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How can a glacier erode below sea level but streams and rivers cannot?
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A glacier is a giant mass of ice that has accumulated for many years and moves slowly from higher elevations to lower elevations and sometimes sea level. Due to its immense bulk, a glacier will take a very long amount of time to melt even when it reaches the ocean. As a result, it will continue to erode the ocean floor as it moves into the ocean. Fjords are a perfect example of erosion at and below sea level as a glacier moves into the ocean. Rivers and streams, on the other hand, are already liquid water. When the moving water from them reaches the ocean, it quickly disperses into a large, open body of water. As a result, the force of the flowing water very quickly disappears once it hits the ocean. That is why rivers and streams don't erode below sea level but glaciers do.
Posted by ncchemist on October 21, 2012 at 9:01 PM (Answer #1)
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