EarthRef.org Digital Archive (ERDA) -- Holocene geomagnetic field model CALS10k.1b animations

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Detailed File Information

Holocene geomagnetic field model CALS10k.1b animations

File Name	cals10k1b.animations.zip
Data Type	animation
Computer Program	Not specified
File Size	31.62 MB - 1 file
Expert Level	State-of-the-art Science
Contributor	Monika Korte
Source	Korte et al. 2011 M. Korte, C. Constable, F. Donadini and R. Holme: Reconstructing the Holocene geomagnetic field, submitted to Earth and Planetary Science Letters
Resource Matrix	The Earth's Magnetic Field

Description
We present a continuous global geomagnetic field model for the past 10 millennia: CALS10k.1b, covering the time span from 8000 BC to 1990AD. 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. It is the average of 2000 models where data and ages where varied according to uncertainty estimates in a bootstrap approach. The model is considered to be a robust low resolution representation of Holocene field evolution.
Animations of field intensity evolution at the Earth's surface and of radial field at the core-mantle boundary are provided here.