The extensive intrusion （covering an area of 83.7-238.3 km;and accounting for 18.6-31.5% of the total area of the plain）, the presence of a transitional zone 1.5-6.0 km in width, and the interconnection in distribut...The extensive intrusion （covering an area of 83.7-238.3 km;and accounting for 18.6-31.5% of the total area of the plain）, the presence of a transitional zone 1.5-6.0 km in width, and the interconnection in distribution between the seawater intrusion district and the region lower than the sea level caused by the strong drop of the groundwater level are major characteristics of the seawater intrusion in the study area. Cation exchange played an important role during the formation of chemical composition of the groundwater in the seawater intrusion district.展开更多
The current salinization of groundwater in the Laizhou area is controlled by three main factors:surge of the sea and inland residual seaweter seepage, original saline water deposited in marine sediment and excessive e...The current salinization of groundwater in the Laizhou area is controlled by three main factors:surge of the sea and inland residual seaweter seepage, original saline water deposited in marine sediment and excessive extraction of the coastal area groundwater. The saliniation of groundwater have obviously affected the local economy and human health.展开更多
Eastern and southern coastal zones of Laizhou Bay are the most representative seawater intruded areas in the world, with two intrusion sources of contemporary seawater and paleobrine. In order to reveal the complicate...Eastern and southern coastal zones of Laizhou Bay are the most representative seawater intruded areas in the world, with two intrusion sources of contemporary seawater and paleobrine. In order to reveal the complicated hydrochemical changing process and the mechanism of fresh groundwater being polluted by saltwater, we conducted long-term observation and hydrochemical analysis at four observing sections of typical salt-fresh water transitional zone. The study indicates that seawater and brine intrusion processes have different hydrochemical features, and that ion exchange and adsorption actions between water and aquifer produce great influence on the intrusion.展开更多
基金This paper is the State key scientific research project 75-57-01-02-05 funded by the National Natural Science Foundation of China. Participating in the field work of the project were also Liu Coufan. Li Chunwei. Zou Zeyuan, Lin Jun, Ren Peiqi, Jiang Kehu
文摘The extensive intrusion （covering an area of 83.7-238.3 km;and accounting for 18.6-31.5% of the total area of the plain）, the presence of a transitional zone 1.5-6.0 km in width, and the interconnection in distribution between the seawater intrusion district and the region lower than the sea level caused by the strong drop of the groundwater level are major characteristics of the seawater intrusion in the study area. Cation exchange played an important role during the formation of chemical composition of the groundwater in the seawater intrusion district.
文摘The current salinization of groundwater in the Laizhou area is controlled by three main factors:surge of the sea and inland residual seaweter seepage, original saline water deposited in marine sediment and excessive extraction of the coastal area groundwater. The saliniation of groundwater have obviously affected the local economy and human health.
基金National Natural Science Foundation of China, No.49871011.
文摘Eastern and southern coastal zones of Laizhou Bay are the most representative seawater intruded areas in the world, with two intrusion sources of contemporary seawater and paleobrine. In order to reveal the complicated hydrochemical changing process and the mechanism of fresh groundwater being polluted by saltwater, we conducted long-term observation and hydrochemical analysis at four observing sections of typical salt-fresh water transitional zone. The study indicates that seawater and brine intrusion processes have different hydrochemical features, and that ion exchange and adsorption actions between water and aquifer produce great influence on the intrusion.
