NAICE model

If you have questions, email Evan Gowan: evangowan@gmail.com

If you use this model, please cite the summary paper:

Gowan, E.J., Tregoning, P., Purcell, A., Montillet, J.-P., and McClusky, S., 2016. A model of the western Laurentide Ice Sheet, using observations of glacial isostatic adjustment. Quaternary Science Reviews, accepted for publication.


Disclaimer: This model has only been checked against GIA constraints in western Canada. There are likely to be misfits elsewhere. In particular, I think that there is too much ice in Atlantic Canada. If I get the time, I hope to look into other regions.

This model was built with the following Earth model parameters:

Lithosphere: 120 km
Upper Mantle (< 670 km depth): 4x10^20 Pa s
Lower Mantle (> 670 km depth): 10^22 Pa s

The paleotopography files were computed using this structure.

If you need paleotopography at a higher resolution, feel free to email me and I can calculate it for you.

The configurations prior to 30,000 yr BP are pretty much an educated guess based on scattered radiocarbon dates (after 50,000 yr BP), and the ice flow patterns inferred by Johan Kleman. There is more information in my PHD thesis, which should be available on the Australian National University library website in July 2016 (or you can ask me for a copy).

Evan Gowan, March 3, 2016
