1. How Tsunami warning system
in the Indian Ocean works?
● What is tsunami warning system?
● The tsunami in the Indian Ocean
● PTWC and JMS
● PTMPs
● How tsunami Warning system works? (1)
● How tsunami Warning system works? (2)

2. What tsunami warning system?
● The system is a system to detect tsunamis and
issue warning to protect lives of people
● The system consists of two part, sensor to
detect tsunami and system to issue the warning
of tsunamis.

3. The tsunami in the Indian Ocean
● In 2004, it was killed almost 2300,000 people.
● Before 2004, There were no system like the
tsunami warning system.
● Also, a lot of countries didn't have agencies
responsible for tsunami warnings.

4. PTWC and JMS
● PTWC is Pacific Tsunami Warning Centre.
● JMS is Japan Meteorological Agency.
● Data of earthquake is sent to the PTWC in
Hawaii and JMA in Tokyo.

5. RTWPs
● The Regional Tsunami Watch Providers
(RTWPs) are set to watch region in Indian
Ocean countries.

6. How tsunami warning system
works? (1)
1. Earthquake happens.
2. Data of the earthquake is sent to the PTWC
and JMA.
3.It analyzes the time of coming tsunami, and
determine intensity of an earthquake.

7. How tsunami warning system
works? (2)
4. That result are sent to the regions.
5. We receive that result as E-mail, TV news, etc.

8. Conclusion
● In the 2004, many people was dead by the
tsunami because the tsunami warning system
wasn't perfect. That experience is based on,
current system is improved, and protect many
lives of people from tsunami.