Current structure and volume transport of the Soya Warm Current in summer |
| |
| Authors: | Masaji Matsuyama Makiko Wadaka Taizo Abe Masaaki Aota Yoshio Koike |
| |
| Institution: | (1) Faculty of Marine Science, Tokyo University of Marine Science and Technology, Konan, Minato-ku, Tokyo 108-8477, Japan;(2) Okhotsk Sea Ice Museum Hokkaido, Moto-Mombetsu, Mombetsu, Hokkaido 094-0023, Japan |
| |
| Abstract: | ADCP, CTD and XBT observations were conducted to investigate the current structure and temperature, salinity and density distributions
in the Soya Warm Current (SWC) in August, 1998 and July, 2000. The ADCP observations clearly revealed the SWC along the Hokkaido
coast, with a width of 30–35 km and an axis of maximum speed of 1.0 to 1.3 ms−1, located at 20–25 km from the coast. The current speed gradually increased from the coast to a maximum and steeply decreased
in the offshore direction. The SWC consisted of both barotropic and baroclinic components, and the existence of the baroclinic
component was confirmed by both the density front near the current axis and vertical shear of the alongshore current. The
baroclinic component strengthened the barotropic component in the upper layer near the axis of the SWC. The volume transport
of the SWC was 1.2–1.3 SV in August, 1998 and about 1.5 SV and July, 2000, respectively. Of the total transport, 13 to 15%
was taken up by the baroclinic component. A weak southeastward current was found off the SWC. It had barotropic characteristics,
and is surmised to be a part of the East Sakhalin Current. |
| |
| Keywords: | Soya Warm Current barotropic current baroclinic current coastal boundary current temperature front density front volume transport |
| 本文献已被 SpringerLink 等数据库收录！ |
|
