SuperDARN Radars – Introduction

Abstract

A common topic of the conference are issues related to physics and geophysics of natural systems generating fields of frequencies in the ULF (Ultra Low Frequency -0.003 to 3 Hz) range and ELF (Extremely Low Frequency -3 to 3000 Hz) range. In the range below 3 Hz, a typical geophysical division of the pulsation phenomena in the Pc1-Pc6 ranges was used. Currently, after the International Telecommunication Union (ITU) introduced a new division of frequency bands, there was chaos, because the former ELF range was divided into three ranges, and one of them is called a ULF range. The division currently used includes the following bands: ELF (Extremely Low Frequency -3 to 30 Hz), SLF (Super Low Frequency -30 to 300 Hz) and ULF (Ultra Low Frequency 300 to 3000 Hz).