Open AccessEarth's magnetic field in the early 19th century from French sources
Author(s) -
Jackson Andrew,
Jonkers Art R. T.,
Mandea Mioara,
Murray Anne
Publication year - 2003
Publication title -
geochemistry, geophysics, geosystems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.928
H-Index - 136
ISSN - 1525-2027
DOI - 10.1029/2002gc000494
Subject(s) - earth's magnetic field , geology , declination , geophysics , data set , extant taxon , geodesy , mantle (geology) , hydrography , magnetic field , oceanography , astronomy , physics , mathematics , quantum mechanics , statistics , evolutionary biology , biology
We present both a description of a new magnetic data set covering predominantly the 18th and 19th centuries and the results derived from it for the small window 1820–1850, from which the bulk of the data originate. The data set comprises measurements of declination taken overwhelmingly on French naval and hydrographic vessels. A list of the vessels is given for one of the data sets. When augmented by extant inclination measurements, the data are capable of resolving the magnetic field at the core‐mantle boundary to a high degree of fidelity and thus are a valuable addition to the data set of historical geomagnetic measurements.