山东荣成湾沿岸输沙率及沙嘴的演化动态  

THE CALCULATION OF ALONGSHORE SILT DISCHARGE RATES AND EVOLUTION DEVELOPMENT OF SANDSPIT IN THE RONGCHENG BAY,SHANDONG PENINSULA

作　　者：王永红[1] 庄振业[1] 李学伦[2] 

机构地区：[1]青岛海洋大学地球科学学院,青岛266003 [2]青岛海洋大学出版社,青岛266003

出　　处：《海洋地质与第四纪地质》2000年第4期31-35,共5页Marine Geology & Quaternary Geology

基　　金：国家自然科学基金资助项目(49576285)

摘　　要：山东荣成湾发育了 NEE- SWW向约 10 km长的沙坝 ,通过沿岸输沙率的计算、沙源分析得出以下结论 :荣成湾沙坝的主要沙源为海底来沙和海岸来沙 ,其沿岸纵向净体积输沙率为 15 .5 2× 10 4m3/ a,为沙坝的形成和演化提供了物源基础 ;沙嘴各段输沙率的计算及相应段沙嘴层理剖面分析 ,揭示了沙嘴的动态演化趋势。The calculation of silt discharge rates and the evolution development of Rongcheng Bay sandspits,Shandong Peninsula tell us the following characteristics:(1)the whole tendency of mean annual transport of sand load is from NE to SW,moving to the spit,and its net volume silt discharge rate is 15 52×10 4 m 3/a,(2)the source of sand is mainly from the sea bottom and alongshore erosion,and(3)the spit is slowly moving seawards,which is indicated by the analysis of changes in silt discharge rates and bedding in different parts of the spit.

关 键 词：沿岸输沙率 沙源 沙嘴演化 荣成湾 山东半岛 

分 类 号：P737.14[天文地球—海洋地质]