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[Ｆ−５.３.１　Studies on the Algorithm for Long-term Monitoring of Coral Reef from High Resolution Satellite Images]


[Contact person]

      Kiyoshi Kawasaki
      Section Chief
      Ocean Dynamics Section
      Marine Productivity Division
      National Research Institute of Fisheries Science, Japan
      Fisheries Agency, Ministry of Agriculture, Forestry, and Fisheries
      TEL +81-45-788-7615 FAX +81-45-788-5001
      E-mail: kkawasak@affrc.go.jp


[Total Budget for FY1997-1999]

　7,773,000 Yen
　(FY 1999; 2,414,000 Yen)

［Abstract］

　The algorithm for detecting long-term variation of coral reef was developed from LANDSAT-TM images. The spatial and time domain anomaly of logarithm of pixel value is good for correction of air condition, sun angle, and tidal level change. The most weighty variation around Ishigakizima Island was related to the coral bleaching arose in 1998.


［Key Words］

　Satellite Image, Coral area, Vsual Image, Monitoring, Coral Bleaching