하천수 유입에 따른 인천 연안해역의 수질특성 분석
Analysis of Water Quality Characteristics of the Incheon Coastal Area by the Inflow of Stream Water
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초록
이 연구에서는 인천 연안해역으로 유입되는 하천수가 해역 수질에 미치는 영향을 분석하기 위해인천 7, 인천 6, 인천 17 해역을 대상으로 해양환경측정망에서 측정한 조사결과를 이용하여 분석하였다. 2015년~2019년 여름철(8월)과 겨울철(2월) 자료를 이용하고 계절별 및 거리별로 구분하여 유입하천수의 영향을 비교분석 하였으며, 상관분석 및 주성분 분석 기법을 통해 영향 정도를 정량적으로나타내었다. 계절별 분석결과, 인천 7(여름철) 해역의 경우 전체 수질특성의 61.2%가, 인천 7(겨울철) 해역의 경우 20%가 유입 하천수의 영향으로 나타나 여름철의 유입하천수 영향이 더 큰 것을 알수 있었다. 거리별 분석결과, 인천 7(여름철) 해역은 61.2%, 인천 6(여름철) 해역은 46.45%, 인천 17 (여름철) 해역은 9.65%를 보이며 육상에서 멀어질수록 유입하천수의 영향이 낮아지는 것을 알 수있었다.
Abstract
This study aims to investigate the effects of the influent rivers into the coastal waters of Incheon on the water quality of the sea area by analyzing the survey results of the national marine environment measurement network for the sea areas, Incheon 7, Incheon 6, and Incheon 17. Using the data from the summer (August) and winter seasons (February) from 2015 to 2019, the effects of the influent rivers were compared and analyzed by season and distance from the land, and the degree of influence was quantitatively expressed by correlation analysis and principal component analysis. As a result of the analysis by season, 61.2% of the total water quality characteristics of Incheon 7 were influenced by the influent rivers in summer, and 20% in winter, indicating a greater influence of the influent rivers in the summer. As a result of the analysis by distance from the land, 61.2% of the water quality characteristics were affected in Incheon 7 (summer), 46.45% in Incheon 6 (summer), and 9.65% in Incheon 17 (summer), indicating that the effect of influent rivers decreased as the distance from the land increased.
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