EXPERIENCE OF USING HIGH-PRECISION MAGNETIC SURVEYING IN MARINE ENGINEERING AND ENVIRONMENTAL STUDIES

  • A. N. Ivanenko Shirshov Institute of Oceanology, Russian Academy of Sciences
  • Yu. V. Brusilovsky Shirshov Institute of Oceanology, Russian Academy of Sciences
  • I. A. Veklich Shirshov Institute of Oceanology, Russian Academy of Sciences
  • A. M. Gorodnitsky Shirshov Institute of Oceanology, Russian Academy of Sciences
DOI 10.29006/1564-2291.JOR-2025.53(1).2
Keywords marine magnetic survey, gradiometry, engineering and geological investigations, environmental monitoring, paleostructures

Abstract

The article summarizes the long-term experience of utilizing marine magnetic surveying in engineering, geological and ecological investigations conducted by the Laboratory of Geophysical Fields at the Shirshov Institute of Oceanology of the Russian Academy of Sciences from 2000 to 2020. High-precision magnetic surveying has been applied to address a wide range of practical tasks, including environmental monitoring of underwater wells, engineering and geological studies for the installation of drilling platforms and the construction of oil and gas pipelines, detection of anthropogenic debris, and monitoring surveys ensuring the safe operation of underwater trunk pipelines. It is demonstrated that the effectiveness of the method is achieved by adhering to specific survey methodology requirements. The presence of a highprecision navigation system, providing the necessary positioning accuracy, along with a dense network of orthogonal survey lines, reliably ensures the determination of the spatial location of decommissioned wellheads and the detection of anthropogenic objects. A key factor in enhancing the efficiency of geophysical surveys for mapping potentially hazardous geological structures is an integrated approach. The study examines the potential for combined use of magnetic surveying and high-resolution seismic exploration. This integration enables a more reliable characterization of paleostructures, tectonic faults, and other potentially hazardous geological formations. The qualitative evolution of hardware and software systems used at the Institute of Oceanology for applied magnetometric studies is demonstrated, along with the corresponding expansion of methodological capabilities.

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Published
2025-03-25
Issue
Vol 53 No 1 (2025): Journal of Oceanological Research
Section
Marine geology, geophysics and geochemistry

Transfer of copyrights occurs on the basis of a license agreement between the Author and Shirshov Institute of Oceanology, RAS

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