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  1. 1. How Tsunami WarningSystem in Indian Ocean Works s1180035 Shota Furuya
  2. 2. When an Earthquake Occurs● When an earthquake occurs in Indian Ocean, RTWPs transmit some information to PTWC and JMA.● PTWC and JMA are responsible for providing Indian Ocean. RTWP: Regional Tsunami Watch Provider (a system in many countries near Indian Ocean) PTWC: Pacific Tsunami Warning Center (in Hawaii) JMA: Japan Meteorological Agency (in Japan)
  3. 3. RIMES● ADPC has developed RIMES which is a multi-hazard warning system.● RIMES will be expected to work with RTWPs, PTWC and JMA. ADPC: Asian Disaster Preparedness Cetnter (in Bangkok) RIMES: Regional Integrated Multi-hazard Early warning System
  4. 4. Sources of Information● Information source which is RTWPs send to PTWC and JMA is tidal gauges, DART sensors, buoys, news bulletins, telegrams, telephones, and CTBTO. DART: Deep-ocean Assessment and Reporting of Tsunami CTBTO: the Commission for the nuclear-Test Ban Treaty Organization
  5. 5. Works of PTWC and JMA● PTWC and JMA determine size of earthquakes and possibility for tsunamis.● It takes 15-20 minutes to analyze information about earthquakes.● Possibility for tsunamis depends on the location of its epicenter.
  6. 6. National Agencies● National agencies also receive information and send it to PTWC and JMA.● Sources of information is seismic centers, buoys, and news bulletins.
  7. 7. Sending Warning● Warning of tsunamis is sent via radio, television, SMS, e-mail, bells, megaphones, or loud-speakers.● Some countries conduct an evacuation drill.
  8. 8. Conclusion● Many countries educate local people to understand what they do when an earthquake occurs and tsunami reaches.● Even though technology has developed, warnings cannot reach all people.● The problem is how to get people to understand dangerousness of tsunamis and how to develop infrastructures of evacuation.