Tsunami Warning and Mitigation System Masahiro Yamamoto Tsunami

Tsunami Warning and Mitigation System Masahiro Yamamoto Tsunami Unit Intergovernmental Oceanographic Commission (IOC) UNESCO

IOC co-ordinates Tsunami Warning Systems as an end-to-end system Tsunami Early Warning System --effective utilization of existing systems--O O upstream detection, verification, tsunami forecast, dissemination of tsunami warning, intergovernmental downstream delivery of warnings, initiate national counter-measures, prepare and implement standardized reaction

TSUNAMI Early Warning Overview • Hazard Risk Assessment • Warning Guidance • Mitigation - Preparedness Earthquake Tsunami Warning Center National Government Local Government What is Tsunami? People Mass Media International - Regional Framework National Warning System Where is Evacuation Route? Public Awareness Cabinet Office Japan

Indian Ocean Where are we now? All countries of the Indian Ocean participate n Interim Tsunami Advisory Information from centers in Hawaii and Tokyo n National 24/7 Tsunami Focal Point n Governance – UN/IOC through Intergovernmental Group (ICG/IOTWS) n

What is the System? The system must be: n Based on open and free data and information exchange n Based on international and multilateral cooperation n Effective utilization of existing infrastructure; seismic, sea level, communication

Tsunami Forecast Operation for Tsunamis from nearby Origin JMA Seismic Network Tidal Network Tsunami Warning オホーツク海沿岸 北海道日本海 沿岸北部 北海道太平洋沿岸東部 北海道日本海 沿岸南部 Evaluation of Tsunami 北海道太平洋 沿岸西部 北海道太平洋沿岸中部 青森県 太平洋沿岸 青森県日本海沿岸 陸奥湾 岩手県 Major Tsunami Attention 宮城県 Tsunami Database ･Quantitative Tsunami forecast (arrival time and Tsunami height) ･Tsunami warning for 66 regions

What we need for Tsunami Warning Generation of Tsunami Occurrence of Earthquake Detection of Seismic Wave Components of tsunami warning system Network of seismographs Real time data transmission Determination of Magnitude and Hypocenter Detection of Tsunami Re-evaluation of Tsunami Real time data processing system Evaluation of Tsunami Criteria for Tsunami grade Issuance of Tsunami Warning Communication facility to disseminate Tsunami Warning Issuance of Tsunami Information Network of tide gauge to monitor tsunami

3 DART-like systems deployed

n June 2005: IOC General Assembly decided resolutions on the establishment of a global and three regional Intergovernmental Coordination Groups on TEWS for - the Indian Ocean (ICG/IOTWS) - the Caribbean (ICG/CARTWS) - the NE Atlantic and Med (ICG/NEAMTWS)

Three more regions to coordinate

GLOBAL Tsunami Warning and Mitigation System 3 Oceans 4 Seas

WG 1/ICG/PTWS n Infrastructure of Seismic Network cooperation CTBTO, FDSN (real time) n Filling in the network gaps local tsunami/national system n New technologies for tsunami warning GPS, deep sea observation n Sharing operational techniques develop real-time operational system

Next-Generation --Tsunami Warning System-Real time GPS processing system n Enhancement of real time analyzing system n Real time tsunami numerical modeling n Strengthen cooperation between science communities and tsunami warning centers