Please enable JavaScript.
Coggle requires JavaScript to display documents.
Vulnerability of Coastal Aquifers to groundwater use and climate change -…
Vulnerability of Coastal Aquifers to groundwater use and climate change
Groundwater Extraction
Lowering of hydraulics displaces fresh water away from the coastline
Saltwater Wedge: interface between saltwater and freshwater within a coastal aquifer
Extraction can increase the spread of saltwater intrusion
Extraction Rate (Q)
Distance between two points: extraction and coastline
Thickness of aquifer
saltwater wedge forms due to differences in fresh and salt water vs. density.
Affects pressure balance
Sea Level Rise
saltwater intrusion
saltwater inundation
aquifer permeability affects these factors
potential to push saltwater wedge and change gradients
coastal gradient allows for flooding of saltwater on land
Saltwater Intrusion
transport of saltwater into freshwater zones
this lowers freshwater pressure
saltwater replaces freshwater in some cases
Saltwater wedge
borders freshwater and saltwater within an aquifer
freshwater gets drawn out
groundwater extracted from the wedge
sea level rise initiates the pushing of the wedge through hydraulic pressure
Saltwater Inundation
Flooding of coastal places by seawater
At home I live right by the beach so this would happen a lot lol
the lower the gradient, the higher the sea level rise
More flooding
can cause permanent damage
coastal land coverage affects vertical saltwater movement