A Tsunami is a series of gigantic water waves that
causes a surge of water onto land.
These surges can reach heights up to 100 feet.
It can occur in large lakes but mainly occurs in seas.
What is a Teletsunami? It’s a tsunami which causes damage
a long distance away from the source. These types of tsunamis are not
produced by horizontal motions, but by vertical motions in the seabed.
Tsunamis can reach speeds up to 500 miles per hour...that is
about as fast as a jet plane!
Almost 80% of tsunamis occur within the Paciﬁc Ocean’s ‘Ring of Fire’.
This is due to the amount of earthquake and volcanic activity in the area.
1. When vacuum effect occurs, (the sea ﬂoor is left
completely waterless and the seaﬂoor is totally exposed) is
the ﬁrst sign a tsunami is about to hit.
2. Tsunamis generally consist of a series of waves with periods ranging
from minutes to hours, arriving in what can be called a “wave train”...
this means that after the water retreats, the tsunami could hit again.
3. The best defense against any tsunami is early warning
that allows people to seek higher ground.
Tsunami can be generated when the sea ﬂoor abruptly
deforms and vertically displaces the overlying water.
A tsunami cannot be precisely predicted, even if the
magnitude and location of an earthquake is known.
Some problems caused by
1. Crops damaged and the community
can suffer from a lack of food and work.
3. As the devastation can occur in very
poor countries, there is usually not be
enough help or money to completely
rebuild entire livelihoods.
2. People trapped under buildings for
long periods of time. Sometimes help
comes too late.
One of the most well known and recent incidence of
a tsunami was in Indonesia, on the 26th of
December 2004. A 9.3 magnitude earthquake killed
over 230,000 people in fourteen different countries.