2019
DOI: 10.1016/j.jhydrol.2019.06.060
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Effect of subsurface dams on saltwater intrusion and fresh groundwater discharge

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Cited by 94 publications
(58 citation statements)
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“…Takahashi et al (2012) confirmed that the effective wall height should be taller than or equal to the height of the saltwater wedge at the same location. Chang et al (2019) further proposed the concept of minimum effective height of subsurface dams to control SWI and explored the influence of subsurface dams on the freshwater discharge. Due to engineering limitations under various geological and hydrogeological conditions, the height of the subsurface dam is normally set to be equal to the sea level or at least higher than the interface between saltwater and freshwater (Jamali et al, 2013).…”
mentioning
confidence: 99%
“…Takahashi et al (2012) confirmed that the effective wall height should be taller than or equal to the height of the saltwater wedge at the same location. Chang et al (2019) further proposed the concept of minimum effective height of subsurface dams to control SWI and explored the influence of subsurface dams on the freshwater discharge. Due to engineering limitations under various geological and hydrogeological conditions, the height of the subsurface dam is normally set to be equal to the sea level or at least higher than the interface between saltwater and freshwater (Jamali et al, 2013).…”
mentioning
confidence: 99%
“…In previous 2D studies by Luyun et al (2009) and Chang et al (2019), subsurface dams that constructed with a height equal to (or slightly lower than) the thickness of the seawater wedge at the dam location (prior to dam construction), were found to be effective in limiting the landward extent of saltwater in coastal aquifers. However, our numerical results reveal that the effectiveness of finite‐length subsurface dams is significantly weaker compared to a subsurface dam that considered only in a cross‐sectional view of the coastal aquifer (see Figures 6 and 7).…”
Section: Discussionmentioning
confidence: 90%
“…Figure 6 illustrates the steady‐state results of the saltwater wedge for different dam heights. We proposed the minimum effective dam height to control SWI in our previous research (Chang et al, 2019). When the dam height is lower than it, the saltwater will flow beyond the dam and form a new wedge across the dam.…”
Section: Resultsmentioning
confidence: 99%
“…However, too high dams increase the construction costs, and dramatically reduce the freshwater discharge, which can lead to the accumulation of inland pollutants. Chang et al (2019) proposed the concept of the minimum effective height to minimize the design height of the dams and enhance the freshwater discharge.…”
Section: Introductionmentioning
confidence: 99%