渤海海峡南部海域表层沉积物分布特征及控制因素

• Published in: Hăiyang dĭzhĭ yu dĭsĭjĭ dĭzhĭ Vol. 35; no. 5; p. 19
• Main Authors: ZHANG, Wei, ZHOU Liancheng, WU Jianzheng, ZHU Longhai, HU Rijun, JIANG Shenghui
• Format: Journal Article
• Language: Chinese
• Published: Beijing Marine Geology and Quaternary Geology 01.01.2015
• Subjects: Coasts; Fluvial deposits; Grain size; Grain size distribution; Headlands; Islands; Mineralogy; Offshore; Particle size; Rivers; Rocky environments; Rocky shores; Sediment; Sediment samplers; Sediment samples; Sediments; Shoals; Size distribution; Skewness; Straits; Tidal currents; Waterways
• ISSN: 0256-1492
• DOI: 10.16562/j.cnki.0256-1492.2015.05.003

利用渤海海峡南部海域208个表层沉积物样品的粒度分析测试结果,结合矿物组分及动力条件,分析了沉积物的分布特征及其控制因素。结果表明:(1)表层沉积物类型丰富,以粗粒沉积物为主,含砾组分分布范围较广,主要位于岛陆之间水道、基岩海岸和登州浅滩附近海域;(2)粗粒沉积物分选差-极差,细粒沉积物分选好,偏态系数以正值为主,且东部海域高于西部海域;(3)东部海域表层沉积物为陆源残留沉积产物,西部海域为黄河及莱州湾西南部河流输入与东侧山东半岛岛屿冲刷供给的过渡区;(4)南部砂质海岸沉积物受波浪作用控制,外侧海域、岛陆之间水道及基岩岬角海域沉积物受潮流作用控制。