Hi all,
I was recently testing and running the benchmark of the thrust-belt wedge taper (Coulomb wedge, eg. Dahlen 1984) following the tutorial video on Youtube of Dr. Anne Glerum. Thanks for your detailed introduction, I could reproduce the benchmark by charm.
However, I was wondering whether the pore fluid pressure ratio stuff (e.g., Hubbert & Ruby 1959, Terzaghi’s principle) was included in our Drucker Prager plastic deformation criteria in ASPECT? I did not see that in the paper of Glerum et al., (2018) in SOLID EARTH.
I think this might be important because the geophysical community observed and assumed a high fluid pressure from both the plate interface (almost lithostatic) and the upper plate (between lithostatic and hydrostatic). This will significantly affect the evolution of the stress and our anticipation of the deformation pattern (fore-thrust and back-thrust) in a fold-and-thrust belt and the modeled taper angle of the subduction zone.
May I kindly ask, am I neglecting this stuff from the manual, or this is still under development?
Many thanks for your help and please have a nice day!
Cheers,
Yueyang