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Measurements and analysis of primary ship waves in the Stockholm Archipelago, Sweden

Almström, Björn LU and Larson, Magnus LU (2020) In Journal of Marine Science and Engineering 8(10).
Abstract

Primary ship waves generated by conventional marine vessels were investigated in the Furusund fairway located in the Stockholm archipelago, Sweden. Continuous water level measurements at two locations in the fairway were analyzed. In total, 466 such events were extracted during two months of measurements. The collected data were used to evaluate 13 existing predictive equations for drawdown height or squat. However, none of the equations were able to satisfactorily predict the drawdown height. Instead, a new equation for drawdown height and period was derived based on simplified descriptions of the main physical processes together with field measurements, employing multiple regression analysis to derive coefficients in the equation. The... (More)

Primary ship waves generated by conventional marine vessels were investigated in the Furusund fairway located in the Stockholm archipelago, Sweden. Continuous water level measurements at two locations in the fairway were analyzed. In total, 466 such events were extracted during two months of measurements. The collected data were used to evaluate 13 existing predictive equations for drawdown height or squat. However, none of the equations were able to satisfactorily predict the drawdown height. Instead, a new equation for drawdown height and period was derived based on simplified descriptions of the main physical processes together with field measurements, employing multiple regression analysis to derive coefficients in the equation. The proposed equation for drawdown height performed better than the existing equations with an R2 value of 0.65, whereas the equation for the drawdown period was R2 = 0.64. The main conclusion from this study is that an empirical equation can satisfactorily predict primary ship waves for a large data set.

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Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Drawdown, Predictive equations, Restricted waterways, Ship wave measurement, Ship waves
in
Journal of Marine Science and Engineering
volume
8
issue
10
article number
743
pages
23 pages
publisher
MDPI AG
external identifiers
  • scopus:85093695944
ISSN
2077-1312
DOI
10.3390/jmse8100743
project
Naturanpassade erosionsskydd i farleder
language
English
LU publication?
yes
id
5289bdde-39d0-4e34-b7b5-42ebaa8a3927
date added to LUP
2020-11-09 09:26:13
date last changed
2024-05-15 20:36:36
@article{5289bdde-39d0-4e34-b7b5-42ebaa8a3927,
  abstract     = {{<p>Primary ship waves generated by conventional marine vessels were investigated in the Furusund fairway located in the Stockholm archipelago, Sweden. Continuous water level measurements at two locations in the fairway were analyzed. In total, 466 such events were extracted during two months of measurements. The collected data were used to evaluate 13 existing predictive equations for drawdown height or squat. However, none of the equations were able to satisfactorily predict the drawdown height. Instead, a new equation for drawdown height and period was derived based on simplified descriptions of the main physical processes together with field measurements, employing multiple regression analysis to derive coefficients in the equation. The proposed equation for drawdown height performed better than the existing equations with an R<sup>2</sup> value of 0.65, whereas the equation for the drawdown period was R<sup>2</sup> = 0.64. The main conclusion from this study is that an empirical equation can satisfactorily predict primary ship waves for a large data set.</p>}},
  author       = {{Almström, Björn and Larson, Magnus}},
  issn         = {{2077-1312}},
  keywords     = {{Drawdown; Predictive equations; Restricted waterways; Ship wave measurement; Ship waves}},
  language     = {{eng}},
  number       = {{10}},
  publisher    = {{MDPI AG}},
  series       = {{Journal of Marine Science and Engineering}},
  title        = {{Measurements and analysis of primary ship waves in the Stockholm Archipelago, Sweden}},
  url          = {{http://dx.doi.org/10.3390/jmse8100743}},
  doi          = {{10.3390/jmse8100743}},
  volume       = {{8}},
  year         = {{2020}},
}