TY JOUR TI Modeling of Pillar Magnetic Field Distribution at Magnetic Observatory KW magnetic anomaly field KW magnetic susceptibility KW soil magnetic properties KW simulation KW analytical model KW Kamchatka JO Russian Journal of Earth Sciences AU Гвоздарев, А.Ю. AU Хомутов, С.Ю. PY 2026 IS PB Геофизический центр Российской Академии Наук