Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)
- Volume 29 Issue 4
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- Pages.503-526
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- 1996
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
Regeneration Processes of Nutrients in the Polar Front Area of the East Sea 1. Relationships between Water Mass and Nutrient Distribution Pattern in Autumn
동해 극전선역의 영양염류 순환과정 1. 추계 수괴와 영양염 분포와의 관계
- Moon Chang-Ho (Department of Oceanography, Pukyong National University) ;
- YANG Han-Soeb (Department of Oceanography, Pukyong National University) ;
- LEE Kwang Woo (Department of Earth & Marine Sci., Hanyang Univ.)
- Published : 1996.07.01
Abstract
A synoptic survery of chemical characteristics in the last Sea of Korea was carried out at the 11 stations near Ullungdo in November, 1994 on board R/V Tam-Yang. On the basis of the vortical distribution patterns of temperature, salinity and dissolved oxygen, water masses in the study area are divided into five groups; 1) Tsushima Surface Water (TSW), 2) Tsushima Middle Water (TMW), 3) East Sea Intermediate Water (ESIW), 4) last Sea Proper Water (ESPW), 5) Mixed Water (MW). In the vertical profiles of nutrients, the concentrations were very low in the surface layer and increased rapidly near the thermocline. There was a slight decrease in the ESIW and the concentrations were constant with the depth below 300m except dissolved silicate which still increased with depth. Relatively high value of Si/P ratio (25.2) in ESPW, whick is the oldest water mass, suggests that Si is regenerating more slowly compared to other nutrients. The relatively high value of N/P ratio (18.6) in the surface layer might be related to high vertical eddy diffusivity
1994년 11월 탐양호를 이용하여 동해 극전선역의 11개 정점에서 CTD 관측과 동시에 화학적 성분들의 개괄적 분포특성을 최대 1,000m 깊이까지 조사하였다. 수온, 염분 및 용존산소 등의 수직분포를 보면 정점 C3 및 D5 남쪽으로