​OCEANLYZ, Ocean Wave Analyzing Toolbox 


​Oceanlyz is a Matlab toolbox for analyzing measured waves data. Series of Matlab functions are presented in this toolbox which are developed in order to analyzing measured waves data either from the field (i.e. at the ocean, sea, lake, or coastal area) or from the laboratory. This toolbox is capable of analyzing data measured by wave gauges, wave logger, wave staff, ADV or any other instruments that used for data collections. Although this toolbox developed for ocean/sea waves, it can be used for analyzing any type of wave data.
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List of selected applications for this package:
  • Calculating wave properties from field/lab measured data.
  • Using spectral analysis and zero-crossing method for wave analyzing.
  • Partitioning wave spectra and separating wind-sea and swell data. 
  • Correcting pressure data that read by pressure sensor to account for pressure attenuation in depth.
  • Applying Diagnostic Tail.
List of selected parameters that can be calculated with this package:
  • Zero-Moment Wave Height
  • Sea/Swell Wave Height 
  • Significant Wave Height
  • Mean Wave Height 
  • Wave Power Spectral Density 
  • Peak Wave Frequency 
  • Peak Wave Period 
  • Peak Sea/Swell Period 
  • Mean Wave Period
  • Significant Wave Period 
Citation:
Karimpour, A., & Chen, Q. (2017). Wind Wave Analysis in Depth Limited Water Using OCEANLYZ, a MATLAB toolbox. Computers & Geosciences, 106, 181-189. Link

Version 1.3

What is new in ver 1.3:
  • Tail correction for spectral analysis is improved
  • Correcting pressure data for pressure attenuation is improved
  • Sea/Swell partitioning is improved 

Version 1.2

What is new in ver 1.2:
  • The NFFT now can be assigned as an input.
  • Automatic calculation of the upper limit frequency for the dynamic pressure corrections added.
  • Zero-Crossing method modified.
  • Mean water level calculation modified.
  • Significant wave period added.
  • Calculation of peak wave frequency based on the weighted integral added.
  • Parameter notations are updated. 

Download Ver 1.3

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User Manual

oceanlyz_user_manual.pdf
File Size: 882 kb
File Type: pdf
Download File
Notes:
  • These functions are not stand alone software. In order to run these functions, Matlab software or any alternative for that should be first installed. 
  • Previous versions are not supported anymore.
  • All input files should be as a column vector, i.e. (n,1). Please refer to user manual for more information.

Correcting Field Measured Wave Data

This technical note explains how to correct the data measured at the filed. Correction for pressure attenuation in water depth and applying diagnostic tail is explained.
oceanlyz_technical_note.pdf
File Size: 462 kb
File Type: pdf
Download File

Functions:

Calculating Wave Parameters Using Spectral Analysis Method
Function “WaveSpectraFun.m” calculates wave properties using wave surface elevation Power spectral density. 

Calculating Wave Parameters Using Zero-Crossing Method
Function “WaveZerocrossingFun.m” calculates wave properties using upward zero-crossing method. 

Correcting Wave Pressure Data Using Fast Fourier Transform
Function “PcorFFTFun” corrects water level data measured by pressure sensors using pressure response factor, or pressure attenuation coefficient, and Fast Fourier transform. 

Correcting Wave Pressure Data Using Linear Wave Theory
Function “PcorZerocrossingFun.m” corrects water level data measured by pressure sensors using pressure response factor, or pressure attenuation coefficient, and zero crossing method. 

Separating Sea and Swell
Function “SeaSwellFun.m” separate sea wave from swell wave using wave surface elevation power spectral density.
Sample File
This is a sample file contain one burst of real data measurements. Properties of measurement are:

Recording frequency (fr) : 10 (Hz)
Recording duration (duration) : 1024 (second). This is a one burst duration.
Pressure sensor height from bed (heightfrombed) : 0.0 (m). Sensor located on the bed.
Mean water depth (dm) : 1.07 (m)
input.zip
File Size: 60 kb
File Type: zip
Download File
Statements:
Oceanlyz is a free software which is distributed ONLY for scientific purposes. It is a user responsibility to check the final results for any possible errors. By downloading this package, user agreed that user is the only person held responsible for using the package. The user is fully responsible for all the outcomes of using this package and developer does not liable and responsible in any way for any problems, shortcomings, errors, and consequences regards of using of this package and its results for any purposes.