首页 | 本学科首页   官方微博 | 高级检索  
     检索      

珠江口伶仃洋地貌特征演变与纳潮能力变化研究
引用本文:宫清华,周晴,李平日,刘旭拢.珠江口伶仃洋地貌特征演变与纳潮能力变化研究[J].海洋学报,2019,41(1):98-107.
作者姓名:宫清华  周晴  李平日  刘旭拢
作者单位:广东省科学院 广州地理研究所,广东 广州 510070;广东省地理空间信息技术与应用公共实验室,广东 广州510070;广东省科学院 广州地理研究所,广东 广州 510070;广东省地理空间信息技术与应用公共实验室,广东 广州510070;广东省科学院 广州地理研究所,广东 广州 510070;广东省地理空间信息技术与应用公共实验室,广东 广州510070;广东省科学院 广州地理研究所,广东 广州 510070;广东省地理空间信息技术与应用公共实验室,广东 广州510070
基金项目:广东省科技计划项目(2013B020314003,2013B031500007,2015B070701020);广东省水利科技项目(2011-19,2014-13);广东省科学院专项基金(2017GDASCX-0806,2017GDASCX-0101,2018GDASCX-0101)。
摘    要:在自然和人为的双重作用下,珠江口伶仃洋地貌特征发生了巨大变化,改变了水动力环境,致使纳潮能力也发生深刻变化。本文以珠江口伶仃洋地貌变化和纳潮能力变化为研究对象,采用近百年来的古地图资料、人类活动和水文特征等资料,通过第四纪地质学、地图学、遥感学、历史地理学等方法,反演内伶仃洋形态变化过程,探讨1906年以来珠江口伶仃洋的地貌变化过程。采用岸线分维数、形状指数、纳潮量、潮差消减能力,定量反映地貌变化对纳潮能力的影响。结果表明,1906-2014年,地形演变造成伶仃洋纳潮量减少了14.50%;1971-2014年,伶仃洋纳潮量减少了11.27%。海岸线的变化引起纳潮能力逐渐变弱,潮差沿程变化率减小了0.23,尤其是自1971年以来,因堤围等建设,河口岸线逐渐平直,纳潮能力逐渐减弱。

关 键 词:珠江河口  地貌  海岸  纳潮量  围垦
收稿时间:2018/1/20 0:00:00
修稿时间:2018/8/30 0:00:00

Morphological change and tidal prism variation in the Lingdingyang, Zhujiang River Estuary
Gong Qinghu,Zhou Qing,Li Pingri and Liu Xulong.Morphological change and tidal prism variation in the Lingdingyang, Zhujiang River Estuary[J].Acta Oceanologica Sinica (in Chinese),2019,41(1):98-107.
Authors:Gong Qinghu  Zhou Qing  Li Pingri and Liu Xulong
Institution:Guangzhou Institute of Geography, Guangdong Academy of Science, Guangzhou 510070, China;Guangdong Open Laboratory of Geospatial Information Technology and Application, Guangzhou 510070, China
Abstract:The geomorphic features in the Zhujiang River Estuary have changed tremendously due to natural processes and human activities over the last century, and these changes have led to the variations in the hydrodynamic environment such as the reduced tidal prism in the estuary. In this paper, the relation between geomorphic features and the tidal prism was analyzed. In order to identify how the historical landform change affects the tidal prism, we investigated the morphology change in the Lingdingyang Estuary through the analyses of historical topographic maps and nautical charts. The shape index and fractal dimension were introduced as indicators to reflect coastline changes that affect the tides. The tidal dissipation rate and tidal influx were found to represent the tidal prism. The results show that the tidal influx in the Lingdingyang has declined by 14.50% since 1906 under the morphological change. The tidal dissipation rate weakens subject to the morphological changes and the tidal dissipation rate decreases by 0.23. Meanwhile, the tidal reduction capability is weakened due to the coastline change, which has become the straight artificial coastline under the embankment construction especially since 1971.
Keywords:Zhujiang River Estuary  geomorphology  coastal beach  tidal volume  reclamation
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《海洋学报》浏览原始摘要信息
点击此处可从《海洋学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号