run_ps2ff

This program produces tables of Rjb-to-Repi or Rrup-to-Repi ratios and variances. Example configuration files are given in the ps2ff/config/ directory.

The parameters in the config file are:

  • NP – The number of processors (cores) to use. Minimum 1.

  • datadir – The directory into which the output files are written. If unspecified, it uses ./data.

  • rup_dim_model – String to select the magnitude scaling relationship.

    Currently supported values are:

    • WC94 – Wells, D. L., & Coppersmith, K. J. (1994). New empirical relationships among magnitude, rupture length, rupture width, rupture area, and surface displacement, Bulletin of the Seismological Society of America, 84(4), 974–1002.
    • S14 – Somerville, P. (2014). Scaling Relations between Seismic Moment and Rupture Area of Earthquakes in Stable Continental Regions, PEER Report 2014/14.
    • HB08 – Hanks, T. C. and Bakun, W. H. (2008). M-logA observations for recent large earthquakes, Bulletin of the Seismological Society of America, 98(1), 490–494.
    • Sea10_interface – Interface coefficients of Strasser, F. O., Arango, M. C., & Bommer, J. J. (2010). Scaling of the source dimensions of interface and intraslab subduction-zone earthquakes with moment magnitude, Seismological Research Letters, 81(6), 941–950.
    • Sea10_slab: Slab coefficients from the paper in previous bullet.

  • mech – The rupture mechanism, only used by some scaling relationships:

    • A – all/unknown mechanisms,
    • SS – strike-slip,
    • N – normal,
    • R – reverse.

  • LW – Boolean for whether to separately select rupture length and width distributions, otherwise select the rupture area and compute length and width from it and an assumed aspect ratio.

  • AR – Aspect ratio (Length/Width) of the rupture. The aspect ratio is maintained until the rupture width spans the seismogenic zone, after which only the rupture length will increase.

  • min_seis_depth – The minimum seismogenic depth (km).

  • max_seis_depth – The maximum seismogenic depth (km).

  • mindip_deg – The minimum rupture dip in degrees (0 min, 90 max).

  • maxdip_deg – The maximum rupture dip in degrees (0 min 90 max).

  • ndip – The number of integration steps in dip.

  • ntheta – The number of integration steps in theta.

  • nxny – The number of integration steps in x and y (minimum is 2).

  • trunc – For the integration in area (or length and width), this is the truncation of the normal distribution (in standard deviation units).

  • neps – The number of integration steps for area (or length and width) from –trunc to +trunc. Larger numbers increase the accuracy of the result, but take longer to run.

  • minmag – The minimum magnitude for which to compute results.

  • maxmag – The maximum magnitude for which to compute results.

  • dmag – The size of the steps from minmag to maxmag.

  • minepi – The minimum epicentral distance for which to compute results.

  • maxepi – The maximum epicentral distance for which to compute results.

  • nepi – The number of steps from minepi to max epi. The steps will be

    uniformly sized in log space.

  • nz – The number of integration steps in depth for Ztor. For any given rupture width and dip in the integration, Ztor ranges from (max_seis_depth - width * sin(dip)) to min_seis_depth. Only used for for Rrup calculations.

usage: run_ps2ff [-h] -w {rjb,rrup} [-v] config_file

Positional Arguments

config_file The configuration file.

named arguments

-w, --what

Possible choices: rjb, rrup

(required) select the distance measure to calculate

-v, --verbose print informational messages