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7
votes
2answers
93 views

Could the Grand Canyon be flooded by the ocean if it got deep enough?

The Colorado River has been carving the Grand Canyon for a few million years now, such that the canyon floor is around 6000 feet lower in elevation than the surrounding area, at about 2400 feet above ...
3
votes
0answers
123 views

How does the estaurine turbidity maximum vary depending on the type of estuary?

An estuarine turbidity maximum (ETM) is the area of an estuary that has maximum values in suspended particles in the water column. My questions are What are the main characteristics of the ETM? How ...
16
votes
2answers
3k views

Where do rivers like the Rio de la Plata end and the ocean begin?

We just had visitors (in Monterey, California) from Montevideo, Uruguay. Not being very familiar with Uruguay, after having taken them to Big Sur, I asked them how far they lived from the ocean. ...
10
votes
2answers
1k views

Undersea riverbeds?

On a meandering bit of research through Wikipedia, I was looking at the Google Maps location of Texas Tower 4. South-east of that location there is what looks like a river valley under the ocean. If ...
7
votes
1answer
123 views

How has river to ocean flux changed over the last 500 million years?

Do we have any rough indices of how this flux has changed? I'm particularly interested in knowing whether the flux was higher or lower during the time of Pangaea, or during the time of the unusually ...