锦州湾滩地动力地貌特征及其冲淤变化  

THE HYDRAULIC GEOMORPHOLOGICAL FEATURE AND THE CHANGE OF BEACH FACE IN JINZHOU BAY

作　　者：符文侠 李光天[1] 刘国贤[1] 

机构地区：[1]国家海洋局海洋环境保护研究所

出　　处：《地理研究》1994年第2期11-19,共9页Geographical Research

摘　　要：本文阐述了锦州湾滩地动力地貌特征，海滩剖面形变，潮滩微地貌类型与横向分带性；并采用潮滩剖面重复水准测量、新老海图对比和￣（２１０）ｐｂ沉积速率测定等方法着重讨论了潮间浅滩和水下浅滩的冲淤变化。新老海图对比值为４－６ｍｍ／ａ，￣（２１０）ｐｂ沉积速率测定为１－５ｍｍ／ａ，湾内泥沙输沙量估算为２－４ｍｍ／ａ，三个量值基本接近。Jinzhou Bay,Beach face,Hydraulic geomophology Abstract Throughseveral yearhdd investigation and data analsis in laboratary in the area of the Jinzhou Bay,this paper described the hydraulic geomorphological feature of the beach face, the changes of beach profiles,the micromorphology and zoning,and then discussed thechange of tidal flat zone and underwater shallow zone by the methods of the repeated,surveythe comparison between old and new charts and the determination of sedimentation rate.The tidalflat of the bay is dominated by week accumulation,and the accumulation ismore intersive flood perild which is about 11-25 mm The two sides of the river are mainlydominated by erosion in flood period and the mean erosion depth is 16-35 mm,and even deep-er in the center of the eriver.The shallow zone which is 0-5m under water is not affected byabrupt erosiOnaccumulation,and belongs to a stable part.The accumulation estimated is 6 mm/a by the comparis on beween old and new charts.The sedimentation rate is 1-5 mm/a by the determination of 21pb of the 7 core samples and2-4 mm/a by silt calculation, The three methods show almost the same results.

关 键 词：锦州湾 滩地 动力地质学 冲淤变化 

分 类 号：P737[天文地球—海洋地质]