Coastal Processes and El Nino. El Nino  Normal: Trade winds blow west Wind piles up warm water in W. Pacific ○ Sea surface and sea surface temperature.

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Blow to the west across the tropical pacificTrade winds blow to the west across the tropical pacific Winds pile up warm water in the west pacific so the.
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Presentation transcript:

Coastal Processes and El Nino

El Nino  Normal: Trade winds blow west Wind piles up warm water in W. Pacific ○ Sea surface and sea surface temperature is higher in west Water cooler near S. America ○ Warm waters move to west ○ Divergence of surface waters cause upwelling

El Nino  El Nino: Trade winds relax Winds no longer pile up water in W. Pacific ○ Thermocline no longer steeply inclined Waters warm near S. America ○ Rain moves east ○ Upwelling reduced

Coastal Processes  Submergent Coastlines – sea level rise Transgression Subsidence  Emergent Coastlines – sea level fall Regression Uplift

Coastal Processes  See lab manual pages for more

Longshore Drift

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