| Project/Area Number |
25560176
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Natural disaster / Disaster prevention science
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| Research Institution | Fukui University of Technology |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 津波瓦礫 / 日本海漂流ゴミ（海ゴミ） / スペクトル異常 / Spectral Angle Mapper / 白波 / 衛星リモートセンシング / 海ゴミ / 高解像度衛星画像 / スペクトル / 回帰直線 / SAM / 衛星画像 / SST画像 / Chl-a濃度画像 |
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| Outline of Final Research Achievements |
In order to monitor the tsunami debris that flowed into the Pacific Ocean due to the 2011 off the Pacific coast of Tohoku earthquake, we developed new methods to extract tsunami debris using medium- and low-resolution satellite images and verified its effectiveness. Using these methods, even tsunami debris floating on turbid sea areas through thin clouds can be extracted.
Next, we developed new methods for extracting marine debris drifting in the Sea of Japan. The small size of most marine debris means that marine debris cannot be confirmed directly, even when using high-spatial-resolution satellite imagery. Thus, in order to extract candidate pixels containing possible marine debris, pixels with spectra that differ from those of the surrounding ocean and the wave crests were identified.
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