52 EIGHTH PACIFIC SCIENCE CONGRESS 



Hydrography of the northwestern part of Hokkaido in 1949 was 

 reported by K. Fukutomi and others (A Survey of Deep Sea Fish in 

 Northern Part of Japan Sea, 1950), of the region south of the Kurile 

 Islands and the southern part of Okhotsk Sea, by T. Tabata (TK, 10, 

 1952), of the northern and middle Okhotsk Sea in summer, 1942, by 

 K. Kajiura (JOSJ, 5, 1949, 19-27), of the area off the Tohoku district by 

 J. Fukuoka and T. Yusa (OM, 4, 1952, 57). 



Of the Kuroshio Current, we have several important works. T. 

 Ichiye discussed the hydrography in the Kuroshio area in February and 

 May, giving a theoretical explanation on the meander of this current, 

 the abnormal pattern off Shionomisaki by making use of jet stream 

 theory. He also made use of Rossby's theory of momentum concentra- 

 tion in concluding that the great cold water mass off the Shionomisaki 

 consists of the water upv^^eiled from deeper layers (KH, 2, 1951). He 

 and K. Tanioka also determined the distribution of chemical elements 

 on isentropic surfaces and discussed the effect of horizontal Austausch 

 at different points in the stream axis on TS-curves (PRO, 1950). 



The Central Meteorological Observatory, Tokyo, has carried out 

 hydrographic observations regularly in Sagami Bay in 1951 and 1952 

 and at the weather station (39°N, 153"E) and others (M. Koizumi, 

 KH, 1, 1950; Koizumi and J. Masuzawa, KH, 2, 1952; Koizumi and O. 

 Asaoka, KH, 1, 1950; Koizumi, KH, 2, 1952, T. Nan'niti, OM, 3, 1951, 

 27-48; M. Hanzawa, OM, 4, 1952; ROWJ, 1, 1953). 



Hydrographic observations were also carried out on the Antarctic 

 whaling grounds in the winter months 1950-51 by a fleet of Japanese 

 whalers. About 30 stations were occupied and the results analyzed (M. 

 Hanzawa, K. Kobayashi, K. Yoshida, and R. Marum.o, OM, 3, 1951). 



Hydrography of the two straits of Isaka-wan, the Akashi-seto and 

 Yuraseto, after heavy rain accompanying typhoon, was discussed by T. 

 Ichiye (PRO, 1949), Ariake Sea and the inland sea in western Kyushu, by 

 Nagasaki Marine Observatory in the summers of 1951 and 1952 to make 

 clear the Kuroshio and the Tsushima Currents in this region. Hydro- 

 graphic structure in the Tsushima Current area was discussed by T. 

 Tsujita with special reference to its fisheries importance. (Report of 

 the Committee on the Hydrographic Investigations in the Western Part 

 of the Japan Sea, 1952). T. Shinomura and M. Koizumi discussed the 

 hydrography along the section from Tori-Sima (Bonin Group) to off 

 Sanriku District (KH, 2, 1950, 55-74). 



The hydrography of the Kumihama Bay, a small inlet facing the 

 Japan Sea, was discussed by K. Hishida (OM, 2, 1950, 67). 



The annual variation of sea water temperature in Kii Suido was 

 discussed in detail by T. Ichiye. He shovv'ed the possibility of the fore- 



