Title:
Raw Data: A three-dimensional hybrid finite element -- spectral boundary integral method for modeling earthquakes in complex unbounded domains -- Part 3

Authors:
Gabriele Albertini, Ahmed E. Elbanna, David S. Kammer

Date:
2021/08/20

Description:
The numerical simulations model earthquake ruptures using a hybrid finite element -- spectral boundary integral method.
We validate the developed method by means of a benchmark problem. Three more complex examples with a low velocity fault zone, low velocity off-fault inclusion, and interaction of multiple faults, respectively, demonstrate the capability of the hybrid scheme in solving problems of very large sizes.


Part:
This is part 3. It includes simulation of a Low Velocity Fault Zone (LVFZ) problem solved with the hybrid method with virtual strip height 1600m. This data is shown in Fig. 7, 8, 9 of Albertini et al., (IJNME, 2021).

Data and File Format:
Simulations are identified by their name refered to as the 'simid'. Each simulation contains various input files which contain the parameters for the simulation (file extension .in.txt). Simulation output are stored in HDF5 (file extension .h5). Each field is saved as a single HDF5 file. The file name corresponds to the field name. If the field name ends with an integer, it indicates the vector component (0=x, 1=y, 2=z). Typically, each dataset is of two dimensions with [t,n] where t is dumpstep and n is a discrete point (e.g. node). The time of the dumpsteps can be accessed in the time field at [t,0]. The x coordinate of a node n can be accessed in the coord_0 field with [0,n]. The output were written from Python using h5py.

Simulations:
LVFZ example solved with hybrid method with virtual strip height 1600m (Fig. 7,8,9):
#simids    LVFZ_dyn_N900_Ht800.0_fctx1.5_fctz1.5_Hh800.0_sigi0_InfB1

References:

Albertini, G., Elbanna A.E., Kammer, D.S. (2021). "A three-dimensional hybrid finite element -- spectral boundary integral method for modeling earthquakes in complex unbounded domains." International Journal for Numerical Methods in Engineering.