学会誌「自然災害科学」

衛星リモートセンシングによる1983年4月久慈市林野火災の被害度分析

Damage Analysis of the April, 1983 Kuji Forest Fire by Using Satellite Remote Sensing

後藤 健介*・後藤 恵之輔**・豊福 高士***

Kensuke GOTOH*, Keinosuke GOTO** and Takashi TOYOFUKU***

Abstract

The aim of this study is to determine the optimum vegetation index for analysing damage due to a forest fire and to obtain a damage-degree map of the forest fire based on the optimum vegetation index, by using satellite remote sensing. The forest fire which occurred at Kuji City, Iwate Prefecture on April 27, 1983 was treated, Landsat/MSS data before and after the forest fire were used, and six vegetation indices namely RVI, DVI1, DVI2, NDVI, TVI and GVI were compared in order to decide the optimum vegetation index. The F-test together with the t-test was carried out for the ratio of the individual vegetation index before and after the forest fire resulting in it that DVI2 was the optimum. Lastly the damage-degree map of the forest fire was obtained by the optimum DVI2 vegetation index, being very appropriate in comparison with in-situ survey and the air photo analysis.

キーワード:

Key words: