GGF100k - Model that covers the past 100.000 years and it is the longest global reconstruction of the geomagnetic field
Geomagnetic field intensity at the Earth’s surface at present (2020) and 41,000 years ago from the GGF100k model. Both maps are plotted on the same colour scale. The field intensity during the Laschamps excursion is globally very low. (GFZ)
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GGF100k is a global geomagnetic field model covering the past 100,000 years. It is the first model that provides a global view of the geomagnetic field evolution over an extended period. The model is based on an extensive global dataset of over 100 sediment records, and volcanic data. The geomagnetic axial dipole moment exhibits a broad range of variations, with the lowest value during the Laschamps excursion (41,000 year ago). Other excursions appear in limited locations and are likely regional events.
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- is related to
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