한국환경과학회지 제29권 제3호 (p.273-282)

|ORIGINAL ARTICLE|
자란만 패류양식해역의 물리환경 설명을 위한 평균체류시간 산정

Assessing Average Residence Time as a Physical Descriptor for Shellfish Farming Areas in Jaran Bay, Korea
키워드 :
Residence time,Particle tracking model,Jaran Bay,Shellfish farm

목차

Abstract
1. 서 론
2. 재료 및 방법
   2.1. 사용모델
   2.2. 모델 구성
   2.3. 평균체류시간 계산
   2.4. 현장관측
3. 수치모의 결과
   3.1. 모델 검증
   3.2. 자란만의 해수순환 특성
   3.3. 입자추적모델 모의결과
   3.4. 평균체류시간 계산 결과
4. 결 론
REFERENCE

초록

Residence time is defined as the time taken for a material in a system to leave the system. The residence time characteristics in shellfish aquaculture determine the dispersion of excretion from aquaculture farms, along with the supply of food by seawater exchange. In this study, we estimated the spatial distribution of average residence time in the shellfish farming area using a particle tracking model. As a result, a relatively short average residence time of about 20 days or less was calculated in most areas, but an average residence time of more than 40 days was calculated in the inner areas. Relatively long average residence times were calculated along the west coast compared to the east coast, with the longest average residence time of more than 50 days in the northwestern areas. It can be inferred that the disturbance of the benthic ecosystem caused by shellfish farms is likely to be large because of the relatively weak dispersion of excrement from shellfish farms located on the west coast, especially in the northwest region. This distribution of average residence time is important for understanding the potential effects of seawater exchange on the environmental sustainability of shellfish farms, along with the seawater circulation characteristics of Jaran Bay.