Salt water intrusion in a three-dimensional groundwater system in the Netherlands: A numerical study

被引:105
作者
Oude Essink G.H.P. [1 ]
机构
[1] Centre of Hydrology, Department of Theoretical Geophysics, Institute of Earth Sciences, Utrecht
关键词
Coastal aquifer; Density-driven groundwater flow; MOCDENS3D; Noord-Holland; Numerical modeling; Salt water intrusion; Sea level rise; The Netherlands;
D O I
10.1023/A:1010625913251
中图分类号
学科分类号
摘要
Salt water intrusion is investigated in a coastal groundwater system in the northern part of the province Noord-Holland, The Netherlands. Density dependent groundwater flow is modeled in three-dimensions with MOCDENS3D. This computer code is a version of MOC3D (Konikow et al., 1996) that has been adapted to simulate transient density-driven groundwater flow. Results from the model suggests that in this Dutch hydrogeologic system a severe and irreversible salinisation is already occurring. Within a few tens to hundreds of years; the salinity of the shallow aquifer is estimated to increase substantially. This salinisation process is a result of human activities such as the reclamation of the low-lying areas during the past centuries. Without changing the present boundary conditions, seepage into the low-lying areas will decrease slightly because of predicted increases in groundwater salinity. However, the rate in salt load through the Holocene aquitard into the low-lying areas will increase significantly due to an increase in salinity in the shallow aquifer. In addition, a relative sea level rise of 0.5 m per century will intensify the salinisation process, causing an enormous increase in salt load in all low-lying areas in this part of The Netherlands.
引用
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页码:137 / 158
页数:21
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