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, and older USGS CDs, all of which are free of charge:
Jill E Caldwell
Data Management: Data Processing
jcaldwell@usgs.gov
For general enquiries about USGS Geomagnetism Program data, including specialized requests for USGS data:
Duff C Stewart
Data Management: Software Developer
dcstewart@usgs.gov
