Flood it is a natural event or occurrence where a piece of land (or area) that is usually dry land, suddenly gets submerged under water. Some floods can occur suddenly and recede quickly. Others take days or even months to build and discharge.
When floods happen in an area that people live, the water carries along objects like houses, bridges, cars, furniture and even people. It can wipe away farms, trees and many more heavy items.

Rains
Each time there are more rains than the drainage system can take, there can be floods. Sometimes, there is heavy rain for a very short period that result in floods. In other times, there may be light rain for many days and weeks and can also result in floods.

A volcano is active if it is erupting lava, releasing gas or generates seismic activity. A volcano is dormant if it has not erupted for a long time but could erupt again in the future. Once a volcano has been dormant for more than 10 000 years, it is termed extinct.

Tsunamis are often called tidal waves, but this is not an accurate description because tides have little effect on giant tsunami waves.

Far out in the ocean, tsunami waves do not get very high, but they move very fast. In fact, the National Oceanic and Atmospheric Administration (NOAA) reports that tsunami waves can travel as fast as a jet plane.

As a tsunami gets closer to land and the ocean depth decreases, the speed of the tsunami wave slows down and the height of the tsunami wave increases dramatically—along with its potential for destruction.

One thing is certain about tsunamis: their strength and behavior are difficult to predict. Once a tsunami makes landfall, the waves can last from five to 15 minutes and do not follow a set pattern. NOAA warns that the first wave may not be the largest. A strong earthquake in a coastal region puts authorities on alert that a tsunami may have been triggered, leaving a few precious minutes for coastal residents to flee.

tsunami

natural disaster

According to the American Geophysical Union, the journal's parent organization, researchers have discovered pieces of the mantle have been breaking off below the North American Plate in this region and sinking deeper into the earth.

"Our idea supports the view that this seismicity will continue due to unbalanced stresses in the plate," Berk Biryol told the AGU.

Biryol is a seismologist at the University of North Carolina Chapel Hill and lead author of the recently published study. According to Biryol's research, the geological processes the researchers found revealed thinning and weakening of the plate.

According to the American Geophysical Union, the journal's parent organization, researchers have discovered pieces of the mantle have been breaking off below the North American Plate in this region and sinking deeper into the earth.

"Our idea supports the view that this seismicity will continue due to unbalanced stresses in the plate," Berk Biryol told the AGU.

Biryol is a seismologist at the University of North Carolina Chapel Hill and lead author of the recently published study. According to Biryol's research, the geological processes the researchers found revealed thinning and weakening of the plate.