Influence of landscape features on the large variation of shallow groundwater salinity in southwestern Bangladesh

Influence of landscape features on the large variation of shallow groundwater salinity in southwestern Bangladesh

•The large groundwater salinity variation is explained by landscape features.•The largest chance of fresh groundwater (75%) is at broad paleo channel remnants.•Narrow high-lying zones are more susceptible to saline water influences.•The largest chance of saline groundwater (48%) is under tidal flat...

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Veröffentlicht in:Journal of hydrology: X 2019-11, Vol.5, p.100043, Article 100043
Hauptverfasser: Naus, Floris Loys, Schot, Paul, Ahmed, Kazi Matin, Griffioen, Jasper
Format: Artikel
Sprache:eng
Schlagworte:
Bangladesh
Coastal zone hydrology
Freshwater lens
Hydrogeology
Salt water intrusion
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Zusammenfassung:•The large groundwater salinity variation is explained by landscape features.•The largest chance of fresh groundwater (75%) is at broad paleo channel remnants.•Narrow high-lying zones are more susceptible to saline water influences.•The largest chance of saline groundwater (48%) is under tidal flat or fringe soils. In southwestern Bangladesh, the large variation in groundwater salinity has only been elucidated in small-scale study areas and along large regional-scale gradients. We aimed to assess the regional shallow (
ISSN:2589-9155
2589-9155
DOI:10.1016/j.hydroa.2019.100043