Effect of the electromagnetic environment in pipes in Yakutia

Abstract

The results of measurements of telluric currents flowing through pipelines laid in the cryolithozone in Yakutia are presented during geomagnetic storms and lightning discharges occurring in the 10 km zone around the pipeline. The currents reach tens of amperes. Construction of a lightning density distribution map. The effect of a direct current flowing in a 150 m long pipeline with a diameter of 110 mm laid in permafrost on the change in the pipe-to-ground potential is measured. Based on the analysis of variations in the horizontal component of the magnetic activity in the current 24th cycle of solar activity, it is established that the frequency of occurrence of a certain level of the rate of change in geomagnetic activity can be expressed by a power law with an order of magnitude of about two at low values. The exponent decreases to unity as the geomagnetic activity increases. The probability of occurrence of time intervals with given threshold values of the rate of change of geomagnetic activity is determined.