Rivers, Estuaries, & Deltas


On (and Below) the Waterfront

On (and Below) the Waterfront

The expansion of the New York metropolitan area’s harbor over the decades has led to big but hidden changes in tidal flows that have environmental impacts.

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Up in the Sky!

Up in the Sky!

Nope, it’s not a bird or a plane. It’s a drone on a scientific mission to restore a river long…

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Earth’s Riverine Bloodstream

Earth's Riverine Bloodstream

Like blood in our arteries in our body, water in rivers carry chemical signals that can tell us a lot about how the entire Earth system operates.

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Of The River and Time

Of The River and Time

The Fraser River in western Canada is flowing with tiny time capsules. Inside them is a fascinating history of Earth’s…

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River Quest

River Quest

Max Holmes and Bernhard Peucker-Ehrenbrink spend a lot of time upriver—one day bundled in a parka on the icy banks…

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At the River’s End

At the River's End

In science, some of the most confounding and interesting questions come from the borderlands, where one physical world collides with…

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The Once and Future Danube River Delta

The Once and Future Danube River Delta

?The Danube River Delta is like the Everglades,? said Liviu Giosan, who grew up near the Romanian wetlands. The triangle-shaped, sediment-rich region at the mouth of the Danube River is also rich with human history. A traditional maritime culture persists on the delta, and the United Nations has declared the region a World Heritage site. The Danube Delta is also a great place for a geologist to study how the coast stretches, contracts, and undulates with time?and human interference.

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The Great Flood of New York

The Great Flood of New York

An ice dam forming a large Ice Age lake collapsed 13,350 years ago, sending a flood down the Hudson River Valley and causing dramatic climate changes.

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Where the Rivers Meet the Sea

Where the Rivers Meet the Sea

Estuaries are the borderlands between salt and freshwater environments, and they are incredibly diverse both biologically and physically. The diversity and the high energy of the ecosystem make estuaries remarkably resilient.

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The Grass is Greener in the Coastal Ocean

The Grass is Greener in the Coastal Ocean

Stretching from inland rivers and bays to the edge of the continental shelf, the coastal ocean accounts for about 10 percent of the ocean’s surface area. Yet this relatively small sliver of ocean contains about half of all the microscopic plants adrift in our seas.

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