GGFSS70: GFZ

GGFSS70

Model that covers the period of 70 - 15 kyrs, that includes 3 geomagnetic excursions

The field lines of the geomagnetic field over the Laschamps excursion (41,000 years ago) from the GGFSS70 model. The field is non-dipolar and complex. Tool: pymagglobal, https://doi.org/10.5880/GFZ.2.3.2020.005 *(GFZ Potsdam)*

The GGFSS70 is a global geomagnetic field model covering the period 70,000 to 15,000 years ago. The model is based on nine selected sediment records from globally distributed sites. The dataset contains only high-quality paleomagnetic records, with high temporal resolution (sedimentation rate) and good independent age control. It covers three geomagnetic excursions: Norwegian-Greenland Sea (65,000 years ago), Laschamps (41,000), and Mono Lake/Auckland (34,000). The model exhibits a better temporal resolution than the GGF100k model that covers the past 100,000 years.

Citation

Panovska, S., Korte, M., Liu, J., & Nowaczyk, N. R. (2021). Global evolution and dynamics of the geomagnetic field in the 15-70 kyr period based on selected paleomagnetic sediment records. J. Geophys. Res. Solid Earth, 126, e2021JB022681. doi: 10.1029/2021JB022681

Downloads

https://earthref.org/ERDA/2472/ model coefficients and codes
https://earthref.org/ERDA/2471/ model animation