2.2.9 spase://SMWG/Observatory/Ground/USGS United State Geological Survey USGA 2019-05-05T12:34:56Z The USGS Geomagnetism Program currently operates 14 magnetic observatories. Magnetometer data are collected at these facilities, and the data are then transmitted to Program headquarters in Golden Colorado. The geographic distribution of the Program’s observatories, shown below, has been determined by the need to monitor and study the geomagnetic field on a global scale, primarily for purposes of space-weather diagnosis and main field modelling and mapping, as well as the practical issues of availability of land, communication and operational logistics, and the relative locations of observatories operated by other foreign-national programs. United State Geological Survey National Geomagnetism Program spase://SMWG/Person/Carol.A.K.Finn TeamLeader spase://SMWG/Person/James.M.Weygand MetadataContact Overview of the USGS Geomagnetism Program Array https://www.usgs.gov/natural-hazards/geomagnetism Description and location of the magnetometer array. Earth.Surface 1807-02-10T12:00:00Z Exact start date is unknown.