Geomagnetic fields generate electric currents, located in many different parts of the Earth. In the outer core a naturally occurring dynamo sustains the main part of the geomagnetic field. The USGS Geomagnetism Program has, for over a century, monitored the field through a network of magnetic observatories built in 1900 and conducted scientific analysis on those data. The Geomagnetic Observatories were created under the Divisions leadership of Drs. Louis A. Bauer and John A. Fleming. Observatories, support modern digital acquisition systems, that are designed to produce long time series of stable magnetometer data having high accuracy. The Program has an important and influential base of customers who rely on its data and data based products. The Program has numerous cooperative partnerships, and Program staff members. Website: "http://geomag.usgs.gov/" [Summary provided by the USGS.]
DOI/USGS/GD/NGP
USGS