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Springer Proceedings in Earth and Environmental Sciences

ISSN:2524342

2025

Pokazeev, K.V. ¹

10.1007/978-3-031-88459-7_17

The characteristics of a complex wave field, which is a superposition of two wave systems, each of which has a pronounced group structure, are investigated. The analysis is carried out by numerical simulation based on an analytical model, within which the wave envelope of each wave system is specified. The Hilbert transform is used to isolate the wave envelope of a complex wave field. The main characteristics of the group structure of sea waves are the groupiness factor of height (GFH) and the group length factor (GLF). It is shown that these characteristics in a complex wave field (subscript ) they depend on the energy ratio of the two wave systems (subscript 1 and 2). If the significant height of the waves of one system is more than twice the significant height of the waves of another system, i.e. their energies differ by more than four times, then the parameter is close to groupiness factor of height of the dominant wave system. When and the parameter satisfies the relations , ; when and , differ noticeably the parameter takes an intermediate value between and . The group length factor is also sensitive to changes in the ratio . If , then there is a sharp decrease in the average group length factor, and two conditions are simultaneously met and .

group length factor, group structure, groupiness factor of height, Hilbert transformation, sea waves, wave envelope

2025-08-23 16:56:03 (квартал- II)