Observation of Ionospheric Height Changes at Chumphon near the Magnetic Equator - R. Attaviriyasuwon; T. Boonchuk; N. Leelaruji; N. Hemmakorn (My University, 2006)
Keywords: Equinox; Ionogram; Longitude; Critical frequency; Magnetic dip; Anomaly (physics); Variation (astronomy); Universal Time; Ionosphere and magnetosphere dynamics