Example Page

The Gijon experiment has now ended, with data displayed at this address every 10 minutes for 6 weeks. The following is an example of wave parameters at Gijon (on 24/11/00 at 21:20).

Gijon HF Radar Wave Measurements

[locale map]

The WERA HF radar is currently sited on Gijon, on the northern coast of Spain, measuring waves and currents as part of the EU-funded EuroROSE project (MAS3CT980168).

Shown here are measurements of wave parameters that are being made using methods developed at University of Sheffield. The parameters are obtained from the full directional spectrum, which is itself obtained by an inversion of Doppler spectra provided by the WERA radar system. The white dots on the maps indicate where the inversion has been successful.

Very large changes in the parameters seen over rather small regions are probably due to noise in the radar signals rather than freak wave events. Research into methods to deal with such noisy signals is in progress at Sheffield University.

The maps are updated every 10 minutes (last update 12:04 GMT 05/12/2000) and this page will reload automatically every 10 minutes (provided your browser has automatic reloading of pages enabled).

Please note that we have had reports that the png (Portable Network Graphic) thumbnails used on this page are not displayed by some versions of Internet Explorer (in particular by Mac IE version 4.5).

Significant waveheight

[significant waveheight (full)]

Integrated over the full spectrum

Full PostScript version.

[significant waveheight (peak)]

Integrated over +/- 10mHz of the spectral peak

Full PostScript version.

Mean period

[mean period (full)]

Integrated over the full spectrum

Full PostScript version.

[mean period (peak)]

Integrated over +/- 10mHz of the spectral peak

Full PostScript version.

Directional Spectra

Sample directional frequency spectrum colour coded from blue (10% of the maximum) to red (maximum) in the direction towards which the waves are propagating. The arrow shows the radar measured wind direction towards which the wind is blowing.

[directional spectra]

Full PostScript version.

[directional spectra]

Full PostScript version.

Details of the positions of the cells whose id is shown in these diagrams can be found here .


J. J. Green and L. R. Wyatt, Dept. Applied Mathematics, The University of Sheffield.