Physics – Geophysics
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3722303t&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 22, CiteID L22303
Physics
Geophysics
History Of Geophysics: Geomagnetism And Paleomagnetism
Scientific paper
Recent compilations of archeomagnetic intensity data have shown the existence of outliers. Acknowledging this problem, we propose a new way of generating and studying the uniqueness of regional archeomagnetic master curves bypassing the need to assume a normal data error distribution. Our approach lessens the weight of outliers by applying an iteratively re-weighted least-squares method combined with a bootstrap algorithm. Given a particular set of archeomagnetic data associated with experimental and dating uncertainties, we produce an ensemble of curves that are designed to sample the conditional probability distribution of the ‘true’ master curve. Using this technique, we propose an archeointensity master curve with its probability density for the Middle East region that covers the past four millennia BC.
Gallet Yves
Thebault Erwan
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