Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted. For more information, please see www.doi.gov/shutdown
The mission of the U.S.G.S's Geomagnetism Program is to monitor the Earth's magnetic field. In recent years, monitoring of the Earth's magnetic field has become important for mitigating the impacts of space weather. Magnetic storms, or periods of time when the field is unusually active, can adversely affect the infrastructure and activities of our modern, technology-based society.
In response to the rapidly evolving science of geomagnetism and the ever more stringent demands of the scientific community, Program staff are constantly upgrading and modernizing the observatory network. Geomagnetism is headquartered with the USGS Geologic Hazards Team in Golden, Colorado, which also includes staff supported by the Earthquake Hazards and Landslide Hazards Programs.
The mission of the U.S. Geological Survey's Geomagnetism Program is to monitor the Earth's magnetic field. Using ground-based observatories, the Program provides continuous records of magnetic field variations covering long timescales; disseminates magnetic data to various governmental, academic, and private institutions; and conducts research into the nature of geomagnetic variations.
For centuries, the compass has been used for orientation and navigation, with the north-seeking tendency of its magnetized needle responding to Earth's magnetic field. Magnetic maps and charts need to be updated every few years, an on-going project that requires the collection of magnetic data as the field is complicated in shape and changes over time.