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07654 TELLURIC HAZARD ASSESSMENT FOR NORTHERN PIPELINES

Product Number: 51300-07654-SG
ISBN: 07654 2007 CP
Author: P. Fernberg, L. Trichtchenko, D.H. Boteler, and L. McKee
Publication Date: 2007
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This paper presents a general approach to the assessment of telluric activity. Telluric currents observed in a pipeline are the result of three simultaneously operating factors: (1) variations of the Earth’s natural geomagnetic field, (2) conductivity of the underlying Earth and (3) pipeline electromagnetic properties and pipeline structure. The first two factors were combined to give an estimation of the telluric electric field that produces variations of the pipe-to-soil potentials in a pipeline. This geoelectric field then can be combined with a particular pipeline equivalent circuit model which gives the pipeline response to the telluric activity in an area.
This paper presents a general approach to the assessment of telluric activity. Telluric currents observed in a pipeline are the result of three simultaneously operating factors: (1) variations of the Earth’s natural geomagnetic field, (2) conductivity of the underlying Earth and (3) pipeline electromagnetic properties and pipeline structure. The first two factors were combined to give an estimation of the telluric electric field that produces variations of the pipe-to-soil potentials in a pipeline. This geoelectric field then can be combined with a particular pipeline equivalent circuit model which gives the pipeline response to the telluric activity in an area.
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