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題名 | The Use of Stationary Hydroacoustic Transducer to Study Diel and Seasonal Influences on the Distribution of Fish School in Water Adjacent to the Cooling Water Intake of Nuclear Power Plant III=利用定點垂直超音波幕偵測核能三廠進水閘門前水域魚群分布實態之研究 |
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作者 | 鄭景桓; 李國添; 廖正信; |
期刊 | 臺灣水產學會刊 |
出版日期 | 19921200 |
卷期 | 19:4 1992.12[民81.12] |
頁次 | 頁289-298 |
分類號 | 439.2 |
語文 | eng |
關鍵詞 | 分布; 水域; 核能三廠; 偵測; 魚群; 超音波; 超音波迅捷評估; 冷卻進水口; 魚群分佈行為; 核能三廠; Acoustic quick assessment; Diel an dseasonal distribution behaviour; Cooling water intake of nuclear power plant Ⅲ; |
中文摘要 | 核能電廠運轉必需使用大量冷卻用海水,本研究利用定點垂直超音波幕偵測進水口閘門前魚?之分布實態,結果發現入夜後魚?數目增加、魚群規模變大、現存生物量亦顯著增加,而且有浮昇之現象,顯示魚?通過冷?水渠道後,夜間大多漫游徘洄於進水閘門前之水域;但在落山風吹襲之時節,晚上魚?之出現率及現存量均減少,致使進水口魚?來游量與昏暗指數成負相關,又強烈低氣壓(颱風)來臨前,來游魚?量有顯著減少之傾向,反之颱風侵襲過後,來游量則比平日高出甚多。本研究初步證實以定點超音波幕法可偵測進水口來游魚?之定性、定量分布特性,不過由於水域之魚種組成複雜,如欲究明各魚種之分布行為,則有待進一步研究反射信號主體之判釋方法。 |
英文摘要 | The objective of this study was to investigate the diel and seasonal distributions of fish schools in the water adjacent to the intake of NPP III by hydroacoustic method. A fixed-location acoustic sampling technique was employed. Average backscattering strength, detection rate per minute and size index ere estimated to investigate distribution behaviour of fish schools. The results confirm the capability of hydroacoustic method to obtain considerable information on the behaviour of fish in the waters adjacent to the cooling intake of NPP III. However, both the fish behaviour and species composition in the study area is complicated and further research is needed to develop effective direct assessment techniques. |
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