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The CENALT

The CENALT. Key dates of the French tsunami warning centre project. November 2005 : first international meeting on tsunami alert systems in the Mediterranean April 2006 : CEA is requested by the ministry of the interior to implement a tsunami warning centre in the Mediterranean

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The CENALT

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  1. The CENALT

  2. Key dates of the French tsunami warning centre project November 2005 : first international meeting on tsunami alert systems in the Mediterranean April 2006 : CEA is requested by the ministry of the interior to implement a tsunami warning centre in the Mediterranean November 2007 : France announces during ICG IV its decision to establish a warning centre for the Western Mediterranean • 22nd September 2009 : signature of the agreement between the ministry of the interior and the ministry of sustainable development and CEA, SHOM and CNRS, tasking them to develop and implement the tsunami warning centre • 1st July 2012 : tsunami warning centre is operational

  3. The CENALT : national mandate and international objectives • The CENALT : • Warns French civil security authorities, within fifteen minutes of a potentially tsunamigenic event occurring in the West Mediterranean Sea or in the North Eastern Atlantic Ocean, transmitting pertinent parameters of the event • Advises within 15 minutes NEAM candidate tsunami watch providers, national tsunami warning centres and tsunami focal points, • Sends confirmation/ cancelation messages: latency related to the tide gauge data availability Formation CENALT Novembre 2011

  4. Upgrade of tide gauges (SHOM) . • Upgrade of 34 stations equipped with high sampling rate and real-time transmission • Direct connection to the CENALT through VPN • 10 stations on GTS • All data available on IOC website

  5. Secured operational network Optimal cooperation between seismic station network operators Cooperation in progress for tide gauge network operators Private telecommunication network for data transmission and message dissemination IGN IPMA INGV CTBTO GFZ INM ROA UCM COGIC Météo France GTS

  6. CENALT IN OPERATION Monitoring Systems CENALT Bruyères-le-Châtel Civil Protection Seismic Data processing detection, location magnitud Tsunami arrival time and warning level •  Tsunami alert to the public • beaches, harbours evacuation Validation, messages dissemination By expert on duty 24h/24 Sealeval 2 mn 5 mn 10 mn 15 mn 60 mn OPERATIONAL SINCE 1 JULY 2012

  7. CENALT : SOFTWARE PROCESS Sealevel GUITAR Record, Display Tsunami measurements Message Dissemination MARMOT (ligne COGIC, GTS, fax, email,) Communication Tests, exercises Seismology SEISCOMP3 Détection Localisation Magnitude Échange de données Cassiopée ScsnariiAgregation Calypso Real-time Modeling Initial Message Alertgoing on Alert Reporting Alert Seismic and sealevel monitoring T0+8h Report T0+2j Report End of Message Supplementary Message Supplementary Message Tsunami Mesaurement Message 15mn Tsunami arrival time Detectioncapacities MASCARET RAPPORT_8H

  8. The CENALT, automatic detection and interactive processing Earthquake detection in real time: time origin, association, automatic location, magnitude calculation Continuous sea-level data reception Historical events database - Data and communications flow - Archiving of raw data - Data format conversion Continuous sea-level signal reception (Atlantic ocean, Channel, Mediterranean sea)

  9. Estimation of tsunami arrival times Map of arrival times for a given event

  10. Network capability monitoring Sea level information delay Event location accuracy Seismic detection delay

  11. CENALT Operation since July 1st 2012 * From July 1st to October 19, 2012

  12. CENALT Operation since July 1st 2012 ALERT • Earthquake Detection 280 events* in the NEAM region 2240 events* at a global scale • Tsunami Detection • Data analysis, threat evaluation280 events* in the NEAM region 2240 events* at a global scale • Monitoring of the whole system capability • 5. Elaborate and transmit alert and test messages11 routine communication tests (fax, email and GTS) • 1st message received in less than 2 minutes MONITORING

  13. 1st International Tsunami Exercise in the European region

  14. Intergovernmental Coordination Group for the Tsunami Early Warning and Mitigation System in the North Eastern Atlantic, the Mediterranean and connected Seas (ICG/NEAMTWS) Five Candidate Tsunami Watch Provider (CTWP) Achievement 2012 3 National Tsunami Warning Centers NTWC /CTWP Operating France CENALT Italy Portugal Turkey KOERI Greece NOA

  15. Level of warning INTERNATIONAL FRANCE YELLOW YELLOW ORANGE RED Formation CENALT Novembre 2011

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