Hey Walter,<div>When we apply the stressBC to model the isostatic response of a thickened crust what is supporting the crustal root? Is there an elastic beam implementation in GALE that supports the thickened crust? Is it possible to strengthen what it is that is providing support?</div>
<div>Rob<br><br><div class="gmail_quote">On Thu, Mar 1, 2012 at 7:02 PM, Walter Landry <span dir="ltr"><<a href="mailto:walter@geodynamics.org">walter@geodynamics.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">Robert Gray <<a href="mailto:graywacke@gmail.com">graywacke@gmail.com</a>> wrote:<br>
> Hey Walter,<br>
> Thanks for the help.<br>
> I'm having trouble getting this input file going in Underworld.<br>
> Specifically, I don't know how to declare the equation to use for isostasy<br>
> in the .xml file and not get a segmentation fault when I run the script.<br>
> I've attached the .xml file that I've set up for the simulation. In this<br>
> model, which includes temperature effects, I've set the coefficient of<br>
> thermal expansion to zero for both materials (which have the same<br>
> densities) to ensure an accurate isostatic compensation. Again, thanks for<br>
> your help.<br>
<br>
</div>Underworld does not include an equation parser. You have to use a<br>
StandardConditionFunction instead. I think that you can use<br>
Velocity_SimpleShear to get the same effect. Their StressBC may or<br>
may not be correct. I fixed a few things for the latest Gale release.<br>
<br>
Cheers,<br>
Walter Landry<br>
</blockquote></div><br></div>