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Detailed File Information
Global Archeomagnetic Field Model for the Past 7k Years: CALS7K.2
File Name cals7k.2.zip
Data Type movie, map, program source code
Computer Program Not specified
File Size 142.88 MB - 1 file
Expert Level State-of-the-art Science
Contributor Monika Korte
Source Korte & Constable 2005
Description
We present a continuous global geomagnetic field models for the recent millennia: CALS7K.2 covering 7000 years from 5000~BC to 1950~AD. The model was determined by regularized least squares inversion of archeo- and paleomagnetic data using spherical harmonics in space and cubic B-splines in time. While data accuracy and dating uncertainties remain limited, reliable low-resolution global models can be obtained. For the first time a significant amount of archeointensity data is used in this kind of global model, allowing the determination of evolution of the dipole strength.
Model coefficients, evaluation code, animations and snapshots plots for every 100 years are included.
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