The tsunami warning system in the Indian Ocean works by having the Japan Meteorological Agency send earthquake information to the Pacific Tsunami Warning Center, which then uses this data as well as tide indicators to evaluate the possibility of a tsunami and send warnings to coastal countries. However, prior to 2004 there was no formal warning system, resulting in over 230,000 victims from an Indian Ocean tsunami that year. The document suggests the system in the Indian Ocean could be improved.

1. Working of tsunami warning system
in Indian Ocean
s1180206 Sean Ito

2. Working of tsunami warning system
in Indian Ocean
● Tsunami in the Indian Ocean
● How to get tsunami warnings

3. Tsunami in Indian Ocean
The Pacific Tsunami warning center(PTWC) has
been warning coastal countries to dangerousness
for more than 40 years.

4. Tsunami in Indian Ocean
Victims of a tsunami in the Indian Ocean in 2004
were amounts to 230,000.
Because before 2004, there were no organization
which sends warning massage.

5. How to get tsunami warnings
When an earthquake happens in Indian Ocean,
the Japan Meteorological Agency(JMA) sends
some information to Pacific Tsunami Warning
Center.
The information that JMA sends are time of the
earthquake, the earthquake center, magnitude of
the earthquake, possibility of tsunami, and
expected time of arrival of the tsunami.

6. How to get tsunami warnings
PTWC uses not only data of the earthquake but
also oceanics data. They checks tide indicators.
Then expects the tsunami and sends warnings.

7. The area which are sent warnings

8. Summary
Tsunami warning system in Indian Ocean uses
some data in other countries.
This system should be improved.