TY JOUR TI Coherence time scales of long-period ULF variations of magnetic field in vicinity of the night-side magnetopause KW Pc5-6/Pi3 geomagnetic pulsations KW magnetotail KW magnetopause KW magnetosheath KW coherence JO Solar-Terrestrial Physics AU Stukov, D.A. AU Yagova, N.V. PY 2025 IS 11 PB Institute of Solar-Terrestrial Physics SB RAS