ORSNET CONCEPT: A PACIFIC INTERNATIONAL COOPERATION FOR SEISMIC HAZARDS MITIGATION
Based on long term cooperation between Vanuatu and New Caledonia (IRD) seismic departments, and recent creation of New Caledonia seismic network, join Vanuatu/New Caledonia seismic network is now running since early 2012, with alert triggering times frequently less than two minutes for closest events.
Attention of neighbouring Southwest Pacific island countries (SWPICs) and international institutions such as CTBTO and UNESCO has been drawn and has led to the concept of data sharing and alert dissemination between SPICs participants, through ORSNET (Oceania Regional Seismic NETwork). ORSNET is currently associating PNG, Solomons, New Caledonia, Vanuatu, Fiji, Tonga, and Samoa. First ORSNET stations’ data is now collected in ORSNET data centre, located in Nouméa, New Caledonia, launched in March 2014. Upon completion, a total number of about sixty real time seismic stations is planned, and a significant reduction in seismic alert triggering time is expected.
First results will be presented, as well as future prospects, such as SWPICs warning centre of IRD centre in IRD Nouméa, New Caledonia.
(*) Cavascope : The broadband seismological network of the New Hebrides subduction zone and its associated database, R. Pillet, P. Lebellegard ; E. Garaebiti and D. Rouland, SRL, VOL. 79, NO. 4, pp. 498-503