124 126 128 



WATERS SURROUNDING JAPAN 



-—3 COLD WATER -MASSES (OYA CURRENT, JAPAN SEA MASSES) 



^H WARM WATER MASSES 



^^ ZONES OF MIXING BETWEEN LARGE MASSES, AND UPWELLlNGS 



WINTER FRONT OF OYA COLD WATER MASS 



SUMMER EXTENT OF JAPAN SEA WARM CURRENT 



