Wave directional spectrum from array measurements

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dc.contributor.author Fernandes, A.A.
dc.contributor.author Sarma, Y.V.B.
dc.contributor.author Menon, H.B.
dc.date.accessioned 2009-01-21T11:25:25Z
dc.date.available 2009-01-21T11:25:25Z
dc.date.issued 1996
dc.identifier.citation International Conference in Ocean Engineering COE '96, 17-20 Dec 1996. Proceedings, 243-248p.
dc.identifier.uri http://drs.nio.org/drs/handle/2264/2267
dc.description.abstract Using the method of Esteva (1976, 1977), whcih assumes that at the frequency band the waves approach from just a single "mean" wave direction, wave direction has been consistently, accurately and unambiguously evaluated as a function of frequency, from time series observations of wave elevation at a 15-gauge polygonal array, in 8 m water depth, operational at the Field Research Facility (FRF) at Duck, North CArolina, USA. It was found that, a maximum of 15 redundant estimates of wave direction has a standard deviation of less than less than4 degrees in the range 14-4 s during 1-6 February, 1994 and that swell of 10 sec came from the east. A developing sea during the time period 01-13 hours on 2 February, was due to a Northeaster, owing to which the wave direction in the wave period range 7-4 s aligned itself with the wind direction, and the significant wave height increased for 0.70 to 1.5 m. Estimates of wave direction using Esteva's method were in agreement with those obtained by the FRF using the conventional Iterative Maximum Likelihood Estimation method, which assumes that at a given frequency waves can approach simulteneously from all directions.
dc.language.iso en
dc.publisher Allied, Chennai (India)
dc.rights Copyright [1996]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subject offshore engineering
dc.subject wave direction
dc.subject directional spectra
dc.subject wave measuring equipment
dc.subject time series analysis
dc.subject wave period
dc.subject wave height
dc.title Wave directional spectrum from array measurements
dc.type Conference Article


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