Low-Frequency Temperature Variability at Fukue Island Located Southwest of the Tsushima Straits |
| |
| Authors: | Atsuyoshi Manda Atsuhiko Isobe Kouichi Omura Yusaku Kyozuka |
| |
| Institution: | (1) Department of Earth System Science and Technology, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga Koen, Kasuga, 816-8580, Japan;(2) Department of Earth System Science and Technology, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga Koen, Kasuga, 816-8580, Japan;(3) Chikuzenkai Regional Laboratory, Fukuoka Prefectural Fisheries and Marine Technology Research Center, 1141-1, Imazu, Nishi-ku, Fukuoka, 819-0165, Japan |
| |
| Abstract: | Sea surface temperature (SST) and sea surface salinity variations at Fukue Island (located southwest of the Tsushima Straits) were investigated. In spring, low-frequency SST fluctuations with periods of 10–20 days predominate. Synthetic analysis of in situ observation and satellite infrared image reveals that these SST fluctuations are caused by movement of mixed warm water masses which have a temperature intermediate between those of the Kuroshio and the East China Sea (ECS) shelf waters. Since these fluctuations do not correspond with those in the Tsushima Straits, it is indicated that these water masses can hardly pass the Tsushima Straits while retaining their original water properties. In July, SST fluctuations with a period of several days are also found at Fukue Island. Since these SST fluctuations show an opposite correspondence with its salinity fluctuations and a good correspondence with the SST fluctuations at Okinoshima in the Tsushima Straits, it is inferred that warm and low-salinity water originated from the ECS shelf water causes these fluctuations and intrudes into the Tsushima Straits. |
| |
| Keywords: | Mixed warm water mass low-salinity water Tsushima Straits East China Sea |
| 本文献已被 SpringerLink 等数据库收录！ |
|
