョン

Outline of Final Research Achievements

Many inverse problems of earth science are underdetermined problems. These problems will be change well-pose problem with prior information, which use no reason of physical condition. In this study, we optimize estimated parameters using Monte Carlo method. We applied several studies, such as estimate under ground structure, slip distribution, seismic mechanism and etc. In addition, we show that the Monte Carlo method is very efficient using GPU calculation.

Research Products

• [Journal Article] Isolating along-strike variations in the depth extent of shallow creep and fault locking on the northern Great Sumatran Fault (2012)
  • Author(s): T. Ito, E. Gunawan, F. Kimata, T. Tabei, M. Simons, I. Meilano, Agustan, Y. Ohta, I. Nurdin, D. Sugiyanto
  • Journal Title: J. Geophys. Res. Volume: 117 Issue: B6
  • DOI: 10.1029/2011jb008940
  • Peer Reviewed
• [Presentation] New Insight Into Recent Activity of the Northern Sumatran Fault, Indonesia From Geodetic and Geomorphic Observations (2014)
  • Author(s): Takao Tabei, Fumiaki Kimata, Takeo Ito, Hiroyuki Tsutsumi, Yusaku Ohta, Endra Gunawan, Tadashi Yamashina, Nazli Ismail, Irwandi Nurdin, Didik Sugiyanto, Irwan Meilano
  • Organizer: Asian Seismological Commission General Assembly
  • Place of Presentation: フィリピン
  • Year and Date: 2014-11-17 – 2014-11-20
• [Presentation] Geodetic and Geomorphic Evaluations of Earthquake Generation Potential of the Northern Sumatran Fault, Indonesia (2014)
  • Author(s): Takao TABEI, Fumiaki KIMATA, Takeo ITO, Endra GUNAWAN, Hiroyuki TSUTSUMI, Yusaku OHTA, Tadashi YAMASHINA, Nazli ISMAIL, Irwandi NURDIN, Didik SUGIYANTO and Irwan MEILANO
  • Organizer: GENAH2014
  • Place of Presentation: 松島
  • Year and Date: 2014-07-22 – 2014-07-26
• [Presentation] Spatio-temporal Distribution of Afterslip due to the 2011 Tohoku-Oki Earthquake Using 3-D Visco-Elastic FEM Green's Function (2014)
  • Author(s): Takeo ITO, Syota SUZUKI, Kachishige SATO, Mamoru HYODO
  • Organizer: GENAH2014
  • Place of Presentation: 松島
  • Year and Date: 2014-07-22 – 2014-07-26
• [Presentation] 粘弾性応答を考慮した2011年東北沖地震の余効すべりの時空間分布 (2014)
  • Author(s): 鈴木 翔太，伊藤 武男，里 嘉千茂，兵藤 守
  • Organizer: 日本地球惑星科学連合大会 2014年
  • Place of Presentation: 横浜
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] Crustal deformation detected by GPS observation network across the Sumatran fault system in northwestern Sumatra (2013)
  • Author(s): Takao Tabei, Takeo Ito, Fumiaki Kimata, Yusaku Ohta, Endra Gunawan, Nazli Ismail, Didik Sugiyanto, Irwandi Nurdin
  • Organizer: AGU Fall meeting
  • Place of Presentation: サンフランシスコ
• [Presentation] Crustal deformation detected by GPS observation network across the Sumatran fault system in northwestern Sumatra, Indonesia (2013)
  • Author(s): Takeo Ito
  • Organizer: The 3rd International Symposium on Earthquake and Disaster Mitigation
  • Place of Presentation: ジョグジャカルタ
  • Invited
• [Presentation] Slip distribution of the 2011 off the Pacific coast of Tohoku earthquake inferred from geodetic data (2012)
  • Author(s): Takeo Ito
  • Organizer: French-Japanese Seminar on Earthquakes and Tsunamis
  • Place of Presentation: 東京
  • Invited
• [Presentation] 2011年東北沖地震における余効すべりの時空間分布 (2012)
  • Author(s): 鈴木 翔太, 伊藤 武男, 兵藤 守, 里 嘉千茂, 野口 拓美
  • Organizer: 日本地球惑星科学連合 2012年大会
  • Place of Presentation: 千葉
• [Presentation] GPS観測網(AGNeSS)によるスマトラ断層の断層固着の空間変化 (2012)
  • Author(s): 伊藤 武男, Endra Gunawan, 木股 文昭, 田部井 隆雄, 太田 雄策, Meilano Irwan, Agstan, Nurdin Irwandi
  • Organizer: 日本地球惑星科学連合 2012年大会
  • Place of Presentation: 千葉
• [Presentation] モンテカルロ手法を用いた断層すべりに関する空間解像度の最適化手法の構築 (2011)
  • Author(s): 伊藤武男, 兵藤 守, 野口 拓美, 里 嘉千茂, 鷺谷威
  • Organizer: 日本測地学会講演会
  • Place of Presentation: 高山市
• [Presentation] スマトラ断層北西部の GPS 観測網内で連続して発生した地震
  • Author(s): 伊藤武男, Endra Gunawan, 太田雄策, 田部井隆雄, 木股文昭, Nazli Ismail, Didik Sugiyanto, Irwandi Nurdin
  • Organizer: 日本地震学会秋季大会
  • Place of Presentation: 横浜
• [Presentation] Crustal deformation detected by GPS observation network across the Sumatran fault system in northwestern Sumatra, Indonesia
  • Author(s): Takeo Ito
  • Organizer: Lecture for crustal deformation along the GSF
  • Place of Presentation: バンダアチェ
  • Invited
• [Book] スマトラ地震による津波災害と復興 (2014)
  • Author(s): 高橋誠，田中重好，木股文昭編著他
  • Total Pages: 404
  • Publisher: 古今書店