Physics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pepi...43..307o&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 43, Issue 4, p. 307-315.
Physics
5
Scientific paper
A complete analytical solution for the induced electromagnetic fields in oil pipelines situated under ionospheric electrojet current sources is presented. The induced currents in the pipeline are derivable from the fields at the surface of a uniform Earth. The effects of the nature and period of the ionospheric inducing source, the conductivities of the Earth and the depth of burial on the induced electric and magnetic fields due to buried oil pipelines, have been studied using a numerical model. An infinitely long sheet current with finite width W and an infinitely long line current located at a height H = 100 km above the Earth's surface were used. A study of the numerical results shows that both the horizontal and vertical components of the magnetic fields, due to the buried pipelines, are characterized by all the parameters studied. The induced current in oil pipelines increases with the period of the source field while it decreases with increasing depth of burial and increasing conductivity of the Earth.
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