Broadband File Format Guide

This page describes the format for the files used in Broadband Platform Simulations.

SImple Source Description (SRC File)

#
# Loma Prieta source file
#
MAGNITUDE = 6.94
FAULT_LENGTH = 40.0
FAULT_WIDTH = 17.5
DEPTH_TO_TOP = 3.85
STRIKE = 128
RAKE = 145
DIP = 70
LAT_TOP_CENTER = 37.0789
LON_TOP_CENTER = -121.8410
HYPO_ALONG_STK = 0.0
HYPO_DOWN_DIP =  14.75
#
# Model specific parameters
#
DWID = 0.1
DLEN = 0.1
CORNER_FREQ = 0.15
#
# Alternative SEEDS create alternative .srf
#
SEED = 2379646

Station List (STL File)

#BBP Station List for EQID=118 (Loma Prieta)
#SLong    SLat     RSN   Rrup(km)  Vs30(m/s) LoPass_Freq(Hz) HiPass_Freq(Hz)
-121.803 37.050  8001-CLS   3.9   462 0.1866  111.1111
-122.010 37.172  8002-LGP   3.9   515 0.3012  111.1111
-121.991 37.202  8003-LEX   5.0  1070 0.0984  111.1111
-122.031 37.255  8004-STG   8.5   387 0.1422  111.1111
-122.009 37.262  8005-WVC   9.3   387 0.1263  111.1111
-121.572 36.973  8006-G01   9.6  1428 0.2584  111.1111
-121.568 36.973  8007-GIL  10.0   730 0.2732  111.1111
-121.984 37.047  8008-BRN  10.7   353 0.2611  111.1111
-121.569 37.009  8009-GOF  11.0   387 0.2268  111.1111
-121.536 36.987  8010-G03  12.8   350 0.1248  111.1111
-121.803 37.210  8011-SJTE  14.7   672 0.1085  111.1111
-121.995 36.972  8012-WAH  17.5   390 0.2174  111.1111
-121.484 37.026  8020-G06  18.3   663 0.3012  111.1111
-122.060 37.001  8016-LOB  18.4   714 0.2058  111.1111
-122.062 37.001  8014-UC2  18.5   714 0.4348  111.1111
-121.628 37.166  8021-ADL  20.3   489 0.1767  111.1111
-121.628 37.166  8022-AND  20.3   489 0.2674  111.1111
-121.550 37.118  8026-CYC  20.3   540 0.1639  111.1111
-121.434 37.033  8015-GMR  22.7   334 0.3077  111.1111
-121.397 36.848  8013-HSP  27.9   306 0.1439  111.1111
-121.446 36.765  8025-SGI  30.2   748 0.1263  111.1111
-122.210 37.420  8017-SLC  30.9   425 0.3077  111.1111
-121.642 36.671  8024-SJW  32.8   353 0.1277  111.1111
-122.258 37.429  8019-WDS  34.1   454 0.1222  111.1111
-121.395 36.753  8018-SG3  34.3   609 0.1263  111.1111
-121.807 37.452  8023-CLR  35.5   540 0.1453  111.1111
-122.308 37.512  8040-BES  44.1   628 0.2151  111.1111
-121.880 37.597  8032-SUF  47.6   401 0.1236  111.1111
-122.361 37.529  8028-XSP  48.4   782 0.3012  111.1111
-121.249 36.658  8036-BVW  51.0   331 0.1133  111.1111
-122.061 37.657  8030-A3E  52.5   517 0.3040  111.1111
-121.932 37.709  8037-DFS  58.8   353 0.1038  111.1111
-121.184 36.573  8027-BVF  61.7   353 0.3390  111.1111
-121.143 36.532  8038-BVR  67.5   304 0.1639  111.1111
-121.043 36.569  8033-BVU  71.4   390 0.2500  111.1111
-122.391 37.786  8029-RIN  74.1   873 0.2976  111.1111
-122.513 37.778  8031-CFH  78.7   782 0.2398  111.1111
-122.249 37.876  8034-BRK  79.2   609 0.2398  111.1111
-122.476 37.808  8035-GGB  79.8   653 0.2421  111.1111
-122.527 37.822  8039-PTB  83.5  1316 0.2941  111.1111

Time History (BBP File)

% --------------------------------------------------
% synthetic broadband seismogram (Mai&Olsen 2008)   
% N = 8 header lines
% site:  5017-A-GLP
% NPTS, DT:  10922 0.009372998029
%
% time(s)    NS (cm/s)      EW(cm/s)       UP (cm/s)
% --------------------------------------------------
  0.00000    0.00000E+00    0.00000E+00    0.00000E+00
  0.00937    0.00000E+00    0.00000E+00    0.00000E+00
  0.01875    0.00000E+00    0.00000E+00    0.00000E+00
  0.02812    0.00000E+00    0.00000E+00    0.00000E+00
  0.03749    0.00000E+00    0.00000E+00    0.00000E+00
…
  4.82709    0.13824E-01   -0.44237E-02   -0.41983E-02
  4.83647    0.64276E-01   -0.24146E-01   -0.31487E-01
  4.84584    0.10083E+00   -0.45090E-01   -0.74688E-01
  4.85521    0.93571E-01   -0.50971E-01   -0.10271E+00
  4.86459    0.74907E-01   -0.51622E-01   -0.12331E+00
  4.87396    0.55531E-01   -0.51775E-01   -0.14432E+00
…
102.32502    0.11583E+00    0.26702E-01    0.93545E-01
102.33439    0.11322E+00    0.26290E-01    0.92550E-01
102.34377    0.11017E+00    0.25777E-01    0.91201E-01
102.35314    0.10671E+00    0.25165E-01    0.89504E-01
102.36251    0.10283E+00    0.24455E-01    0.87463E-01