발전소 취수구 막힘 현상 규명을 위한 동해에서의 난바다 곤쟁이의 이동 연구

Title
발전소 취수구 막힘 현상 규명을 위한 동해에서의 난바다 곤쟁이의 이동 연구
Alternative Title
Diel vertical migration and ontogenic migration of a euphausiid, Euphausia pacifica, in the eastern Korean water, with remarks on clogging of the cooling-water supply screen in the nuclear power plant
Author(s)
채진호; 황두진; 한창훈; 최현우; 김동성; 이재학
KIOST Author(s)
Choi, Hyun Woo(최현우)Kim, Dong Sung(김동성)
Alternative Author(s)
최현우; 김동성; 이재학
Publication Year
2003-12-05
Abstract
Large amounts of euphausiids have often clogged the drum screens of the cooling-water supply unit to cause temporal interruptions of electric power production at Uljin Nuclear Power Plant. While surface swarms for breeding of the euphausiids might be responsible for the malfunction, little is known about its ecology focused to relationships with the regional environment. Its distributional characteristics, especially related to diel rhythm and ontogenic migration is being investigated. We came in pursuit of zooplankter's distributional modes and migration using a ecosounder with 200 kHz transducer and sets of multiple towing nets from Oct 2002. High density demersal layers of a euphausiid, Euphausia pacifica, have been detected in the channel (the depth approximately 200 m) near extension of the Hupo Bank during the fall and winter. In the late spring in 2003, huge amounts of eggs and larvae of the euphausiids were collected from the waters nearer to the coast where the depth was approximately 100 m. The adults and larvae of euphausiids in all investigations have performed active diel vertical migration. Euphausiids were also significantly important food source to the mesopelagic and demersal fishes examined, arabesque greenling, Pleurogrammus azonus, and spinyhead sculpin, Dasycottus steiger. These observation of abundances, diel and ontogenic migration of the euphausiids may explain its high production attributed to the near waters off Uljin Nuclear Power Plant and clogging the cooling water supply screen.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32016
Bibliographic Citation
온배수학회지, pp.38, 2003
Publisher
온배수학회
Type
Conference
Language
Korean
Publisher
온배수학회
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