eprintid: 14882
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/48/82
datestamp: 2023-11-10 03:29:28
lastmod: 2023-11-10 03:29:28
status_changed: 2023-11-10 01:58:03
type: article
metadata_visibility: show
creators_name: Latheef, M.
creators_name: Kim, D.K.
title: Directional spreading resolution from point measurements for mixed seas and sea states with frequency dependent spreading
ispublished: pub
keywords: Directional spectrum; Directional spreading; Frequency dependent spreading; Frequency independent; Frequency-dependent; Mixed seas; Point measurement; Re-computing; Sea state; Single-point measurement, Ocean currents, measurement method; seawater; spectral analysis
note: cited By 1
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. Re�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
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104440877&doi=10.1016%2fj.oceaneng.2021.108933&partnerID=40&md5=fef78167f1888de3fef5beb2d3c28a16
id_number: 10.1016/j.oceaneng.2021.108933
full_text_status: none
publication: Ocean Engineering
volume: 229
refereed: TRUE
issn: 00298018
citation:   Latheef, M. and Kim, D.K.  (2021) Directional spreading resolution from point measurements for mixed seas and sea states with frequency dependent spreading.  Ocean Engineering, 229.   ISSN 00298018