Abstract

At least thirteen distinct end members of water-masses are identified in the western Japan Sea. Their origins and conditions of formation are discussed, including the effects of continental water inputs, photosynthesis in remnant winter waters, microbial oxidation of organic matter in the water column or at water-sediments interface, and the cooling of surface waters along the Siberian coast and the northern Japan Sea.

Highlights

  • The Japan Sea is bounded by the Japanese islands, the Siberia and the Ko1·ean Peninsula, and has a total area of 1.013 x 106 km2 and a \1olume of 1.69 x I06 km3

  • Major water masses in the Japan Sea were identified by Yasui et al ( 1 967), using the distribution of estimated wate.r \,olume as functions of potential temperature (8) and salinity

  • The objectives of this paper are to (I) identify all possible end members of water-masses in the Japan Sea using the high quality data obtained during the Kuroshio Edge Exchange Processes- Marginal Seas Study (KEEP-MASS) expedition (Chen and Bychkov, 1992) and (2) discuss their origins

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Summary

INTRODUCTION

The Japan Sea is bounded by the Japanese islands, the Siberia and the Ko1·ean Peninsula, and has a total area of 1.013 x 106 km and a \1olume of 1.69 x I06 km. From the Kuroshio Current and flows into the Japan Sea through the Tsushima Strait with a magnitude of about 3 to 4 x 106 m3 /se.c (Miita and Ogawa, 1984 ). A portion of water flows out of the Japan Sea through the Tsugaru and Soya Straits. Major water masses in the Japan Sea were identified by Yasui et al ( 1 967), using the distribution of estimated wate.r \,olume as functions of potential temperature (8) and salinity. Their approach has a few shortcomings in that the identified water masses have. The objectives of this paper are to (I) identify all possible end members of water-masses in the Japan Sea using the high quality data obtained during the Kuroshio Edge Exchange Processes- Marginal Seas Study (KEEP-MASS) expedition (Chen and Bychkov, 1992) and (2) discuss their origins

SAMPLING AND ANALYTICAL METHODS
RESULTS AND DISCUSSION
SUMMARY

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