Quantitative examination of regional interaction among active faults

Research Project

Project/Area Number	21700858
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Geography
Research Institution	Nagoya University
Principal Investigator	SUGITO Nobuhiko Nagoya University, 環境学研究科, 研究員 (50437076)
Project Period (FY)	2009 – 2010
Project Status	Completed (Fiscal Year 2010)
Budget Amount *help	¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000) Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000) Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords	活断層 / 変動地形 / 地震 / 写真測量 / 地層掘削
Research Abstract	We examined regional interaction among active reverse faults quantitatively, to better understand magnitudes and recurrence patterns of large earthquakes. We conducted intensive surveys on the WFZNB (western margin reverse-fault zone of the Nagano basin). Our results imply that recurrence intervals are relatively irregular for the latest four large earthquakes although coseismic vertical displacements are almost the same at individual sites. Further investigations are needed to examine paleoseismic relationship between the WFZNB and the northern part of the ISTL (Itoigawa-Shizuoka Tectonic Line) active fault zone.