Spatial and temporal pattern of surface-rupturing earthquakes along the Philippine fault based on geomorphological and seismological investigations

2010 Fiscal Year Final Research Report

• Project/Area Number: 20403001
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Geography
• Research Institution: Kyoto University
• Principal Investigator: TSUTSUMI Hiroyuki 京都大学, 大学院・理学研究科, 准教授 (60284428)
• Co-Investigator(Kenkyū-buntansha): HIRAHARA Kazuro 京都大学, 大学院・理学研究科, 教授 (40165197)
• Co-Investigator(Renkei-kenkyūsha): NAKATA Takashi 広島工業大学, 環境学部, 教授 (60089779) ; SUGITO Nobuhiko 名古屋大学, 大学院・環境学研究科, 研究員 (50437076)
• Research Collaborator: DELA CRUZ Laarni. S. 京都大学, 大学院・理学研究科, 博士後期課程研究生 ; RAMOS Noelynna T. 京都大学, 大学院・理学研究科, 博士 ; PEREZ Jeffrey S. 京都大学, 大学院・理学研究科, 博士
• Project Period (FY): 2008 – 2010
• Keywords: 活断層 / フィリピン断層 / 変動地形 / 歴史地震 / 古地震 / 海成段丘 / 海溝型巨大地震 / 地震発生シミュレーション

Research Abstract

We identified an along-strike variation of seismic behavior of the Philippine fault from large surface-rupturing earthquakes to aseismic creeping based on geomorphic, historical earthquake, and paleoseismic data. We mapped the surface trace of the Philippine fault on 1 : 50, 000-scale topographic maps and made them available to the public on the homepage of the Philippine Institute of Volcanology and Seismology. Holocene raised coral reefs along the coast facing to the Philippine and Manila trenches suggest that the mega-thrust and related faults have generated large subduction zone earthquakes around the Philippines that caused uplift of the coastal areas on the order of several meters.

Research Products

• [Journal Article] Uplifted marine terraces in Davao Oriental Province (2011)
  • Author(s): Ramos, N. T., Tsutsumi, H., Perez, J. S., and Bermas, P. P. Jr.
  • Journal Title: Journal of Asian Earth Volume: 45 Pages: 114-125
• [Journal Article] Evidence of large prehistoric offshore earthquakes deduced from uplifted Holocene marine terraces in Pangasinan Province (2010)
  • Author(s): Ramos, N. T. and Tsutsumi, H.
  • Journal Title: Tectonophysics Volume: 495 Pages: 145-158
• [Presentation] Numerical simulation of earthquake cycles using depth-dependent frictional parameters (2012)
  • Author(s): Dela Cruz, L. S.
  • Organizer: 12th Philippine Computing Science Congress
  • Place of Presentation: フィリピン共和国ビナン市
  • Year and Date: 2012-03-01
• [Presentation] Along strike variation of seismic behavior of the Philippine fault based on historical-and paleo-seismicity (2011)
  • Author(s): Tsutsumi, H. and Perez, J. S.
  • Organizer: AGU Fall Meeting2011
  • Place of Presentation: アメリカ合衆国サンフランシスコ市
  • Year and Date: 2011-12-08
• [Presentation] 東南アジアの活構造と地震テクトニクス,故藤田和夫追悼シンポジウム (2010)
  • Author(s): 堤浩之
  • Organizer: アジアの山地形成論:日本列島からヒマラヤまで,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] Progress in seismic hazard evaluation of the Philippine fault zone through fault mapping and paleoseismic trenching (2010)
  • Author(s): Tsutsumi, H. and Perez, J. S
  • Organizer: 20th Year Commemoration of the 16 July 1990 Luzon earthquake "Harnessing Lessons Towards an Earthquake-Resilient Nation
  • Place of Presentation: フィリピン共和国ケソン市
  • Year and Date: 2010-07-15
• [Presentation] Large-scale digital mapping of the Philippine fault zone based on aerial photograph interpretation (2010)
  • Author(s): Tsutsumi, H. and Perez, J. S.
  • Organizer: HOKUDAN International Symposium on Active Faulting
  • Place of Presentation: 兵庫県淡路市
  • Year and Date: 2010-01-17
• [Presentation] Evidence for large prehistoric of fshore earthquakes along the Manila trench deduced from emergent Holocene coral reefs in Pangasinan Province, Luzon Island (2010)
  • Author(s): sutsumi, H. and Ramos, N. T.
  • Organizer: Philippines, HOKUDAN International Symposium on Active Faulting
  • Place of Presentation: 兵庫県淡路市
  • Year and Date: 2010-01-17
• [Presentation] Paleoseismic evidence along the Surigao segment of the Philippine fault zone, northeastern Mindanao (2010)
  • Author(s): Perez, J. S., Tsutsumi, H., Cahulogan, M. T., Ishimura, D., and Cabanlit, D. P.
  • Organizer: Philippines, HOKUDAN International Symposium on Active Faulting
  • Place of Presentation: 兵庫県淡路市
  • Year and Date: 2010-01-17
• [Presentation] Evidence of large earthquakes on the Surigao segment of the Philippine fault zone (2009)
  • Author(s): Perez, J. S., Tsutsumi, H., Ishimura, D., Cahulogan, M. T., and Cabanlit, D. P.
  • Organizer: northeastern Mindanao, Philippines
  • Place of Presentation: 日本活断層学会2009年度秋季学術大会
  • Year and Date: 2009-11-08
• [Presentation] 隆起サンゴ礁が示すマニラ海溝・フィリピン海溝の巨大地震発生履歴 (2009)
  • Author(s): 堤浩之・Noelynna T. Ramos・Jeffrey S. Perez
  • Organizer: 日本地理学会秋季学術大会
  • Place of Presentation: 沖縄県中頭郡西原町
  • Year and Date: 2009-10-24
• [Presentation] マニラ海溝・フィリピン海溝で発生する海溝型巨大地震の地形学的証拠 (2009)
  • Author(s): 堤浩之・Noelynna T. Ramos・Jeffrey S. Perez
  • Organizer: 2009年日本地理学会秋季学術大会
  • Place of Presentation: 千葉市
  • Year and Date: 2009-05-21
• [Presentation] Seismotectonic implications of uplifted coral reefs in the Philippines : A preliminary report (2009)
  • Author(s): Ramos, N. T., Tsutsumi, H., and Perez, J. S.
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 千葉市
  • Year and Date: 2009-05-20
• [Remarks] フィリピン断層帯の縮尺5万分の1の詳細活断層図(フィリピン火山地震研究所のホームページにて図幅毎に公開
  • URL: http://www.phivolcs.dost.gov.ph/index.Php?option=com_content & view=article & id=379 & ltemid=500023