FastIsostasy.jl
❄ Fast and friendly glacial isostatic adjustment on CPU and GPU.
FastIsostasy is a friendly and flexible model that regionally computes the glacial isostatic adjustment (GIA) with laterally-variable mantle viscosity and lithospheric thickness. It is mainly adressed to ice-sheet modellers who seek for (1) a good representation of solid-Earth mechanics at virtually zero computational cost, (2) an approximation of the sea-level equation and (3) ready-to-use inversion tools to calibrate the model parameters to data. The simple interface of FastIsostasy allows to flexibly solve GIA problems within few lines of code. It is fully open-source under MIT license and was succesfully benchmarked against analytical, 1D GIA and 3D GIA model solutions.
FastIsostasy relies on a hybrid Fourier/finite-difference collocation of the problem introduced in Cathles (1975) and solved in Lingle and Clark (1985), Bueler et al. (2007). Thanks to a simplification of the full problem from 3D to 2D space and the use of optimized software packages, running kiloyears of regional GIA with
Getting started
FastIsostasy.jl is a registered julia package. To install it, please run:
using Pkg
Pkg.add("FastIsostasy")
Example
The animation above depicts:
- The anomaly of ice thickness with respect to the Last Interglacial.
- The bedrock displacement resulting from it.
This computation is performed with