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Federal
Voltages measured on long grounded electrically conducting lines in North American during several magnetic storms, 1891-1940
Department of the Interior —
Presented is a list of voltages (electric potential differences) measured during magnetic storms on grounded long lines in the United States and Canada between 1891... -
Federal
USGS Geomagnetism Program: Magnetic Disturbance Movies
Department of the Interior —
Movie-maps of low-latitude horizontal-intensity magnetic disturbance are derived from magnetic vector time series data collected at multiple ground-based...