Direct Measurements of Deep Currents in the Northern Japan Sea |
| |
| Authors: | Masaki Takematsu Zentaro Nagano Alexander G Ostrovski Kuu Kim Yuri Volkov |
| |
| Institution: | (1) Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan;(2) Department of Oceanography and Research Institute of Oceanography, Seoul National University, Seoul, 151-742, Korea;(3) Far Eastern Regional Hydrometeorological Research Institute, 24 Fontannaya St., Vladivostok, Russia |
| |
| Abstract: | Long-term current measurements by means of subsurface moorings were made for the first time at seven sites in the Japan Basin,
the northern part of the Japan Sea. The objective was to directly explore the velocity field in the highly homogeneous deep
water mass (the Japan Sea Proper Water) that occupies depths below 500 m. On each mooring three current meters were equipped
at an approximately equal distance below about 1000 m depth. Duration of the measurements was 1 to 3 years depending on specific
site. This paper describes the basic data set from the moored measurements. It is found that the deep water of the Japan Basin
is very energetic with eddies and vertically coherent currents of the order of 0.1 m/s. Surprisingly, the currents and eddies
exhibit strong seasonal dependence even in the deepest layers of the Basin. The observed new current features are discussed
in comparison with conventional deep circulation pictures derived from hydrographic data.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
| Keywords: | Japan Basin subsurface moorings strong deep circulation eddy-like currents seasonal changes Liman Current |
| 本文献已被 SpringerLink 等数据库收录！ |
|
