Currently, there is not accurate method for detecting or preventing
tsunamis. After an earthquake occurs, seismologist can usually detect changes
in the ocean floor that may indicate an impending tsunami. The Pacific
Tsunami Warning System and the West Coast and Alaska Warning System
continually monitor seismic activity. These areas of the earth are closely
monitored because they have increased seismic activity, thus the odds of a
tsunami occurring are high. Nevertheless, this does not imply that the Eastern
coast of North America
is out of harms way. In fact, many geologist and seismologist predict an
earthquake that will affect the eastern part of the country from South
Carolina to New York.
Moreover, landslides that could potentially occur from mountains located off
the coast of Africa put eastern states at risk for a
major tsunami.
Today, scientists employ several tools for detecting tsunamis early. Buoys
and tide gauges are positioned in the open ocean and monitor wave and tide
movement. Tide stations are intended to measure any changes in sea level. If
sea level rises above a certain height, this may indicate an approaching
tsunami. Moreover, seismograph stations are also located in the ocean to
monitor any underwater earthquake that cannot be felt on land. If an underwater
earthquake measures 7.0 or higher, a tsunami watch goes into effect.