Definitive Data
Definitive data, consisting of one-minute, hourly-mean, daily-mean values, and K-indices, from USGS observatories from the year 1985 onwards are available on CD. Starting from the year 1991, all Intermagnet definitive data, including USGS data, began to be published on a yearly schedule on CD. The most recent definitive-data CD becomes available within a year of the end of the previous calendar year. Each CD comes with browsing DOS software for viewing the data graphically and numerically.
Contacts
For requests for Intermagnet CDs:
Benoit Heumez
Intermagnet (Outside USGS)
intermagnet@ipgp.fr
For general enquiries about USGS Geomagnetism Program data, including specialized requests for USGS data:
Duff C Stewart
Data Management: Software Developer
dcstewart@usgs.gov
