首页|期刊导航|中国海洋湖沼学报（英文版）|Impact of seasonal tide variation on saltwater intrusion in the Changjiang River estuary
中国海洋湖沼学报（英文版）2012，Vol.30Issue(2)：342-351,10.DOI:10.1007/s00343-012-1115-x
Impact of seasonal tide variation on saltwater intrusion in the Changjiang River estuary
Impact of seasonal tide variation on saltwater intrusion in the Changjiang River estuary
摘要
Abstract
An improved 3-D ECOM-si model was used to study the impact of seasonal tide variation on saltwater intrusion into the Changjiang River estuary,especially at the bifurcation of the North Branch (NB) and the South Branch (SB).The study assumes that the river discharge and wind are constant.The model successfully reproduced the saltwater intrusion.During spring tide,there is water and salt spillover (WSO and SSO) from the NB into the SB,and tidally averaged (net) water and salt fluxes are 985 m3/s and 24.8 ton/s,respectively.During neap tide,the WSO disappears and its net water flux is 122 m3/s.Meanwhile,the SSO continues,with net salt flux of 1.01 ton/s,much smaller than during spring tide.Because the tidal range during spring tide is smaller in June than in March,overall saltwater intrusion is weaker in June than in March during that tidal period.However,the WSO and SSO still exist in June.Net water and salt fluxes in that month are 622 m3/s and 15.35 ton/s,respectively,decreasing by 363 m3/s and 9.45 ton/s over those in March.Because tidal range during neap tide is greater in June than in March,saltwater intrusion in June is stronger than in March during that tidal period.The WSO and SSO appear in June,with net water and salt fluxes of 280 m3/s and 8.55 ton/s,respectively,increasing by 402 m3/s and 7.54 ton/s over those in March.Saltwater intrusion in the estuary is controlled by the river discharge,semi-diurnal flood-ebb tide,semi-monthly spring or neap tide,and seasonal tide variation.关键词
tidal range/seasonal variation/saltwater intrusion/numerical simulationKey words
tidal range/seasonal variation/saltwater intrusion/numerical simulation引用本文复制引用
QIU Cheng,ZHU Jianrong,GU Yuliang..Impact of seasonal tide variation on saltwater intrusion in the Changjiang River estuary[J].中国海洋湖沼学报（英文版）,2012,30(2):342-351,10.基金项目
Supported by the National Basic Science Research Program of Global Change Research (No.2010CB951201),the Funds for Creative ResearchGroups of China (No.41021064),and the Marine Special Program for Scientific Research on Public Causes (No.201005019) （No.2010CB951201）
