A wavelet-based test for swell stationarity

被引：4

作者：

Ewans, Kevin C. ^{[1
]}

机构：

[1] Shell Int Explorat & Prod BV, Zuid Holland, Netherlands

来源：

APPLIED OCEAN RESEARCH | 2015年 / 51卷

关键词：

Swell stationarity; Wavelet transform; LNG barge; Offloading; OCEAN WAVES; HILBERT SPECTRUM; WIND-WAVES; TIME;

D O I：

10.1016/j.apor.2015.01.005

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

The temporal behaviour of swell is examined using the wavelet transform, and a test of stationarity using the wavelet transform is described. The method is demonstrated on time series data from a Directional Waverider buoy deployed at Duck, North Carolina, and it is shown that non-stationary sea states are usually associated with local wind-sea growth rather than significant changes in the swell component, which can be considered stationary for at least as long as the 160-min records. This is close to the 3h duration that is typically assumed for a stationary sea state. The stationary character of swell is an important result for offloading from an LNG barge to carrier. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：255 / 267

页数：13

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