Examination of changes and recovery processes of coastal landform after severe erosion by the 2011 Tohoku-oki Earthquake Tsunami, northeastern Japan
Project/Area Number |
25350419
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Geography
|
Research Institution | Hirosaki University |
Principal Investigator |
Koiwa Naoto 弘前大学, 教育学部, 教授 (70296002)
|
Co-Investigator(Kenkyū-buntansha) |
ITO AKIFUMI 山形大学, 人文学部, 准教授 (40381149)
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
|
Keywords | 地形変化 / 津波 / GPS / キネマティック測量 / 航空写真測量 / 海浜地形 / 修復 / GIS / GPS測量 / DEM / 土砂 / 海浜 / 海岸侵食 / 東北地方太平洋沖地震 |
Outline of Final Research Achievements |
The 2011 Tohoku-oki Earthquake Tsunami altered coastal landforms. Reportedly, it caused remarkable coastal erosion. To elucidate the processes of recovery from the tsunami event, the authors have monitored coastal landform changes through interpretation of sequential topography maps based on measurements by high-resolution GPS in field surveys and aerial photogrammetry. Results of this study clarify that the coastal landforms of invested area have recovered approximately 60-80% in volume compared to the volume eroded by the tsunami, and the sediments for the recovery have been supplied from upstream of coastal drift.
|
Report
(4 results)
Research Products
(7 results)