磨刀门咸潮物理模型试验-Ⅳ海平面上升对咸潮上溯的影响  

Modaomen Salt Tide Physical Model Test Ⅳ-Impact of Sea Level Rise on Salt Tide Intrusion

作　　者：何用 卢陈 涂向阳 陈荣力 

机构地区：[1]珠江水利科学研究院,广东广州510611

出　　处：《人民珠江》2012年第A01期40-44,共5页Pearl River

基　　金：水利部公益性行业科研专项(200901032);国家"十一五"水专项(2009ZX07423-001-2)

摘　　要：海平面上升使河口区盐水入侵加剧。利用磨刀门咸潮物理模型试验,对海平面上升10 cm和20 cm引起的盐度变化进行分析,探讨海平面升高引起的咸潮入侵变化特点。试验结果表明:随着海平面的上升咸界整体上移,从小潮阶段开始咸界上移距离逐日增大,在咸界上溯距离最大的小潮转大潮的中潮阶段,咸界上移幅度最大。海平面的升高和咸界上移距离并非线性相关,以目前的海平面为基准,每升高10 cm最大咸界的上移距离大致为6.8km。Abstract： The sea -level rise has exacerbated salty water intrusion in the estuary. In order to explore the salt tide Changes caused by the rising sea levels, Modaomen salt tide physical model test has been conducted to analyze the salinity variation caused by the sea level rise of 10 cm and 20 cm and. The results show that： With the sea level rise, the salt boundary as a whole moves up stream, and the shift distance of the salty boundary begins increase daily from the neap tide. And the distance reaches to the maximum length at the mean tide, which goes between the neat tide and spring tide. The sea - level rise is not linearly related to the salt boundary shift distance. With the current sea level as a benchmark, the salty boundary shift distance is roughly 6.8 km for every sea level rise of 10 cm.

关 键 词：磨刀门 成潮 海平面上升 成界 盐度 

分 类 号：P731.2[天文地球—海洋科学]