Hurricanes Get Supercharged by River Mouths

National Geographic: Hurricanes can get supercharged when they hit river mouths, researchers now find. Hurricanes keep alive by converting the warmth of tropical waters into motion. The strong winds they kick up in turn cause surface water heated by the sun to mix with deeper, cooler waters, and that drop in warmth causes hurricanes to weaken. Rivers and rainfall alter this pattern by adding freshwater, which is less dense than saltwater. Therefore, this freshwater sits on top of cold seawater for much the same......

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