[CIG-SHORT] heterogeneity of fault friction

[Charles Williams]

Dear Farrokh,

It’s a bit difficult to tell without more information.  PyLith thinks you aren’t providing a spatial database.  It would probably be helpful to use pylithinfo or trace down the tree of components/properties using —help-components and —help-properties.  Also, what version of PyLith are you using?

Cheers,
Charles




> On 19/03/2017, at 4:45 PM, Farrokh Sheibani <farrokh at mit.edu> wrote:
> 
> Dear Pylith developers,
> 
> I am trying to model nonuniform distribution of fault friction parameters. The cult constitutive modeling that I am using is Slip Weakening. I am receiving error. I attached the cfg file as well as friction spatial database file and also the error message.
> 
> I was wonderen if you would help me regarding this:
> 
> 
> Thank you so much in advance!
> 
> Best,
> 
> Farrokh Sheibani
> 
> 
> cfg File:
> 
> pylithapp.timedependent.interfaces]
> NF1=pylith.faults.FaultCohesiveDyn
> [pylithapp.timedependent.interfaces.NF1]
> id=100
> label = NF1
> quadrature.cell = pylith.feassemble.FIATSimplex
> quadrature.cell.dimension = 2
> quadrature.cell.quad_order =4
> #zero_tolerance = 1e-5
> 
> friction = pylith.friction.SlipWeakening
> #friction.label = Slip weakening
> 
> 
> #friction = pylith.friction.StaticFriction
> friction.label = Slip weakening
> friction.db_properties = spatialdata.spatialdb.SimpleDB
> friction.db_properties.label = Slip weakening
> friction.db_properties.filename = friction.spatialdb
> friction.db_properties.query_type = linear
> 
> 
> 
> Friction Database File:
> 
> 
> 
> 
> // -*- C++ -*- (tell Emacs to use C++ mode for syntax highlighting)
> //
> #SPATIAL.ascii 1
> SimpleDB {
>   num-values = 4 // number of friction components
> 
>   // names of the Slip Weakening components
>   value-names =  static-coefficient dynamic-coefficient slip-weakening-parameter cohesion
>   value-units =  none none m Pa// units
> 
>   num-locs = 2874// 
>   data-dim = 2
>   space-dim = 3
>   cs-data = cartesian {
>     to-meters = 1.0
>     space-dim = 3
>   }
> }
> // Columns are
> // (1) x coordinate (m)
> // (2) y coordinate (m)
> // (3) z coordinate (m)
> // (4) static-coefficient (none)
> // (5) dynamic-coefficient (none)
> // (6) slip-weakening-parameter (m)
> // (7) cohesion (Pa)
> 0.004356039    0.0004799379    0.008003221    0.66    0.5    0    1E-06    0
> 
> Error Message: 
> 
> Traceback (most recent call last):
>   File "/data1/farrokh/Pylith/bin/pylith", line 27, in <module>
>     start(applicationClass=PyLithApp)
>   File "/data1/farrokh/Pylith/lib/python2.7/site-packages/pythia-0.8.1.16-py2.7.egg/pyre/applications/__init__.py", line 41, in start
>     shell.run(**kwds)
>   File "/data1/farrokh/Pylith/lib/python2.7/site-packages/pythia-0.8.1.16-py2.7.egg/pyre/applications/Shell.py", line 125, in run
>     app.applyConfiguration(context)
>   File "/data1/farrokh/Pylith/lib/python2.7/site-packages/pythia-0.8.1.16-py2.7.egg/pyre/inventory/Configurable.py", line 84, in applyConfiguration
>     raise ValueError("%s\nBacktrace - Component %s" % (err.message, aliases))
> ValueError: Error while configuring spatial database reader (simpleioascii, iohandler):
> Filename for spatial database not specified.
> Backtrace - Component simpleioascii, iohandler
> Backtrace - Component simpledb, db_properties
> Backtrace - Component slipweakening, friction
> Backtrace - Component faultcohesivedyn, NF1
> Backtrace - Component interfaces
> Backtrace - Component timedependent, problem
> Backtrace - Component pylithapp
>  
> Farrokh Sheibani, PhD
> Postdoctoral Research Associate
> Department of Earth Atmospheric and Planetary Sciences; Earth Resources Laboratory
> Massachusetts Institute of Technology 
> 
> 
> 
> 
> 
> 
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Charles Williams I Geodynamic Modeler
GNS Science I Te Pῡ Ao
1 Fairway Drive, Avalon 5010, PO Box 30368, Lower Hutt 5040, New Zealand
Ph 0064-4-570-4566 I Mob 0064-22-350-7326 I Fax 0064-4-570-4600
http://www.gns.cri.nz/ <http://www.gns.cri.nz/> I Email: C.Williams at gns.cri.nz <mailto:your.email at gns.cri.nz>
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