[CIG-LONG] Isostasy in GALE

Robert Gray graywacke at gmail.com
Tue Feb 28 12:34:08 PST 2012


Hello all,
I'm trying to model crustal scale collision where the bottom boundary
deflects downwards to reflect isostatic deflection due to a crustal root,
as would be done in MICROFEM.  That said, the entire crustal layer deflects
downwards way too much.  Has anyone tried modelling anything similar?
Instead of velocity BC's on the bottom boundary I've put:
 ,"stressBC":
        {
            "Type": "StressBC",
            "ForceVector": "mom_force",
            "wall": "bottom",
            "normal_value": "-9.81*3300.0*(0.036e6-y)"
        }
at the end of the components section.
Any help on the matter is greatly appreciated.
Cheers,
Rob
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