[CIG-SEISMO] MINEOS question

Martin van Driel vandriel at tomo.ig.erdw.ethz.ch
Fri Nov 4 07:27:04 PDT 2011


Hi Evan,

I am having the very same problem you posted to the CIG-SEISMO mailing 
list in October. Did you finally find a solution to this?

I am testing different models that I generate based on the software that 
I want to benchmark (AXISEM) and it seems that some models have less 
problems then others, but I don't see any systematics. As soon as I want 
to go to higher frequencies then 30mHz it seems to be more or less 
random whether it works or not.

The other thing I am worrying about in this context is the "raylquo" 
output in the output of minos brans: according to the manual it should 
be on the order of "eps", but there are always modes where it goes up to 
the order of 1, no matter what eps I choose as input.

Any hint would be apreciated,
Thanks,
Martin van Driel


 > Hello there,
 >
 > I am a student at Princeton working with Frederik Simons. We would
 > like to compute a full catalog of normal modes as alluded to in the
 > "Benchmark" section of the Mineos manual. That is nmin = 0, nmax =
 > 400, lmin = 0, lmax = 3000 from 0 Hz to .2 Hz. This is what the manual
 > says is done. However, after spending a week or so trying to get the
 > package to compute the modes, we are still unsuccessful. The problem
 > is that on various modes the code gets hung up.
 >
 > Is there a known strategy for computing a full mode catalog? Breaking
 > it up by n? by l? by frequency range?
 >
 > Also, how may we get access to the set of normal modes used in the
 > benchmarks section. This would be useful to do for
 > comparison. Unfortunately there are no error messages when the code
 > hangs indefinitely so we cannot diagnose the problem.
 >
 > It's possibly that you are not the person I am supposed to ask for
 > help but I hope, if not, you will lead me in the right direction.
 >
 > Thank You,
 > Evan Welch
 > (313) 303 9880


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