The Indian Ocean tsunami warning system relies on two centers, the Pacific Tsunami Warning Center and a center in Japan, to analyze earthquake data and determine if a tsunami will occur and when it will arrive. If a tsunami is predicted, warnings are sent to countries in the Indian Ocean region through organizations like the Asian Disaster Preparedness Center to allow time for evacuation. This system was implemented after the deadly 2004 Indian Ocean tsunami to help detect future tsunamis and save lives through early warning.

1. Indian Ocean tsunami warning
system warks.
● Tsunami in the Indian Ocean
● Tsunami warning system
● PTWC
● Works of two centers
● ADPC
● How tsunami warning system works? (1)
● How tsunami warning system works? (1)
S1180109 Syun Nabeshima

2. Tsunami in the Indian Ocean
● In 2004, about 230000 people were killed by
large tsunami.
● Before happening the tsunami, there were no
device to detect tsunami in the Indian Ocean.
● Also, a lot of countries did not have agencies
responsible for tsunami warnings.

3. Tsunami warning system
● This system in the Indian Ocean is based on
the PTWC.
● Using the RTWPs, it detests tsunami.

4. PTWC
● PTWC is the Pacific Tsunami Warning Center.
● Data of earthquake is sent to the PTWC in the
Pacific region which has dangers of taunami.

5. Works of two centers
● They are in Hawaii and Japan.
● Data of earthquake is sent to the two centers.
● Works of the centers is to determine the
earthquake size and time that tsunami comes.

6. ADPC
● ADPC is the Asian Disaster Preparedness.
● ADPC in Bangkok will become regional watch
providers.

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

8. 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.