Author(s)

XinTong Wang^*, JianSheng Zhang 

Affiliation(s)

Department of Physics, School of  Sciences, Xi’an Technological University, Xi’an 710021, Shaanxi, China. 

Corresponding Author

XinTong Wang

ABSTRACT

To further investigate the formation mechanism, distribution characteristics, and distribution patterns of wave-induced magnetic fields, this study employs the Pierson-Moskowitz wave spectrum combined with the JONSWAP spectrum and Weaver electromagnetic theory. Using Monte Carlo random sampling, it simulates the dynamic characteristics of a two-dimensional sea surface under varying wind speeds. Maxwell's equations are applied to formulate expressions for the wave-induced magnetic field. The primary focus is simulating the three-dimensional spatial distribution and spectral characteristics of the induced magnetic field under different wind speed scenarios. Simulation results indicate: The PM spectrum is suitable for describing fully developed sea conditions characterized by uniform wave energy distribution and gentle waveforms. The JONSWAP spectrum is more applicable to developing wind-driven waves, exhibiting concentrated energy, steep waveforms, and higher induced magnetic field intensities. As wind speed increases, both spectra exhibit a trend of peak frequency migration toward lower frequencies. The induced magnetic field amplitude corresponding to the JONSWAP spectrum is significantly higher than that of the PM spectrum. These findings provide theoretical and simulation support for noise modeling and signal extraction in marine electromagnetic detection.

KEYWORDS

Pierson-Moskowitz wave spectrum; JONSWAP spectrum; Wave-induced magnetic field

CITE THIS PAPER

XinTong Wang, JianSheng Zhang. Energy and magnetic field distribution characteristics of PM and JONSWAP Spectra. Multidisciplinary Journal of Engineering and Technology. 2025, 2(2): 6-16. DOI: https://doi.org/10.61784/mjet3031.

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