1. Mechanism of Tsunami
warning system
s1180030 Keisuke Hashimoto

2. Table of contents
1. Mecanism of the Tsunami Warning System
2. About PTWC and JMA
3. Indian Ocean Agency
4. How to Convey Warning
5. Actual Condition
6.Conclusion

3. Mecanism of The System
・Data is send to PTWC and JMA when an
earthquake ocurred in the Indian Ocean region.
・ PTWC and JMA determine the size of earthquake and
predict the time when the tsunami wave will arrive.
・PTWC and JMA send alarm of tsunami to some country in the
Indian Ocean region.
・Those country in the Indian Ocean region accept the alarm and
warn people about tsunami.

4. Role of PTWC and JMA
・PTWC and JMA have a responsibility of tsunami watches.
・PTWC and JMA take some data of earthquake from DART
censor and buoy.
・Determine the earthquake size and predict the time when the
tsunami will arrive.
・Send alarm of tsunami to some country in Indian Ocean region.

5. Indian Ocean Agency
・RTWPs
RTWPs undertake the same role as PTWC and JMA.
There is the RTWPs in Indian Ocean countries.
The agency undertake the same role as PTWC and JMA.
・ADPC
ADPC is a agency to watch around some region.
ADPC is regional watch providers.
・RIMES
RIMES is the multi - hazard early warning system.

6. How to convey tsunami warning
・Airwaves
radio, television, SMS, email
・Mannually
bell, megaphone,loud-speaker

7. Actual Condition
・The technology of tsunami warning system does not reach all
areas.
・Some region of in Indian Ocean country, Safety exercise is done
very well.
・Warning of tsunami occasionally muddle around people.

8. Conclusion
・There are many agency of tsunami warning system in Indian
Ocean country, those agency is very important to people in Indian
Ocean country. However, those agency can't save all people in
Indian Ocean country. So, those agency should do effort to save
many people.