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Three-Dimensional Ocean Wave Motion-Induced Electromagnetic Fields and Seafloor Measurements
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DOI：10.1109/joe.2026.3693814.png)
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Abstract
En 中文
The theory of electromagnetic (EM) fields induced by ocean wave motion (OWEM) has been mainly 2-D since the 1960s. This restricts the development of marine EM detection technology. In this article, we begin with the complete Maxwell partial differential equations, derive the expressions for the 3-D OWEM fields under the horizontal <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">N</i>-layered model, and compile the program (fOWEMF-3D). We verified the correctness of our algorithm’s response by comparing it with previous classic algorithms. Furthermore, we conducted a marine EM survey in a shallow seawater area. A horizontally layered geoelectric model closely resembling a real situation was constructed based on the conductivity data from seafloor drilling. The 3-D OWEM response was calculated using surface wave height data measured by a seafloor sensor and ocean wave propagation direction data from European Centre for Medium-Range Weather Forecasts (ECMWF), and compared with ocean bottom EM (OBEM) data that is least disturbed by vibration EM interference, thereby verifying the effectiveness of the algorithm. Ultimately, the OWEM field algorithm was successfully extended from 2-D to 3-D. The solution to this problem has implications for OWEM noise suppression, the inversion of kinematic parameters using OEWM data, and other applications.
Keywords:
Electromagnetic (EM) fields induced by the ocean wave motion (OWEM)
horizontally layered geoelectric model
marine electromagnetic (EM) survey
three-dimensional (3-D)
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