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5.1 Quake Rattles Atlantic; No Tsunami Threat

by Weatherboy Team Meteorologist - April 13, 2021

The strong earthquake was located near the Equator in the Atlantic Ocean. Image: USGS
The strong earthquake was located near the Equator in the Atlantic Ocean. Image: USGS




A 5.1 magnitude earthquake struck beneath the central Atlantic Ocean moments ago; fortunately, there is no tsunami threat.

The strong earthquake had at an epicenter at about 6 miles deep, located at 0.081°N 17.393°W. The earthquake was far enough from land to not be felt by anyone.

The earthquake occured in a seismically active area of the Central  Mid Atlantic Ridge, which separates the South American Plate from the African Plate. In this part of the world, the two plates are moving apart, triggering earthquakes as they split above the ridge.




These plates are based on the scientific theory of Plate Tectonics, which describes the large-scale motion of plates making up the Earth’s lithosphere. Scientists believe tectonic processes began on Earth between 3.3 and 3.5 billion years, building upon the concept of continental drift, a scientific concept developed in the early part of the 20th century. Continental drift is the gradual movement of the continents across the Earth’s surface through geological times.

Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases. According to the National Ocean Service, the speed of tsunami waves depends on ocean depth rather than the distance from the source of the wave. Tsunami waves may travel as fast as jet planes over deep waters, only slowing down when reaching shallow waters. While tsunamis are often referred to as tidal waves, this name is discouraged by oceanographers because tides have little to do with these giant waves.




Today’s quake wasn’t far from a 5.0 earthquake that struck the central Atlantic on April 4.

 

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