How Earth's magnetic field has weakened since 1900
Strength of the axial dipole component of Earth's magnetic field from 1900 to 2020.
1905
1910
1915
1920
1925
1930
1935
1940
1945
1950
1955
1960
1965
1970
1975
1980
1985
1990
1995
2000
2005
2010
2015
2020
29,600
29,800
30,000
30,200
30,400
30,600
30,800
31,000
31,200
31,400
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