Studies on earthquake cycles of continental transform faults based on surface geology and geomorphology

• Project/Area Number: 19403001
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Geography
• Research Institution: Hiroshima University
• Principal Investigator: OKUMURA Koji Hiroshima University, 大学院・文学研究科, 教授 (10291478)
• Co-Investigator(Kenkyū-buntansha): MAEMOKU Hideaki 広島大学, 大学院・教育学研究科, 教授 (50222287) ; GOTO Hideaki 広島大学, 大学院・文学研究科, 准教授 (40323183) ; KUMAMOTO Yakashi 岡山大学, 自然科学研究科, 准教授 (60285096)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000); Fiscal Year 2009: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2008: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000); Fiscal Year 2007: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
• Keywords: トランスフォーム / 地震サイクル / 地形計測 / 活断層 / 古地震学 / ロジックツリー / トレンチ掘削調査 / 考古地震学 / GPS / 衛星画像 / DEM / RTK / プレート内部変形

Research Abstract

Recurrence behavior and mechanism were studied on the continental transform of the North Anatolian fault in Turkey. Firstly, high-precision topographic survey of the recent surface ruptures and associated deformation was carried out using dual-frequency RTK-GPS receivers. Secondly, trenching study was conducted in the east of Gerede on 1944 rupture to precisely determine timing and offset of 5 recent events. Thirdly, uncertainties of magnitude forecastw were analyzed using logic-tree evaluation methods.

Research Products

• [Journal Article] RTK-GPSを用いた段丘面高度の精密測定に基づくナウマンゾウ産出層準の検討 (2010)
  • Author(s): 奥村晃史・出穂雅実
  • Journal Title: 化石研究会会誌 4 Pages: 23-26
  • Peer Reviewed
• [Journal Article] 活断層の分布はどのようにして認定されるのか-地形発達を論理的によみとく (2009)
  • Author(s): 後藤秀昭
  • Journal Title: 科学 7 9 Pages: 195-198
• [Journal Article] 空中レーザー計測による活断層変位地形の把握と変位量復元の試み (2008)
  • Author(s): 中田高・隈元崇・奥村晃史・後藤秀昭・熊原康博・野原壯・里優・岩永昇二
  • Journal Title: 活断層研究 29号 Pages: 1-13
  • NAID: 130003355435
  • Peer Reviewed
• [Journal Article] 空中レーザー計測による活断層変位地形の把握と変位量復元の試み (2008)
  • Author(s): 中田, 高, 隈元 崇, 奥村晃史, 後藤秀昭, 熊原康博, 野原 壮, 里優, 岩永昇二
  • Journal Title: 活断層研究 2 9 Pages: 1-13
  • NAID: 130003355435
  • Peer Reviewed
• [Journal Article] 地震規模予測の考え方の違いが長大活断層で発生する地震の強震動予測結果にもたらす影響の評価糸魚川-静岡構造線活断層帯北部・中部を人震源断層として- (2008)
  • Author(s): 栗山雅之, 隈元 崇, 関口春子, 岩田知孝
  • Journal Title: 自然災害科学 2 7 Pages: 45-67
  • Peer Reviewed
• [Journal Article] A fresh fault scarp identified in an urban district by Lidar survey:A case study on the Itoigawa-Shizuoka Line, central Japan (2008)
  • Author(s): Kondo, H., Toda, S., Okumura, K., and Takada, K.
  • Journal Title: Geomorphology 104
  • Peer Reviewed
• [Journal Article] Quatemary geology of earthquakes, a new horizon (2007)
  • Author(s): Koji Okumura
  • Journal Title: Quatemary Intemational 167 Pages: 310-310
• [Presentation] Slip History of the 1944 Rupture Segment on North Anatolia Fault Near Gerede, Turkey: Constraints on Earthquake Recurrence Models (2009)
  • Author(s): Koji Okumura, Thomas K Rockwell, Sinan O Akciz, Neta Wechsler, Ersen Murat Aksoy, Daisuke Ishimura
  • Organizer: American Geophysical Union 2009 Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2009-12-17
• [Presentation] Slip History of the 1944 Rupture Segment on North Anatolia Fault Near Gerede, Turkey : Constraints on Earthquake Recurrence Models (2009)
  • Author(s): Koji Okumura
  • Organizer: American Geophysical Union 2009 Fall Meeting
  • Place of Presentation: San Francisco, U.S.A.
  • Year and Date: 2009-12-17
• [Presentation] Regional Pa-leoseismology Within Tectonic Complexity of Plate Interior and Island Arcs: the Itoigawa-Shizuoka Tectonic Line Active Fault System in Central Japan (2008)
  • Author(s): Koji Okumuraa
  • Organizer: American Geophysical Union 2008 Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2008-12-14
• [Presentation] Research on active tectonics for nuclear safety before and after the 16 July 2007 earthquake off Kashiwazaki central Japan (2008)
  • Author(s): Koji Okumura
  • Organizer: 32nd International Geological Congress
  • Place of Presentation: Oslo, Norway
  • Year and Date: 2008-08-07
• [Presentation] トルコ・アナトリアプレートの内部変形と古地震 (2008)
  • Author(s): 奥村晃史
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 幕張
  • Year and Date: 2008-05-28
• [Presentation] Archaeoseismology of the Hittite Age in the Central Anatolia at Kaman, Turkey (2008)
  • Author(s): Koji Okumura
  • Organizer: Seismological Society of America 2008 Annual Meeting
  • Place of Presentation: Albuquerque, USA
  • Year and Date: 2008-04-17