GEOG 001 Lecture Notes - Lecture 13: Wave Power, Delta River, Forebulge

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2m subsidence in bangkok and 3m in shanghai: removal of mangroves increases wave energy, means inundation of land, total loss of most delta areas in asia. 4800km squared have been lost in last 80 years mississippi. Mississippi delta (above gulf of mexico) drains a huge area up into canada. Continental scale system for eroding rocks and moving sediment to the terminal. Large part of the gulf coast are sinking (e. g. new orleans) 5mm per year. Sinking in context of rising global sea levels- increased incidence of major tropical cyclone. Gulf coast region of usa- hydrocarbon resource, fisheries, ecologically diverse, carbon and nitrogen cycling. By 2100 sea level predicted to be around 18-59cm higher than present- therefore a severe tropical cyclone landfall along the louisiana/mississippi coast will be 4-5m higher than present height of city. Evolution od delta- river running across continental shelf incising deep river valleys, as ice sheets melted global sea levels rose (transgression) flooding the continental shelf.

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