... levels of telluric activity and their rate of occurrences (number of days in the year). The results of the study are universal and can be applied for different pipeline configurations to estimate effectiveness of the cathodic protection. Telluric currents geomagnetic induction cathodic protection...

... activity in the area of investigation. Using results from the assessment of telluric electric fields as an input into the pipeline model, the effects can be interpreted in terms of telluric variations in pipe-to-soil potential. Telluric currents geomagnetic induction cathodic protection INTRODUCTION...

... orders of magnitude), the electric field is reduced at the pipeline depth (4 m) by a factor of three. This result applies for AC-induction as well as for natural geomagnetic induction. This effect should be taken into account in evaluation of telluric currents in pipelines under sea water and for ac...

... a model of electromagnetic induction in a multi-layered cylinder, that includes the electromagnetic properties of each pipeline layer and surrounding media. This model is used to examine the electromagnetic response of different types of pipelines buried in soil. ac-induction geomagnetic induction...