The National Geophysical Data Center (NGDC) holds an extensive database of aeromagnetic survey data (1700 surveys worldwide) from various sources. All of this data is available directly from NGDC. At this time there are Aeromagnetic Survey CD/DVD sets for several databases, including the Project Magnet Database collected by Naval Oceanographic Office, Minnesota Aeromagnetics, and the Former Soviet Union Gridded Database.
NGDC's Aeromagnetic Survey Database is searchable with the GEODAS software. The aeromagnetic data records are not available directly using the GEODAS. Each ASCII documentation header file contains 24 80-character records, each containing survey documentation in specific fields. The ARO88 Headers are formatted in the ARO88 Header Exchange Format. The data records are not in a common format, rather they have retained the format in which they were submitted to NGDC. For more information on obtaining these data, please contact NGDC.