POWERPOINT

BY- MRITHUNA

RAJESH

X-A

TSUNAMI

WHAT IS TSUNAMI BASICALLY??

CONCEPT:

·Tsunamis are the worst natural disaster; they happen mostly in the Pacific Ocean, but may also occur any where in the world with a large body of water. ·Tsunamis are large wave of water that is caused by an earthquake in the ocean.

It depends on the earthquake on the size of the Tsunamis big or small. They travel hundreds of miles and cause great devastation to any one in its way. Tsunamis start at speech at .85 mach, which is close to 600 MPH, and then slow down to around 30 MPH when they reach land.

HISTORY OF

TSUNAMI

The Roman historian Ammianus Marcellinus (Res Gestae 26.10.15-19) described the typical sequence of a tsunami, including an incipient earthquake, the sudden retreat of the sea and a following gigantic wave, after the 365 A.D. tsunami devastated AlexandriaWhile Japan may have the longest recorded history of tsunamis, the sheer destruction caused by the 2004 Indian Ocean earthquake and tsunami event mark it as the most devastating of its kind in modern times, killing around 230,000 people. The Sumatran region is not unused to tsunamis either, with earthquakes of varying magnitudes regularly occurring off the coast of the island.

LIST OF TSUNAMIS OF

PAST 3YRS

*On Jan 4, 2010, two powerful earthquakes measuring 6.5 and 7.2 on the Richter scale hit the western part of the Solomon Islands, followed by a number of smaller quakes. It triggered a tsunami that left about 1,000 homeless.

**On Feb 27, 2010, an 8.8-magnitude earthquake hit Chile, triggering tsunami warnings along the coasts of the Pacific Ocean.

TSUNAMI IN

JAPAN

Japan was hit by a 9.0 magnitude earthquake on March 11, 2011, that triggered a deadly 23-foot tsunami in the country's north. The giant waves deluged cities and rural areas alike, sweeping away cars, homes, buildings, a train, and boats, leaving a path of death and devastation in its wake. Video footage showed cars racing away from surging waves. The earthquake—the largest in Japan's history—struck about 230 miles northeast of Tokyo. The Pacific Tsunami Warning Center issued warnings for Russia, Taiwan, Hawaii, Indonesia, the Marshall Islands, Papua New Guinea, Australia, and the west coasts the U.S., Mexico, Central America, and South America. According to the official toll, the disasters left 15,839 dead, 5,950 injured, and 3,642 missing.

CONSEQUENCES..

BEFORE TSUNAMI

AFTER TSUNAMI

TSUNAMI WARNING SYSTEM

Communication & Transmission of Tsunami Warning to Localities & Civil Defense Authorities

Signboard

Tsunami

TSUNAMIＷＡＲＮＩＮＧ

Central Government

ＴＶ /Radio Station

TSUNAMIＷＡＲＮＩＮＧ

Radio

TV（ Telops, Warning maps）

TSUNAMI

ＷＡＲＮＩＮＧ

Local government

13

PROMOTING THE BASIC KNOWLEDGE OF TSUNAMI

Safe Evacuation Route

Appropriate Risk Awaweness of Local Communities

Understanding of Hazardous Areas

+Early Warning

=

Safe Evacuation

MY CONTRIBUTION TOWARDS THE AFFECTED

AREAS..