Characteristics of Solute Transport Continuously Released from Coastal Unconfined Aquifers under the Tidal Action Based on Laboratory Experiment  

作　　者：Min Guo Junwei Wan Kun Huang 

机构地区：[1]Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation,Hubei Polytechnic University,Huangshi435003,China [2]School of Environmental Studies,China University of Geosciences,Wuhan 430074,China

出　　处：《Journal of Earth Science》2024年第5期1738-1748,共11页地球科学学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.42172281);the Opening Fund of the State Key Laboratory of China University of Geosciences(Wuhan)(No.SKJ2018055)。

摘　　要：Most studies on solute transport in coastal aquifers affected by tides focus on the transport of instantaneous released solute,and there are few studies on continuously released solute affected by tides.In this study,the image monitoring method is used to establish the quantitative relationship between the concentration of the colored tracer and the hue value of the image,and the digital image is used to determine the tracer concentration distribution.Using image monitoring method laboratory experiments,quantitative analysis of the characteristics of continuously released solute transport in coastal unconfined aquifers under the tidal influence.Experiments show that the high tide inhibits the increase in the concentration of each point in the aquifer.Under the influence of tides,the solute plume retreats towards the land.During the low tide period,the solute plume migrates toward the sea again.And the solute plume will maintain a relatively stable shape after entering the aquifer for a long enough time.Ignoring the tidal effect seems to have little effect on the estimation of the position of the solute plume,but ignoring the tidal effect has a certain influence on the estimation of the dispersion range of the solute plume.No matter whether considering the tidal action,the final dispersion range of the solute plume is almost the same.But before the solute plume reaches a stable state,ignoring the tidal effect will lead to a smaller dispersion range of the solute plume.

关 键 词：tidal action coastal unconfined aquifers continuously released solute solute transport image monitoring method marine geology 

分 类 号：P731[天文地球—海洋科学]