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인공호소인 영산호의 용존산소 분포와 수층 성층구조의 연관성 분석 KCI 등재

Exploring the Dynamics of Dissolved Oxygen and Vertical Density Structure of Water Column in the Youngsan Lake

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

The Youngsan Lake was constructed to supply agricultural water to the extensive rice fields in the basin of the lake in 1981. Hypoxia has often developed in the bottom water of the lake during the warm season although the water depth is relatively shallow (< 16 m). We investigated the spatial and temporal variations of dissolved oxygen (DO) and physical properties such as water temperature, salinity and turbidity to elucidate the effects of change in physical properties on DO dynamics in the lake. Vertical profiles of DO, temperature, salinity, and water density were also explored to verify the development of stratification in relation to DO variation in the water column. Hypoxia (DO < 2 mg L-1) was not observed in the upper regions whereas hypoxia was detected in the lower regions during the warm season. Thermocline generally developed in the lower regions during the warm season unlike the previous studies in which no thermocline was observed. However, water column was well mixed when freshwater water was discharged from the reservoir through the sluice gate of the dike. DO concentrations also decreased when halocline or pycnocline developed during the dry season suggesting that the vertical stratification of water column affects DO dynamics although the water depth is shallow in the Youngsan lake.

목차
Abstract
 1. 서론
 2. 재료 및 방법
  2.1. 조사 정점
  2.2. 용존산소와 물리적 환경인자 조사
  2.3. 통계 분석
 3. 결과 및 고찰
  3.1. 영산호 기상 및 담수 방류
  3.2. 용존산소의 공간·시간적 변동
  3.3. 수층 구조와 용존산소 분포의 연관성
 4. 결론
 REFERENCE
저자
  • 송은숙(해양수산정책기술연구소) | Yong-Sik Shin (Research Institute for Coastal Environment and Fishery/Policy)
  • 조기안(초당대학교 의약관리학과) | Yong-Sik Shin (Department of Medicine Management, Chodang University)
  • 신용식(목포해양대학교 환경·생명공학과) | Yong-Sik Shin (Department of Environmental Engineering and Biotechnology, Mokpo National Maritime University) Corresponding author