Abstract
TM imageries of Landsat 5 in the area of the submarine volcano was received by NASDA of Japan, on Jan. 21, three days after the eruption. Using the data, the authors promptly conducted following analyses. Location and size of new island were measured. Temperatures of some objects were calculated from the values of Band-6 and as a result altitude of the volcanic smoke was estimated. In the process of classification of the objective area, they were found that volcanic smoke was distinguishable from cloud by Band-7 and that the distribution of floating volcanic products presented the slick phenomena of seawater.
