Accession Number : ADP002067

Title :   Accuracy of Direct Measurement of Mean Surface Water Velocity of the Kuroshio Using Multi-Temporal NOAA-6 Imageries,


Personal Author(s) : Tanaka,S. ; Sugimura,T. ; Nishimura,T. ; Hatakeyama,Y.

Report Date : JUN 1982

Pagination or Media Count : 12

Abstract : This paper discusses a method of directly measuring the mean surface velocity of the Kuroshio Current using multi-temporal NOAA-6/AVHRR imageries and investigating the accuracy of the measurements. The data from Channel 4 of the NOAA-6/AVHRR show the water temperature of the sea's surface; some special features such as a vortex, the so called 'Sea Mark', can be clearly recognized along the line formed by the meeting of different water masses. The NOAA-6 imageries can be observed about every 12 hours; two successive imageries can give use the drifting distance during that period. It distance is divided by time, the result is corresponding water velocity. The accurancy of current standard deviation. The velocity distribution map of the entire sea zone around Japan's bow-shaped islands was made by this means, namely, from time serial NOAA imageries and was then compared with the most recently published map of oceanic current by the Maritime Safety Board of Japan.

Descriptors :   *Remote systems, *Mapping, *Ocean currents, Ocean surface, Temperature, Velocity, Data acquisition, Remote detectors, Japan

Distribution Statement : APPROVED FOR PUBLIC RELEASE