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Continuous geomagnetic field models for the past 7 millennia: 1. A new global data compilation
GeoForschungsZentrum Potsdam, Telegrafenberg, Potsdam, 14473 Germany
Institute of Geophysics and Planetary Physics, University of California, San Diego, USA
Institute for Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, California, 92093-0225, USA
GeoForschungsZentrum Potsdam, Telegrafenberg, Potsdam, 14473 Germany
GeoForschungsZentrum Potsdam, Potsdam, Germany
A global data set of archeomagnetic and paleomagnetic data covering the past 7000 years has been compiled. It consists of
16,085 results of inclination, 13,080 of declination, and 3188 of intensity for the time span 5000 BC to 1950 AD. Declination
and inclination data come partly from existing databases and partly from original literature. A new global compilation of
intensity data for the millennial scale is included. Data and dating uncertainties are discussed as we attempted to obtain
an internally coherent data set. The global distribution of the data is very inhomogeneous in both time and space. All the
data are compared to predictions from the previous 3000 year global model, CALS3K.1. This collection of data will be useful
for global secular variation studies and geomagnetic field modeling, although southern hemisphere data are still underrepresented.
In particular, we will use it in a further study to update and extend the existing global model, CALS3K.1. The huge increase
in data compared to the previous compilation will result in significant changes from current models. As we might have missed
some suitable data, we encourage the reader to notify us about any data that have not been included yet and might fit in,
as improving our global millennial scale models remains our aim for the future. The data files described in this paper are
available from the EarthRef Digital Archive (ERDA) at
Received 13 July 2004; accepted 24 November 2004; published 1 February 2005.
Citation: (2005), Continuous geomagnetic field models for the past 7 millennia: 1. A new global data compilation, Geochem. Geophys. Geosyst., 6, Q02H15, doi:10.1029/2004GC000800.
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