Open AccessDistribution analysis of errors due to relocation of geomagnetic data using the ‘Conversion via Pole’ (CVP) method: implications on archaeomagnetic data
Author(s) -
Casas Ll.,
Incoronato A.
Publication year - 2007
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.2007.03346.x
Subject(s) - earth's magnetic field , archaeomagnetic dating , geodesy , geology , relocation , geomagnetic secular variation , secular variation , geophysics , magnetic field , geomagnetic storm , computer science , physics , quantum mechanics , programming language
SUMMARY Secular variation ‘master’ curves are built up using geomagnetic historical observations or archaeomagnetic data from a limited area and their use is usually restricted to regions of around 1000 km radius. Relocation of data within this distance is a common practice to enable comparison of data, although the errors due to such process are rarely taken into account. A detailed analysis of the distribution of relocating geomagnetic data has been done using three popular sets of geomagnetic models (IGRF‐9, GUFM and CALS7K‐2). This study improves the error analysis of relocating geomagnetic directions made up to date and expands it to geomagnetic intensities. Maximum errors correlate with the non‐dipole to dipole field ratio. Archaeomagnetists could use this analysis to valuate the error introduced by reducing data.