海口湾东部海域淤积趋势机制分析  

ANALYSIS OF SILTATION TREND AND MECHANISM IN THE EASTERN SEA AREA OF HAIKOU BAY,HAINAN,CHINA

作　　者：曹永港 白玉川[3] 陈宜展[1] 邓丹 欧阳永忠 冯砚青 江林 廖世智 肖志建 CAO Yong-Gang;BAI Yu-Chuan;CHEN Yi-Zhan;DENG Dan;OUYANG Yong-Zhong;FENG Yan-Qing;JIANG Lin;LIAO Shi-Zhi;XIAO Zhi-Jian(South China Sea Marine Survey and Technology Center,State Oceanic Administration,Guangzhou 510300,China;Key Laboratory of Marine Environmental Survey Technology and Application,Ministry of Natural Resources,Guangzhou 510300,China;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China)

机构地区：[1]国家海洋局南海调查技术中心,广东广州510300 [2]自然资源部海洋环境探测技术与应用重点实验室,广东广州510300 [3]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《海洋与湖沼》2022年第4期906-916,共11页Oceanologia Et Limnologia Sinica

基　　金：国家自然科学基金资助项目,42174013号;广东省海洋经济发展(海洋六大产业)专项资金项目,粤自然资合[2021]38号;国家海洋局南海分局海洋科学技术局长基金,180106号。

摘　　要：海口湾东部是南渡江西北新三角洲受水受沙盆地,一直以来是典型的淤积海域。通过历史卫星影像分析海口湾东部浅滩的沉积过程,研究不同时间的湾内表层沉积物分布规律,采用遥感和实测悬浮颗粒物数据认知悬移质泥沙运动规律,借助沉积物粒径趋势分析推移质泥沙运动规律,对海口湾东部海域淤积趋势以及机制进行宏观分析。结果表明:海口湾东部浅滩的多个沙坝生成于不同的围海填地阶段;人类活动建造的向湾内伸突的人工构筑物,减弱了海口湾东部浅滩的潮流和波浪作用,进而导致泥沙在“葫芦岛项目”东部和南部海域沉积。了解海口湾东部海域泥沙运动规律以及海域淤积机制,是解决该海域淤积问题的基础。As a typical silting area,the eastern shoal of Haikou Bay is a basin receiving water and sediments,which is in a new delta northwest of Nandu River.The sedimentation process of a sand bar in the eastern Haikou Bay were analyzed using historical satellite images.The distributions of surface sediments in the bay in different periods and suspended sediment movement in the eastern Haikou Bay were studied by using remote sensing and inversion of suspended sediment measurement.Macroscopic analysis on the sedimentation trend and mechanism in the eastern Haikou Bay was also performed.Results show that the positions of sand bars were resulted from sedimentation due to reclamation in the eastern Haikou Bay in different periods.Artificial constructions at the top area of the central Haikou Bay protruded into the bay,which has weakened the tidal current of the eastern Haikou Bay,thus resulted in the siltation in the areas east and south to the Hulu Island.Understanding the law of sediment movement and the siltation mechanism in the eastern sea area of Haikou Bay is the basis for solving the siltation problem in the sea area.

关 键 词：海口湾 浅滩 悬浮颗粒物 表层沉积物 泥沙沉积 

分 类 号：P737.1[天文地球—海洋地质]