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Acknowledgements: The N.A.V.I.G.A.T.O.R.S. Network was funded by Fundação para a Ciência e a Tecnologia (FCT) under the National Scientific Reequipment Programme, partially supported by the EU (ERDF) . Participation of ISRabat was supported by an EERWEM grant under the San Fernando MOU Reference: T. Kraft, W. Hanka, J. Saul and GITEWS-EMS Team (2007), GEOFON and the Indian Ocean Tsunami Warning System, JAMSTEC-GLORIA Symposium, Yokohama, Japan ORFEUS-NERIES observatory coordination workshop, Sinaia, Romania, 7 - 11 May 2007 The N.A.V.I.G.A.T.O.R.S. VBB Network, part of the new National Geophysical Network of Portugal (RNG) Joao Fonseca, Instituto Superior Tecnico, Lisbon, Portugal (on behalf of the N.A.V.I.G.A.T.O.R.S. Team) The N.A.V.I.G.A.T.O.R.S. Network was proposed to the Portuguese Research Foundation in 2001, under the scope of a National Scientific Reequipment Programme. In 2002 the project was presented at the ORFEUS Barcelona Workshop. Wisdom would recommend to present it again only after completion and full operation. However, a final funding decision was only taken in late 2006 (!), and the contract is currently being signed. On the positive side, the long delay was the result of a political decision to integrate the N.A.V.I.G.A.T.O.R.S. Network on a broader structure, the National Geophysical Network (RNG), with an M.O.U. subscribed by several institutions (IM, IST, Univ. Evora, Univ. Lisbon, Univ. Porto) based on the principle of free distribution of all data in real time, both among the partners and through international data centers. In exchange for the free distribution of data, the research foundation FCT will sign contracts with the operators to cover the running costs. RNG’s project GRID-PT (PI Antonio Amorim, present at this workshop) handles the issues of data concentration and distribution. A paralel project will allow the hiring of 2 post-doc staff (5 yr). Azores stations (2): will be operated by the Univ. of Azores (Joao Carlos Nunes), with ADSL links to the local Lab in Ponta Delgada, and VSAT links to IST. Porto Santo Station: will be operated by IST with Local support by AREAM. VSAT link to IST. Power will be supplied by an H2 cell, under the scope of a different project. Sth. Morocco Station: will be operated by Scientific Institute of Rabat (Abdelkrim Rimi), as a result of the EERWEM San Fernando MOU. Will have an ADSL to Rabat and a VSAT link to IST. Porto station: will be operated by Geophysical Institute of Univ. Porto (Manuel Salgueiro), with ADSL link to Porto and VSAT link to IST. Coimbra station: will be operated by Geophysical Institute of Univ. Coimbra (Ivo Alves), with ADSL link to Coimbra and VSAT link to IST. Sth. Portugal stations (2): will be operated by IST (Joao Fonseca), with ADSL and VSAT links to IST. IST hub:the most ambitious component of the network, the hub will receive a single downlink (~200kHz) with data from up to 30 stations. Part of bandwidth is available for sharing. IST HUB The N.A.V.I.G.A.T.O.R.S. Project is a cooperative effort of IST, Geophysical Institute of the University of Porto, Geophysical Institute of the University of Coimbra, University of Azores and Regional Environmental Agency of Madeira (AREAM). All 8 seismic stations of the network will have VBB sensors with a flat response from 120s to 30Hz, real 24-bit digitizers, and VSAT telemetry. We hope that the VSAT telecommunications infrastructure to be installed will be shared by other users to retrieve their data from any type of sensor in the area of coverage, with IST serving as a point of entry in the internet. N.A.V.I.G.A.T.O.R.S. Team: Joao Fonseca (IST), Susana Vilanova (IST), Sandra Heleno (IST), Carlos Sousa Oliveira (IST), Joao Carlos Nunes (Univ. Azores), V.H. Forjaz (Univ. Azores), Manuel Salgueiro (Geophys. Inst. Univ. Porto), Ivo Alves (Geophys. Inst. Univ. Coimbra), J.M. Melim Mendes (AREAM, Madeira), Abdelkrim Rimi (IS Rabat), and counting ....

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