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FIRST IMAGE TAKEN BY A SENSOR CALLED OCTS ABOARD ADEOS

CAPTION OF IMAGE 1

This image shows the surface temperature of the Sea of Japan and the East China Sea at about 11:32am JST on October 1, 1996. The image, which covers an about 1,400km (in the direction of the observation span of the sensor) x 2,000km (in the forward direction of the satellite) area, was taken at the infrared bands by the Ocean Color and Temperature Scanner (OCTS) aboard the Advanced Earth Observation Satellite (ADEOS). The image was taken and processed as to verify the sensor's function. Apart from land and the clouds, the temperature of a place is shown by its color which is defined, by the color bar at the right-bottom corner of the image, that the temperature increases as the color changes from violet to red, while the absolute value of the temperature will be determined by future calibration. Land, like the Kyushu island and the Korean peninsula seen in the center, is shown black in the image, and the clouds whose temperature is below -2 degree Celsius is shown white.

Part of the warm Kuroshio Current can be seen streaming from the East China Sea to the Sea of Japan through the Tsushima and Korea Straits, where the name of the current is changed to the Tsushima Current. Cold water from a river is spreading along the coast near Vladivostok. The surface temperature of the sea is changing drastically along the front where the cold water in the north part of the Sea of Japan and the warm Tsushima Current meet and vortexes in various sizes are being generated. This area forms so good a fishery that more fishes are said to be here than in a place which has plain distribution of its water surface temperature. According to a fishery information provider, it turned out that the area which have vortexes, north of the Yamato bank, coincides approximately with a fishery of squids, while the areas right south of Cheju-do Isaland and right north of Tsushima Islands correspond with a fishery of mackerel. More specified determination of the positions of fisheries can be achieved by the combination of such an image as this, showing the distribution of the surface temperature of the sea, and such, showing the distribution of the concentration of plant plankton's pigments, as one which was published on September 13, 1996.

OCTS can obtain this kind of images from the whole sphere within each three days. After ADEOS goes into the routine operation phase in mid-November, the OCTS data at infrared wavelength will be transmitted on quasi-real time basis to Japan's Meteorological Agency and a fishery information provider in order to be used for such as weather forecasts and fishery estimates.


Main Characteristics

For further information, please contact;
Hideo Hasegawa (Ph.D.) or Yoko Inomata (Ms.) / JAXA P. R. Office
Phone: (International)+81-3-6470-4127/(Domestic) 03-5470-4127
Fax: (International)+81-3-5402-6513/(Domestic) 03-5402-6513


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