山东荣成湾月湖地区的潟湖-潮汐汊道体系

STUDY ON THE EVOLUTION OF YUEHU LAKE-TIDAL INIET SYSTEM, RONGCHENG BAY,SHANDONG PROVINCE

潟湖－潮汐汊道体系为一复杂的反馈体系，其中任一参数的改变即可导致整个体系的复杂反映．以月湖为例探讨了潟湖地貌演化的过程中，及人工作用潟湖各主要参数的变化规律；提出了月湖目前由于人工围堵特别是残余坝基对潮流的限制作用，致使P／A值较高而饱满系数K值偏低，潟湖－潮汐汊道体系稳定性较差的问题．

Lagoon-tidal inlet system is a complex feedback sysetm. Any changes of some parameters can make a series response of the whole system. This paper emphases on the relationships be tween the parameters of the system during the morphological changes of the system. As the development of the flood tidal delta,the tidal entrance enlengthed and the lagoon areas decreased, resueting in reduction of the tide prism,and therefore. the lagoon-tidal inlet system is to be destroyed. Yuehu Lake is a semi-closed lagoon. Its evolution is speeded up by Such artificial activitles,as the dike in the tidal entrance and two prawn-ponds. Series effects on the stable of the lagoon-tidal inlet system caused by the dike and prawn-ponds are concerned. In order to keep the system stable,artificial work to enlarge the remaining base of dike is needed.