HR: 1340h
AN: S53A-1030    [Abstracts]
TI: EC-NEAREST project: First Tsunami Underwater Observatory in the Gulf of Cadiz
AU: * ZITELLINI, N
EM: nevio.zitellini@bo.ismar.cnr.it
AF: Istituto di Scienze Marine-CNR, ISMAR-CNR, Italy, Riva Sette Martiri - Castello 1364/A, Venezia, 30122, Italy
AU: FAVALI, P
EM: PAOLOFA@INGV.IT
AF: Istituto Nazionale di Geofisica e Vulcanologia, VIA DI VIGNA MURATA, 605, ROMA, I-00143, Italy
AU: GERBER, H
EM: hwgerber@naoe.tu-berlin.de
AF: Technische Fachhochschule Berlin, LUXEMBURGER STRASS 10, BERLIN, 13353, Germany
AU: BAPTISTA, M V
EM: MABAPTISTA@DEC.ISEL.IPL.PT
AF: ISEL, FFCUL, CAMPO GRANDE EDIFICIO C1 3º, LISBOA, 1749 016, Portugal
AU: CARRILHO, F
EM: FERNANDO.CARRILHO@METEO.PT
AF: INSTITUTO DE METEOROLOGIA, RUA C AEROPORTO DE LISBOA, LISBOA, 1749 077, Portugal
AU: DAÑOBETIA, J
EM: jjdanobeitia@cmima.csic.es
AF: Consejo Superior de Investigaciones Cientificas, C.SERRANO 17, MADRID, 28006, Spain
AU: JOKAT, W
EM: jokat@awi-bremerhaven.de
AF: Consejo Superior de Investigaciones Cientificas, CSIC, Spain 7 Alfred Wegener Institute, AWI, Germany Consejo Superior de Investigaciones Cientificas, CSIC, Spain 7 Alfred Wegener Institute, AWI, Germany Alfred Wegener Institute, HAM HANDELSCHAFEN, 12, BREMERHAVEN, 27570, Germany
AU: GUTSCHER, M
EM: gutscher@univ-brest.fr
AF: Université de Bretagne Occidentale, RUE DES ARCHIVES 3, BREST, 29295, France
AU: MORALES, J
EM: morales@iag.ugr.es
AF: Instituto Andaluz de Geofisica de Granada, UNIV DE GRANADA CUESTA DEL HOSPICIO, GRANADA, 18071, Spain
AU: ELMOURAHOUA, A
EM: elmouraouah@cnr.ac.ma
AF: Centre National pour la Recherche National pour la Recherche Scientifique et Technique, 52, CHARII OMAR IBN ALKHATABB AGDAL, RABAT, 8027, Morocco
AU: CAETANO, H
EM: herculano.caetano@xistos.com
AF: XISTOS DEVELOPPMENT SA, 5, RUE MICHEL PETER, PARIS, 75013, France
AB: On August 25 at 10:15 p.m. G.M.T. the first prototype of an underwater tsunami observatory was successfully deployed at 3207 m water depth in the Gulf of Cadiz. The deployment,150 km South of Portugal, was planned within the NEAREST project (Integrated observations from NEAR shore sources of Tsunamis: towards an early warning system – EC, cont. 37110) The observatory is based on the GEOSTAR platform, previously developed by a consortium led by INGV. The ocean bottom equipment includes a broad-band seismometer, hydrophone, gravitymeter and pressure gauge, allowing for cross-checking of the signals. Pre-processing of seismic and pressure data is done underwater. A relay surface buoy, equipped with additional meteorological sensors, is in acoustic link with the seafloor platform and performs satellite real-time transmission to the shore stations, where the integration of the marine with land data from operating networks will improve the reliability of the tsunami detection strategy. Additional sensors can be installed, in a framework of a multi-parameter seafloor observatory, able to characterise earthquake/ tsunami processes and to extend its capacity to a larger set of monitoring strategies. The deployment, performed by the R/V Urania, was supervised by a team of scientists and engineers from the partners in the project. The site of the seafloor observatory was selected according to the available geological and bathymetric data, to maximise proximity to the potential sources; its present position is 36º 21.875'N;09º28.885'W; 3207 m w.d. Data are currently being acquired and processed on an experimental basis and integrated with information from land monitoring networks of: Portugal, Spain and Morocco.This observatory is an important milestone towards a European tsunami warning system - UNESCO IOC resolution of December 2005 to develop the "North East Atlantic and Mediterranean Tsunami Warning System".
DE: 4564 Tsunamis and storm surges
DE: 6309 Decision making under uncertainty
DE: 7215 Earthquake source observations (1240)
DE: 7220 Oceanic crust
SC: Seismology [S]
MN: 2007 Fall Meeting