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primary topic: Directional spreading resolution from point measurements for mixed seas and sea states with frequency dependent spreading

Directional spreading resolution from point measurements for mixed seas and sea states with frequency dependent spreading
type: AcademicArticle
type: Article
abstract: Recently (Adcock and Taylor, 2009) devised a method to estimate the underlying directional spreading from a single point measurement. Subsequently, this method has been successfully applied to sea states with frequency independent directional spreading. In contrast, the present work has applied this method to synthetic sea states generated with an underlying frequency dependent spreading. However, in the application of the method, it was assumed that the underlying sea states have a frequency independent spreading. It was found that applying this method in this manner predicts directional spreading that is close to the spectrally averaged spreading. Reâ��computing the widely used Velocity Reduction Factor (VRF) based on the predictions from the new method showed that it agreed within ±1.5 with the actual value, showing that a reasonable estimate of the directional spreading can be obtained by the new method even under the restrictive assumption of frequency independent spreading. The major implication of these findings is that, a reasonable estimate of the directional spreading function can be obtained for sea states with complex spreading from a single point measurement even with the assumption of frequency dependent spreading. © 2021 Elsevier Ltd
date: 2021
volume: 229
is part of: Ocean Engineering
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Elsevier Ltd
type: Organization

Ocean Engineering
type: Collection
issn: 00298018

D.K. Kim
type: Person
given name: D.K.
family name: Kim

M. Latheef
type: Person
given name: M.
family name: Latheef

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primary topic: Directional spreading resolution from point measurements for mixed seas and sea states with frequency dependent spreading