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The Galicia HF experience, part 2: scientific output and analysis of the benefits of the technology


Enrique Álvarez Fanjul1, Marta de Alfonso Alonso 1, José Damián López 1, Ana Julia Abascal 2, María Inmaculada Ferrer Sanz 3, Justo Conde Criado 4, Andres Alonso Martirena 5
1 Puertos del Estado
2 Universidad de Cantabria
3 Imedea
4 Instituto Nacional de Meteorología
5 Qualitas Remos


Two long-range CODAROS SeaSonde HF radar stations were installed and operated for three months (Nov 2005 to Feb 2006) in the Galician coast, the main area affected by Prestige disaster. During this period, all the produced data were freely distributed in real time via Internet. The dissemination system was fully integrated with the Puertos del Estado web products, which are providing real time data of several oceanographic and atmospheric parameters, such as sea level and waves. One of the buoys of the Puertos del Estado Deep Water network, equipped with a current meter, is moored in the area covered by the Radar system. Analysis of the three months of data show good correlation between both sources of information (RMS of 5.11 cm/s for u component and 6.67 cm/s for v). Additionally, a lagrangian buoy was released in the area in order to analyze the benefit of employing HF radar currents for the tracking of drifting objects. The trajectory of the buoy was analyzed in the frame of ESEOO project. A particle model was employed with and without the use of HF radar currents. Results of the experiment clearly show a positive impact of the use of measured currents. When using HF data, the search and rescue areas are reduced, in average, a 49%. In this work, results from this experience will be analyzed in detail, making special focus in the scientific aspects of the comparison with the moored and drifting buoys.

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