Development of new index for forest fire risk using satellite images in Indonesia through the direct spectral measurements of soil

Asahi Hashimoto1, Moka Akita1, Yuito Takahashi1, Hikaru Suzuki1, Yoko Hasegawa1, Yuka Ogino1, Nobuyasu Naruse2 and Yukihiro Takahashi1, (1)Hokkaido University, Sapporo, Japan, (2)Hokkaido University, Global Science Campus and Institute for the Advancement of Higher Education, Sapporo, Japan