동해에서 해류, 와류 그리고 어류의 거동

Abstract

In a highly successful 2-year set of measurements to observe the upper and deep currentsystems in the southwestern JES, we found they differ from the '3-currents paradigm(with seasonal modulation)' that had previously existed. The upper current systems andeddies varied strongly on 50 – 500 day time scales. The varying circulation patternscorresponded closely with the distribution of acoustic early-echoes from verticallymigrating targets that likely indicate squid or fish. These animals were concentratedalways near fronts between warm currents and the colder surrounding waters.