EarthRef.org Digital Archive (ERDA)
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Detailed File Information
CALS7K.2 movies centered on longitude 0
File Name cals7k.2mov2.zip
Data Type movie
Computer Program Not specified
File Size 128.44 MB - 1 file
Expert Level State-of-the-art Science
Contributor Monika Korte
Source Korte & Constable 2005
Description
This archive contains movies from CALS7K.2 centered on longitude 0. With CALS7K.2 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.
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