Saltwater intrusion is the landward migration of saline water into freshwater aquifers, surface waters, or soils driven primarily by hydraulic gradients altered by groundwater pumping, sea-level rise, or reduced recharge. It is governed by variable-density flow and solute transport processes described by coupled groundwater flow and advection–dispersion equations, often producing a transition zone rather than a sharp interface between fresh and saline water. In coastal hydrogeology, saltwater intrusion degrades groundwater quality, alters geochemical equilibria, and constrains sustainable yield, requiring quantitative assessment through monitoring networks, hydrogeologic characterization, and numerical modeling to design mitigation strategies such as pumping optimization, recharge enhancement, or physical barriers.
When people consider what causes high blood pressure, they often think of lifestyle factors, such as eating salty foods, lack of exercise or smoking. However, an unexpected source of salt might also be raising blood pressure ...
Environment
Apr 18, 2026
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Coastal groundwater is a key source of drinking water in many regions of the world. However, it is threatened by overabstraction and the potential for salinization. Rising sea levels are further exacerbating the situation. ...
Earth Sciences
Apr 14, 2026
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Listening to one-minute-long audio recordings of forests had positive effects on people's short-term well-being, especially when the recordings were from local temperate forests. Study participants residing in Germany perceived ...
Ecology
Apr 9, 2026
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Soil salinity is a critical concern in agriculture when excessive soluble salts restrict a plant's water uptake, according to the U.S. Department of Agriculture, hindering crop growth and reducing yields on roughly 30% of ...
Biotechnology
Mar 25, 2026
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For half the world's population, the water in their drinking glasses comes from below them. Groundwater also supplies 40% of global irrigation projects. Alarmingly, more than a third of the planet's aquifers, or groundwater ...
Earth Sciences
Mar 20, 2026
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302
Dalhousie researchers have revealed how Arctic aquifers—permeable layers of the ground that store and transmit water to rivers, lakes and terrestrial ecosystems—behave today and how these vital resources will change with ...
Earth Sciences
Feb 2, 2026
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Despite its tropical climate and floodplain location, Bangladesh—one of the world's most densely populated nations—seasonally does not have enough freshwater, especially in coastal areas. Shallow groundwater is often saline, ...
Earth Sciences
Dec 22, 2025
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A solution to a tricky groundwater riddle from Australia: Researchers at TU Wien have developed numerical models to simulate the movement of fluids in porous materials.
Soft Matter
Nov 4, 2025
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Salt intrusion is a growing concern worldwide. Eleonora Saccon, who completed a master's degree in climate change ecology in her native Italy, studied the effects of salty surface water at the NIOZ branch in Zeeland.
Earth Sciences
Sep 25, 2025
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26
Once a haven for flamingos, sturgeon and thousands of seals, fast-receding waters are turning the northern coast of the Caspian Sea into barren stretches of dry sand. In some places, the sea has retreated more than 50km. ...
Environment
Sep 20, 2025
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