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2009 WRI World Congress on Computer Science and Information Engineering
Spatial Tracking of Numerical Wave Model Output Using a Spiral Search Algorithm
Los Angeles, California USA
March 31-April 02
ISBN: 978-0-7695-3507-4
Numerical ocean wave models output a frequency-direction energy spectrum at each grid point in space and time over a defined domain (e.g. the Pacific Ocean). After identifying each wave component (wind-sea, young swell and mature swell) using a spectral partitioning technique, a spiral search algorithm is used to identify the different wave systems, which are a cluster of wave-components propagating from a common origin on the ocean. This spiral search algorithm is being tested on output from two different wave models: the NOAA National Center for Environmental Prediction (NCEP) WaveWatch III and the Delft near-shore wave model SWAN (Simulating WAve Near shore). The tracking algorithm, prototyped in Matlab, spirals once through the entire domain to identify existing wave systems. A second loop then combines neighboring wave systems initially separated by land.
Index Terms:
spiral, wave, tracking, map, Matlab
Citation:
Eve-Marie Devaliere, Jeffrey L. Hanson, Rick Luettich, "Spatial Tracking of Numerical Wave Model Output Using a Spiral Search Algorithm," csie, vol. 2, pp.404-408, 2009 WRI World Congress on Computer Science and Information Engineering, 2009
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