Dear developers,
I have a question about calculating viscosity in ISSM.
I am in the process of changing the viscosity in the SSA method through the SquareIceShelf example to compare with COMSOL.
We know that when calculating viscosity, we need to find the effective strain rate.
I wonder how the initial effective strain rate is used when calculating the effective strain rate in ISSM.
Also, I wonder about the iteration process.
As a result of testing in COMSOL, the results have differences depending on the iteration method.
What iteration method is used in ISSM?
And where can I adjust the number of iterations?
I also wonder how to get the z-direction velocity in the SSA method.
And how s (surface elevation) term(driving force term) is calculated?
thanks,
Yi-jeong.