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The Group Structure of Surface Waves in the Black Sea.

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Title: The Group Structure of Surface Waves in the Black Sea.
Authors: Zapevalov, A. S.1 (AUTHOR) sevzepter@mail.ru
Source: Izvestiya, Atmospheric & Oceanic Physics. Feb2026, Vol. 62 Issue 1, p41-48. 8p.
Subject Terms: *Surface waves (Fluids), *Hilbert transform, *Rogue waves, *Kurtosis, *Statistics, *Wave packets, *Ocean
Geographic Terms: Black Sea
Abstract: The purpose of this work is to analyze the statistical characteristics that determine the group structure of surface waves in the Black Sea. The analysis used data from wave measurements taken from a stationary oceanographic platform located in the Black Sea. The isolation of the wave envelope, from which the groupiness factor GFH and the length group GLF were calculated, was carried out by several methods based on the Hilbert transform and the SIWEH function. It is shown that there is a statistical relationship between the excess kurtosis of surface elevations E and obtained by different methods GFH; the correlation coefficient of these parameters in the region is in ranges from 0.35 to 0.49. The existence of a statistical relationship indicates that with the development of the group structure of sea surface waves, the likelihood of extreme waves increases. It is shown that the values GFH and GLF obtained within the framework of existing calculation methods can differ significantly quantitatively. At the same time, they equally reflect general trends in changes in the studied parameter, in particular, the dependence of GFH on the excess kurtosis of surface elevation. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194255842
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: The Group Structure of Surface Waves in the Black Sea.
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  Data: *<searchLink fieldCode="DE" term="%22Surface+waves+%28Fluids%29%22">Surface waves (Fluids)</searchLink><br />*<searchLink fieldCode="DE" term="%22Hilbert+transform%22">Hilbert transform</searchLink><br />*<searchLink fieldCode="DE" term="%22Rogue+waves%22">Rogue waves</searchLink><br />*<searchLink fieldCode="DE" term="%22Kurtosis%22">Kurtosis</searchLink><br />*<searchLink fieldCode="DE" term="%22Statistics%22">Statistics</searchLink><br />*<searchLink fieldCode="DE" term="%22Wave+packets%22">Wave packets</searchLink><br />*<searchLink fieldCode="DE" term="%22Ocean%22">Ocean</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Black+Sea%22">Black Sea</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The purpose of this work is to analyze the statistical characteristics that determine the group structure of surface waves in the Black Sea. The analysis used data from wave measurements taken from a stationary oceanographic platform located in the Black Sea. The isolation of the wave envelope, from which the groupiness factor GFH and the length group GLF were calculated, was carried out by several methods based on the Hilbert transform and the SIWEH function. It is shown that there is a statistical relationship between the excess kurtosis of surface elevations E and obtained by different methods GFH; the correlation coefficient of these parameters in the region is in ranges from 0.35 to 0.49. The existence of a statistical relationship indicates that with the development of the group structure of sea surface waves, the likelihood of extreme waves increases. It is shown that the values GFH and GLF obtained within the framework of existing calculation methods can differ significantly quantitatively. At the same time, they equally reflect general trends in changes in the studied parameter, in particular, the dependence of GFH on the excess kurtosis of surface elevation. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=194255842
RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1134/S0001433826700039
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 41
    Subjects:
      – SubjectFull: Surface waves (Fluids)
        Type: general
      – SubjectFull: Hilbert transform
        Type: general
      – SubjectFull: Rogue waves
        Type: general
      – SubjectFull: Kurtosis
        Type: general
      – SubjectFull: Statistics
        Type: general
      – SubjectFull: Wave packets
        Type: general
      – SubjectFull: Ocean
        Type: general
      – SubjectFull: Black Sea
        Type: general
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      – TitleFull: The Group Structure of Surface Waves in the Black Sea.
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              Text: Feb2026
              Type: published
              Y: 2026
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