水科学进展2017，Vol.28Issue(2)：203-212,10.DOI:10.14042/j.cnki.32.1309.2017.02.005
长江口咸潮入侵扩散响应函数及初步应用
Diffusion response function and preliminary application of saltwater intrusion in the Yangtze River Estuary
摘要
Abstract
Saltwater intrusion was the salinity diffusion process by the tide and runoff into the sea. In this paper, the theory of energy accumulation and impedance was used as the basis by which to analyze and infer the diffusion re-sponse function of runoff into the sea, tidal range and region of intrusion, and the data of runoff into the sea, tidal range and region of saltwater intrusion over the last 50 years was analyzed and calculated to confirm the theory. The re-sults indicated that the function between the tidal range and region of intrusion exhibited obvious S-shaped regularity, and there was the same S-shaped conclusion between the runoff into the sea and maximum area over the standard sa-linity, which formed a three-dimensional diffusion response function of saltwater intrusion. Using the data over the last 50 years in the Yangtze River Estuary, the three-dimensional diffusion characteristic was confirmed, the S-shaped function based on the hyperbolic tangent of saltwater intrusion was constructed, and the parameter setting and quanti-zation method was given. Through the theory of this function, the runoff into the sea which controls the saltwater intru-sion was ascertained to be 10000 m3/s, and the loss caused by the saltwater intrusion was further calculated over 2001—2012.关键词
咸潮入侵/扩散响应函数/S型曲线/入海径流/潮差Key words
saltwater intrusion/diffusion response function/S-shaped curve/runoff into the sea/tidal range分类
海洋科学引用本文复制引用
陈敏建,胡雅杰,马静,闫龙,周飞,汪勇..长江口咸潮入侵扩散响应函数及初步应用[J].水科学进展,2017,28(2):203-212,10.基金项目
国家重点研发计划资助项目(2016YFC0503502) （2016YFC0503502）
水利部公益性行业科研专项经费资助项目(201201073) The study is financially supported by the National Key Research and Development Program of China (No. 2016YFC0503502) and the National Non-Profit Research Program of China (No. 201201073) . （201201073）
