The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The European project “Wind, Ports, and Sea” (VPM), funded by the European Cross-border Programme “Italy-France Maritime 2007–2013”, aims to improve the safety conditions and to reduce the hazards by the development of a coupled monitoring and forecast system of the sea-state outside the main harbors of the Northern Tyrrhenian and Ligurian Seas. In particular, the sea and wind forecasts are evaluated...
Puertos del Estado has made noticeable efforts to articulate a HF coastal ocean radar network with the aim of strengthening its observational infrastructure. In recent years, four HF radar Codar SeaSonde systems have been deployed along the Spanish coastline. Active and planned development efforts to implement a fully operational radar network include: homogenization of maintenance practices, quality...
In the present paper Lagrangian Coherent Structures are detected in the Gulf of Trieste, i.e., a Gulf located in the north-eastern part of the Adriatic Sea. Lagrangian Coherent Structures are usually detected through Lyapunov exponent diagnostic tools. However, such diagnostics lack of a rigorous mathematical background and try to associate well-known classical dynamical system structures of autonomous...
Recent reports have shown high-frequency (HF) radar measurements of tsunami signatures as the disturbance propagates from deep water to shallow water across the edge of the continental shelf. Most HF radars are optimised in various ways to measure seasonal circulation, tidal currents or sub-tidal structures. The new data provide the basis for the design of an optimised HF radar installation for the...
The Institute of Marine Sciences (ISMAR) of the National Research Council of Italy (CNR) established a High Frequency (HF) Coastal Radar Network for the measurement of the velocity of surface currents in coastal seas. The network consists of four HF radar systems located on the coast of the Gargano Promontory (Southern Adriatic, Italy). The network has been operational since May 2013 and covers an...
The high-quality backscattered spectra provided by the WERA HF radar systems in the Wave Hub area are used to estimate different wave parameters at the location of a wave buoy. The HF radar estimations are done using three different wave estimation algorithms: the standard WERA software, the software provided by Actimar and the software provided by Seaview Sensing. The data obtained with each methodology...
The synthesis of large thinned planar arrays with arbitrary lattice is addressed. A novel strategy based on statistical density tapering and genetic algorithms is developed to efficiently deal with large number of unknowns limiting the computational burden. Selected numerical results are reported to show the effectiveness of the proposed methodology.
A promising trend in HF systems design for ocean surface mapping application is to change it from the land-based to platform-based. One of the new challenges to be faced is the motion of the platform, which will cause sampling jitter. This paper examines the effects of random jitter in sampling locations in the radar power spectrum, from which wind direction measurements are made. Random jitter leads...
The surface current observations made by HF radar systems are increasingly being relied on to support decision-making by coastal ocean users and managers. Thus, the need for high quality data with defined error characteristics has never been higher. Building on previous efforts, this paper examines the use of ‘radial metrics’, the ancillary output of the direction finding algorithm used by the SeaSonde...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.