1.7 - Long Term SL Changes Flashcards

1
Q

Eustatic fall?

A

During glacial periods, ice sheets form and evaporated water gets locked

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2
Q

Eustatic rise?

A

Ice sheets melt into the ocean

Thermal expansion occurs due to higher global temperature

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3
Q

Isostatic fall?

A

Ice sheets melt and land rebounds up causing emergent coastline

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4
Q

Isostatic rise?

A

Land sinks

Sediment deposited in large river deltas meaning more weight and delta subsidence

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5
Q

SL fall causes

A

Raised beaches
Fossil cliffs
Offshore bars

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6
Q

Other factors that change morphology are

A

Wave type
Geology
Topography

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7
Q

New Orleans

A

Subsidence as a city is on a coastline
Glaciers in N America melting sinks it even more when New Orleans already far below - post-glacial readjustment
Prone to hurricanes
Over rely on levees

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