Louisiana Flashcards
1
Q
Isostatic fall
A
Land sinks at coast - sediment deposited in a river delta
More weight creates sag basin (deposition site) + subsidence (sinking)
2
Q
Coast
A
Alluvial + depositional
Marshes, swamps, barrier islands
3
Q
Vulnerabilities
A
Storm surges
Global SLR
Isostatic tectonic uplift
4
Q
Hard engineering
A
Levees + engineering projects
Protect New Orleans
5
Q
Land elevation
A
Lower than Mississippi River + Lake Pontchartrain
23ft flood wall protects from river
17.5ft flood wall + hurricane protection + levee protects from lake
6
Q
Land sinking
A
Continually sinking - majority of land lost
New Orleans sinking at rate of 2 inches per year - underwater by 2100
