Diurnal wave of the ground level electric field of fair weather in mountains and its influence on the muon intensity

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Abstract

A diurnal wave of the ground level electric field of a non-standard type is regularly observed at the Carpet air shower array of the BNO INR RAS (43.3° N, 42.7° E), located in a mountain valley at an altitude of 1.7 km above sea level. In the period from July 29 to September 6, 2019, which included two magnetic storms, a change in the sign of the diurnal wave of the muon intensity with an energy of more than 100 MeV recorded by the array was observed. The diurnal behavior of pressure, temperature and ground level electric field did not change. Using the case of diurnal wave inversion, an estimate was made of the contribution of the regularly measured disturbance of the atmospheric electric field to the variations in muon intensity. During the study, previously unnoticed morning-evening variations of terrestrial origin were revealed.

About the authors

N. S Khaerdinov

Institute for Nuclear Research of the Russian Academy of Sciences

Email: khaerdinovns@yandex.ru
Moscow, Russia

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