Table 1 Summary of IGRF generations, validity periods, release years, and references
From: International Geomagnetic Reference Field: the thirteenth generation
Full name | Short name | Validity period | Definitive period | Release year | Reference |
|---|---|---|---|---|---|
IGRF 13th generation | IGRF-13 | 1900.0 to 2025.0 | 1945.0 to 2015.0 | 2019 | This article |
IGRF 12th generation | IGRF-12 | 1900.0 to 2020.0 | 1945.0 to 2010.0 | 2014 | Thébault et al. (2015) |
IGRF 11th generation | IGRF-11 | 1900.0 to 2015.0 | 1945.0 to 2005.0 | 2009 | Finlay et al. (2010a) |
IGRF 10th generation | IGRF-10 | 1900.0 to 2010.0 | 1945.0 to 2000.0 | 2004 | |
IGRF 9th generation | IGRF-9 | 1900.0 to 2005.0 | 1945.0 to 2000.0 | 2003 | Macmillan et al. (2003) |
IGRF 8th generation | IGRF-8 | 1900.0 to 2005.0 | 1945.0 to 1990.0 | 1999 | Mandea and Macmillan (2000) |
IGRF 7th generation | IGRF-7 | 1900.0 to 2000.0 | 1945.0 to 1990.0 | 1995 | Barton (1997) |
IGRF 6th generation | IGRF-6 | 1945.0 to 1995.0 | 1945.0 to 1985.0 | 1991 | Langel (1992) |
IGRF 5th generation | IGRF-5 | 1945.0 to 1990.0 | 1945.0 to 1980.0 | 1987 | |
IGRF 4th generation | IGRF-4 | 1945.0 to 1990.0 | 1965.0 to 1980.0 | 1985 | Barraclough (1987) |
IGRF 3rd generation | IGRF-3 | 1965.0 to 1985.0 | 1965.0 to 1975.0 | 1981 | Peddie (1982) |
IGRF 2nd generation | IGRF-2 | 1955.0 to 1980.0 | - | 1975 | IAGA Division I Study Group (1975) |
IGRF 1st generation | IGRF-1 | 1955.0 to 1975.0 | - | 1968 |