Sediments Sink River's Flow into Sea

By Sid Perkins, 15:48 PM April 15, 2008

Pesticides, organic carbon, and other nutrients may be reaching the seafloor near continents via an unexpected route. They're carried along the ocean bottom by dense, sediment-rich plumes of fresh water dumped into the sea by rivers, says a team of scientists.

Seawater typically is about 2.5 percent more dense than fresh water, so a river's flow usually spills across the top of the ocean as it travels away from land. Normally, the river waters mix with the ocean to form a brackish blend, and ...

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