Geophysical Service was created in 1930.
ION Geophysical was created in 1968.
Western Geophysical was created in 1933.
Geophysical Research Letters was created in 1974.
Journal of Geophysical Research was created in 1896.
Canadian Geophysical Union was created in 1974.
Geophysical Journal International was created in 1922.
German Geophysical Society was created in 1922.
Geophysical Tomography Group was created in 1985.
American Geophysical Union was created in 1919.
TGS-NOPEC Geophysical Company was created in 1996.
Philippine atmospheric geophysical and astronomical service administration
ION Geophysical's population is 1,195.