Magnetic fields over active tectonic zones in ocean
Journal of Geodynamics
By: Yu. A. Kopytenko, P.M. Serebrianaya, L.V. Nikitina, and A.W. Green
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Abstract
The aim of our work is to estimate the electromagnetic effects that can be detected in the submarine zones with hydrothermal activity. It is known that meso-scale flows appear in the regions over underwater volcanoes or hot rocks. Their origin is connected with heat flux and hot jets released from underwater volcanoes or faults in a sea bottom. Values of mean velocities and turbulent velocities in plumes were estimated. Quasiconstant magnetic fields induced by a hot jet and a vortex over a plume top are about 1-40 nT. Variable magnetic fields are about 0.1-1 nT. These magnetic disturbances in the sea medium create an additional natural electromagnetic background that must be considered when making detailed magnetic surveys. ?? 2002 Elsevier Science Ltd. All rights reserved.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Magnetic fields over active tectonic zones in ocean |
| Series title | Journal of Geodynamics |
| DOI | 10.1016/S0264-3707(02)00012-1 |
| Volume | 33 |
| Issue | 4-5 |
| Year Published | 2002 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Geologic Hazards Science Center |
| Description | 8 p. |
| First page | 489 |
| Last page | 496 |
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