2016 Fiscal Year Final Research Report
Tectono-geomorphologic studies on the uplift of coastal area characterized by long-wave and small-amplitude crustal movement
| Project/Area Number |
25350431
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geography
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| Research Institution | Toyo University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Keywords | 変動地形 / 海成段丘面 / 離水ベンチ / 海底活断層 |
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| Outline of Final Research Achievements |
In order to study the uplifting of coastal area characterized by long-wave and small-amplitude crustal movement, height of former shorelines of marine terrace surfaces, deformations of terrace surfaces, and emerged wave-cut benches are carefully analyzed. Study areas are Shakotan peninsula, Shimokita peninsula, Sanriku coast, Noto peninsula, and Kii peninsula.
Distributions of marine terrace surfaces, height changes of the former shorelines, and deformation of terrace surfaces, and wide flexural scarps on marine terraces surfaces toward the sea, indicate distinct crustal deformations. Emerged wave-cut benches are indicative of episodic and abrupt relative uplift. These tectonic features have been convincingly owing not to the long-term continuous uplifting but to the activity of marine active faults with episodic crustal uplifts. A pair of marine terrace and emerged bench strongly suggest that the uplift of coastal area has been co-seismic.
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| Free Research Field |
自然地理学
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