what is a fluvial tsunami
This one was estimated at an amazing 8.8-magnitude and was probably one of the strongest quakes in human history. This one was estimated at an amazing 8.8-magnitude and was probably one of the strongest quakes in human history. 1812. In all, it is believed that approximately 1,000 people died because of the earthquakes, though an accurate count is difficult to determine because of a lack of an accurate record of the Native American population in the area at the time. 1812. This series of large earthquakes ended in March, although there were aftershocks for a few more years. However, the quake did cause landslides that destroyed several communities, including Little Prairie, Missouri. The strongest of the tremors followed on February 7. At 7:15 a.m., an even more powerful quake erupted, now estimated to have had a magnitude of 8.6. This tremor literally knocked people off their feet and many people experienced nausea from the extensive rolling of the earth. from:    http://www.history.com/this-day-in-history/earthquake-causes-fluvial-tsunami-in-mississippi. The city of New Madrid, located near the Mississippi River in present-day Arkansas, had about 1,000 residents at the time, mostly farmers, hunters and fur trappers. Large lakes, such as Reelfoot Lake in Tennessee and Big Lake at the Arkansas-Missouri border, were created by the earthquake as river water poured into new depressions. Waterfalls were created in an instant; in one report, 30 boats were helplessly thrown over falls, killing the people on board. At 7:15 a.m., an even more powerful quake erupted, now estimated to have had a magnitude of 8.6. On this day in 1812, the most violent of a series of earthquakes near Missouri causes a so-called fluvial tsunami in the Mississippi River, actually making the river run backward for several hours. How fast is a tsunami? Reportedly, the president’s wife, Dolley Madison, was awoken by the tremor in Washington, D.C. Fortunately, the death toll was smaller, as most of the survivors of the first earthquake were now living in tents, in which they could not be crushed. This series of large earthquakes ended in March, although there were aftershocks for a few more years. However, the quake did cause landslides that destroyed several communities, including Little Prairie, Missouri. Large lakes, such as Reelfoot Lake in Tennessee and Big Lake at the Arkansas-Missouri border, were created by the earthquake as river water poured into new depressions. The strongest of the tremors followed on February 7. Brick walls were toppled in Cincinnati. Large trees were snapped in two. In all, it is believed that approximately 1,000 people died because of the earthquakes, though an accurate count is difficult to determine because of a lack of an accurate record of the Native American population in the area at the time. On this day in 1812, the most violent of a series of earthquakes near Missouri causes a so-called fluvial tsunami in the Mississippi River, actually making the river run backward for several hours. Large trees were snapped in two. Sulfur leaked out from underground pockets and river banks vanished, flooding thousands of acres of forests. This tremor literally knocked people off their feet and many people experienced nausea from the extensive rolling of the earth. On January 23, 1812, an estimated 8.4-magnitude quake struck in nearly the same location, causing disastrous effects. In the Mississippi River, water turned brown and whirlpools developed suddenly from the depressions created in the riverbed. The unusual seismic activity began at about 2 a.m. on December 16, 1811, when a strong tremor rocked the New Madrid region. The city of New Madrid, located near the Mississippi River in present-day Arkansas, had about 1,000 residents at the time, mostly farmers, hunters and fur trappers. Tsunamis can travel at speeds of about 500 miles or 805 kilometers an hour, almost as fast as a jet … In the Mississippi River, water turned brown and whirlpools developed suddenly from the depressions created in the riverbed. Earthquake causes fluvial tsunami in Mississippi. Earthquake causes fluvial tsunami in Mississippi. The earthquake also caused fissures–some as much as several hundred feet long–to open on the earth’s surface. Brick walls were toppled in Cincinnati. Sulfur leaked out from underground pockets and river banks vanished, flooding thousands of acres of forests. A normal wind wave travels at about 90kmh, but a tsunami can race across the ocean at an incredible 970kmh! from:    http://www.history.com/this-day-in-history/earthquake-causes-fluvial-tsunami-in-mississippi, 1812 Fluvial Tsunami along the Mississippi. Reportedly, the president’s wife, Dolley Madison, was awoken by the tremor in Washington, D.C. Fortunately, the death toll was smaller, as most of the survivors of the first earthquake were now living in tents, in which they could not be crushed. Many of the small islands in the middle of the river, often used as bases by river pirates, permanently disappeared. Sometimes, before a tsunami hits, there is a huge vacuum effect, sucking water from harbours and beaches.

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