In general, the SAR index is the only Na hazard index that showed a trend of compatibility with the SWI index, indicating the higher reliability of this index for assessing water quality in coastal regions affected by SWI.
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Effects of Seawater Intrusion on the Groundwater Quality of Multi-Layered Aquifers in Eastern Saudi Arabia.
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The sentences
This variation has an increasing trend in clusters C4, C3, C2, and C1, which is compatible with the variation in the degree of SWI ( f sea ) (see Figure 4 ).