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Catching the wave: ULF research in the U.S. since 1991
Author(s) -
Engebretson Mark J.
Publication year - 1995
Publication title -
reviews of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 8.087
H-Index - 156
eISSN - 1944-9208
pISSN - 8755-1209
DOI - 10.1029/95rg00441
Subject(s) - geophysics , ionosphere , solar wind , earth's magnetic field , crust , geology , magnetosphere , mantle (geology) , physics , plasma , magnetic field , quantum mechanics
Variations in the ultra‐low frequency (ULF) range, with periods from 0.1 to 600 seconds, were noted in the Earth's magnetic field long before they were understood to be indicators of plasma processes in the Earth's space environment. They are now also recognized as a significant means of dissipating solar wind and/or magnetospheric energy and as a primary means of coupling magnetospheric and ionospheric processes. ULF waves also constitute the source field for electromagnetic induction studies of the structure and motions of conductive bodies in the Earth. Knowledge of the spatial and temporal variation of these waves thus can aid in our understanding of properties of both Earth's external plasma environment and its underlying oceans, crust, and mantle.

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