Distribution analysis of errors due to relocation of geomagnetic data using the 'Conversion via Pole' (CVP) method: Implications on archaeomagnetic data

Lluis Casas, A. Incoronato

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50 Citations (Scopus)

Abstract

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. © 2007 The Authors Journal compilation © 2007 RAS.
Original languageEnglish
Pages (from-to)448-454
JournalGeophysical Journal International
Volume169
DOIs
Publication statusPublished - 1 May 2007

Keywords

  • Archaeomagnetism
  • Geomagnetism
  • Magnetic dating

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