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제주도 연안의 해황특성에 관한 연구 : 성산포를 중심으로
변창익,정용진,노홍길 제주대학교 해양연구소 1983 해양자원연구소연구보고 Vol.7 No.-
The paper describes the oceanographic condition characteristic of the coastal are a around Seongsan harbour and the Udo strait from June 1980 to June 1981. The region influenced by fresh water was limited within Seongsan harbour, indicating the tendancy of the effect by off shore water mass in the Udo strait. In spring and autumn salinity was much more than 34‰ and in sunmer lower than any other season. During the time of observation in Udo strait, water temperature ranged from 13℃ to 24.5℃, and salinity from 32.00‰. to 34.50‰. Maximun and minimum water temperature appears in August and April respectively. Salinity was, however, the opposite of the water temperature. The region from the central part so southern tip of the Udo strait was much influenced by off shore water. Surface and bottom waters were mixed well in this strait with each other. Results of surface water temperature during ten years (1970-1979) and in July 1981 indicated the appearance of cold water mass around Seongsan in summer.
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濟州島 沿岸의 海況特性에 關한 硏究 : 城山浦를 中心으로 Water around Seongsan
邊昌翊,鄭龍晋,盧洪吉 濟州大學校 海洋資源硏究所 1983 해양과환경연구소 연구논문집 Vol.7 No.-
1980年 6月부터 1981年 6月까지 成山港 및 牛島水道를 中心으로 沿岸域의 海港特性을 調査 硏究한 結果를 要約하면 다음과 같다. (1) 牛島水道 大體로 外洋性水塊로 陸水의 影響은 域山港內에 局限한 되었고, 봄철과 가을에 34% 二下의 高鹽이, 여름철에 가장 低鹽이 나타났다. (2) 調査其間中 水溫과 鹽分分布 範圍는 牛島水道의 경우 水溫이 13∼24℃, 鹽分이 32.00∼34.50%였으며, 最高水溫은 8월, 最低水溫은 4月, 最高 및 最低鹽分은 各各 4月과 8月에 나타났다. (3) 牛島水道에서 外海水의 影響을 가장 많이 받는 곳은 牛島水道의 中央部에서부터 牛島南端까지였다. (4) 牛島水道는 夏李라 할지라도 表層과 底層水間의 鉛値混含이 比較的 잘 이루어지며, 또 牛島附近은 여름철에 자주 冷水가 出現하는 경향을 보였다. The paper describes the oceanographic condition characteristics of the coastal area around Seongsan harbour and the Udo strait from June 1980 to 1981. The region influenced by fresh water was limited within Seongsan harbour, indicating the tendancy of the effects by off shore water mass in the Udo strait. In spring and autumn salinity was much more than 34‰, and in summer lower than any other season. During the time of observation in Udo strait, water temperature ranged from 13℃ to 24.5℃ and salinity from 32.00‰, to 34.50‰. Maximun and minimum water temperature appears in August and April respectively. Salinity was, however, the opposite of the water temperature. The region from the central part to southern tip of the Udo strait was much influenced by off shore water. Surface and bottom waters were mixed well in this strait with each other. Results of surface water temperature during ten years (1970-1979) and in July 1981 indicated the appearance of cold water mass around Seongsan in summer.
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濟州島 沿岸의 水中騷音 -Ⅰ : 濟州港과 楸子島사이 Between Cheju Harbor and Chuja Island
鄭龍晋,邊昌翊,徐斗玉 濟州大學校海洋資源硏究所 1986 해양과환경연구소 연구논문집 Vol.10 No.-
濟州港과 楸子島를 연결하는 線上의 3個點을 測定位置로 하여 水中騷音을 測定하고, 이것을 測定周波數에 따른 音壓準位로 分析한 結果를 要約하면 다음과 같다. 1) 濟州港과 楸子島 사이의 水中騷音은 夜間에 높고 晝間에 낮으며, 測定點에서 音壓準位의 平均値의 差는 測定點 A, B, C에서 各各 3.7∼14.0 dB, 6.3∼9.1 dB, 10.0∼15.3 dB 였다. 2) 測定點에 對한 수직적인 平均音壓準位는 周波數 75Hz의 水深 20m, 50m, 100m에서 A는 各各 105.7 dB, 107.2 dB, 107.5 dB, B는 各各 105.7 dB, 103.9dB, 105.9 dB, C는 103.0 dB(20m), 105.8 dB(50m)였다. 3) 測定點에 對한 수평적인 平均音壓準位는 周波數 75Hz의 水深 20m, 50m, 100m에서 各各 104.8 dB, 105.6 dB, 106.7dB였다. 周波數 75∼5000Hz에서 音壓準位의 平均은 水深 20m, 50m, 100m에서 各各 83.3 dB, 84.4 dB, 85.9dB였다. 4) 3個 測定點에서 周波數 75Hz 最高値의 平均音壓準位는 測定點 A, B, C에서 各各 108.4 dB, 107.4 dB, 108.1 dB였다. Underwater ambient noises were investigated at three stations (A, B and C) connected to a straight line from Cheju harbor to Chuja Island. The underwater ambient noise was present as a sound pressure level for each measured frequence. The results were as follows: 1) The underwater ambient noises were high at nighttime but low at daytime. The differences of each value of average sound pressure level at station A, B and C were 3.7-14.0 dB, 6.3-9.1 dB and 10.0-15.3dB, respectively. 2) The vertical sound pressure level of each station was measured at 20m, 50m and 100m in the depth of water. The values of station A 105.7dB, 107.2dB and 107.5dB, respectively. The Values of station B were 105.7dB, 103.9dB and 105.9dB, respectively. The values of station C were 103.0dB at 20m and 105.8dB at 50m. 3) Each value of horizontal sound pressure level at station A, B and C was 104.8dB at 20m, 105.6dB at 50m and 106.7dB at 100m in the depth of water. Each mean values of sound pressure level from 75 to 5000Hz was 83.3dB at 20m, 84.4dB at 50m and 85.9dB at 100m in the depth of water, respectively. 4) Each mean values of maximum sound pressure level at 75Hz was 108.4dB at station A, 107.4dB at station B and 108.1dB at station C.
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