Open AccessGeomagnetic secular variations during the last 25 000 years: an interpretation of data obtained from rapidly deposited sediments
Author(s) -
Creel Kenneth M.
Publication year - 1977
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1977.tb01288.x
Subject(s) - earth's magnetic field , secular variation , geology , declination , geomagnetic secular variation , magnetic declination , geophysics , oceanography , geomagnetic storm , magnetic field , physics , quantum mechanics , astronomy
Summary Secular variations of geomagnetic declination and inclination recorded by lacustrine and cave sediments from North‐west Europe, the Great Lakes region of North America and the Black Sea through the last 25 000 yr have a regional character and therefore cannot be attributed primarily to westward drift which is one of the main features associated with historic secular variations. A geomagnetic model in which the non‐dipole field originates from stationary oscillating or pulsating sources situated in the outer core is favoured and the origin of geomagnetic excursions is discussed.