Intrusion of saltwater into the water table caused by overpumping of water. This lowers the water table below the sealevel causing, thus, the intrusion of sea water into the (fresh) water table.
Movement of salt water into freshwater aquifers in coastal and inland areas as groundwater is withdrawn faster than it is recharged by precipitation.
The invasion of fresh surface water or groundwater by saltwater.
occurs when groundwater supplies are depleted to the extent that coastal waters infiltrate local aquifers
Occurs when salt water enters a fresh-water aquifer. Rising sea levels can cause saltwater intrusion along coasts or on small islands. Another problem from salt can occur in soil. Overuse of water on crops (e.g., from irrigation ditches), can lead to salt build-up because the minerals (including salt) dissolved in water are left behind when water evaporates. This process is referred to as "salinization" and can harm soil, making it difficult or impossible to grow crops.
The gradual replacement of freshwater by saltwater in coastal areas where excessive pumping of groundwater occurs.
The invasion of salt water into an aquifer because of overpumping of a well in a coastal community.
salt water is denser than fresh water, so fresh groundwater tends to form a “lens” on top of saltwater in coastal areas. Sea-level rise tends to increase the salinity of groundwater, tending to push the freshwater lens inland and toward the surface. Withdrawals of fresh groundwater can be faster than its replenishment, which would tend to pull saltwater into what had been freshwater areas. These push and pull effects can allow saltwater to intrude into freshwater aquifers and wells.
Replacement of freshwater by saline water in an aquifer or body of water.
the invasion of salt water into fresh surface water or groundwater.
The inflow of saltwater into a normally freshwater aquifer; associated with sea level rise and/or groundwater extraction.
the invasion of freshwater bodies by denser salt water
The invasion of fresh surface or groundwater by salt water.
Movement of saltwater into freshwater aquifers.
a process in which salty water is drawn into the freshwater zone of an aquifer, making that source not fit for drinking
Movement of saline water into an aquifer. See also seawater intrusion.
Saltwater intrusion is a natural process that occurs in virtually all coastal aquifers. It consists in salt water (from the sea) flowing inland in freshwater aquifers. This behaviour is caused by the fact that sea water has a higher density (which is because it carries more solutes) than freshwater.