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babs.c rectify seismic traces
bagc.c automatic gain control of traces (scale in time and space)
ba2s.c FORMAT CONVERSION: ASCII TEXT ---> BSEGY (no geometry setting)
bamp.F90 amplitude analysis by frequency (K-V Solid)Downhole Sph. Div.
bamx.F90 amplitude analysis by frequency (K-V Solid)SurfaceWaves Cyl.Div
bbal.c balances two data sets to have same MAV (mean absolute value)
bcad.f plot seismic traces as CAD (*.dxf; digital exchange file)
bcar.c apply moving average (box car) filter as function of time
bcnv.c FORMAT CONVERSION: BSEGY <---> SEG-Y (BSU=*.seg, SEG-Y=*.sgy)
bcrd.f coordinate rotation and translation, BSEGY geometry headers
bdat.c datuming program for refraction data (easier for picking)
bdcn.f deconvolution (profile or trace mode), prediction or error out
bdif.f differentiates w.r.t. time using Bilinear Transform method
bdum.f generate dummy data set with user defined impulse position
bdump.f generate a dump of selected BSEGY header values
bedt.f edit BSEGY seismic file (traces, time, sample interval, etc.)
bequ.c trace equalize data by L2 norm or Maximum Absolute Value
bext.c extract traces from a merged data set based on header values
bfil.f ARMA FILTER of seismic traces (low-, band-, or high-pass)
bfit.f Solves for interval velocity from times in headers (VSP)
bftr.f FILTER traces with other *.seg traces, or namelist from bdump
bfxt.f F-X Transform of seismic traces
bgar.c exponential GAIN recovery, by range specification
bgaz.c exponential GAIN recovery, by depth specification
bhed.f up/down load selected header information from/to a text file
bhelp.c this listing of BSU package contents
bhod.F90 hodogram by PCA to determine down-hole tool orientation
bint.f numerical integration of seismic traces (trapezoidal rule)
bis2seg.c FORMAT CONVERSION: BISON ---> BSEGY (no geometry setting)
bkil.f either kill (delete) or zero seismic traces
bmed.f median mix of seismic traces (spatial)
bmix.f mean mix of seismic traces (spatial)
bmrg.f merge traces from many files to a single file
bmrk.f mark first break picks with a delta function on waveform
bmst.f MASTER illustrates programing in BSU, FORTRAN
bnez.c GEOMETRY: Create survey *.nez (Northing,Easting,Elevation) file
bnfd.c MODELING: computes near and far field in elastic whole space
bnos.f MODELING: generate band-limited random noise traces
boff.c computed source to receiver offset and add to headers
bpic.f automatic first break picker, or inserts picks from a file
bplt.c plot seismic traces X11|PS|XFIG|JPEG|PDF formats wt,va,blk/gry
brdc.f remove DC bias from traces
bred.f apply linear or hyperbolic correction in time to traces
bref.f delay time refraction analysis setup
brev.f reverse either channel order or sample polarity
brot.f rotate seismic traces (3-component data)
brpt.c remove pretrigger (updates header and static shift data)
brsp.f resample data in time (augmentation with zeros in freq domain)
bscl.f scale data set with user provided, or data derived factor
bsdc.f show DC level in seismic traces as %MAV (mean absolute value)
bshf.f apply a static shift to seismic traces (shift in time)
bshp.f Wiener least squares shaping filter
bsrt.c sorts traces by offset
bstk.f stacks traces in a gather (number traces out=number in)
bsum.c weighted sum of two data sets: file_out = file1 + C*file2
bswp.c byte swap a BSEGY or SU data set (toggle endian)
btor.f applies geophone orientations to trace headers (from PCA)
bvas.F90 measures body wave velocity dispersion (Kelvin-Voigt solid)
caplot.F90 PostScript plots of combined bvas and bamp runs
bvax.F90 measures velocity dispersion on surface data
bvel.f apply correctional velocity (linear with range) Down-Hole
bvsp.f down-hole travel time inversion with ray bending
bwht.f non-linear whitening program (agc applied to bank of filters)
bwin.f window the data aperture with raised cosine tapers
bxcr.f cross (or auto) correlation, output to BSEGY data set
tplt.c plot a single trace, pipes to GNUPLOT and writes gnuplot file
qplt.c plot all traces (scaled by max abs) pipe to GNUPLOT and write
a gnuplot file (qgraph.gp)
gendis.f helper program to build namelist file for program disper.f
disper.f computes dispersion curves for Rayleigh waves (see also waves)
showmdl.f show model in disper.d file
genwav.F90 Helper program to build namelist file for program waves.f
waves.F90 computes synthetic Rayleigh wave only seismograms (see disper)
cmst.c MASTER illustrates programing in BSU, C-LANGUAGE
egg2seg.c FORMAT CONVERSION: EEG's SEG-2 ---> BSEGY (no geometry)
seg2txt.f FORMAT CONVERSION: BSEGY ----> ASCII (Octave/Matlab)
seg2csv.c FORMAT CONVERSION: BSEGY ----> CSV (comma separated value)
CSV files can be input into spread sheets
seg2dump.c RAW DUMP of SEG-2 data file to text listing.
genb2s.f BASH SCRIPT GENERATOR: sets up a block of bis2seg runs
genbhod.f BASH SCRIPT GENERATOR: sets up for PCA analysis s-wave source
genbhodV.f BASH SCRIPT GENERATOR: sets up for PCA analysis vert. source
genbrot.f BASH SCRIPT GENERATOR: sets up for run of brot on many files
genref.f BASH SCRIPT GENERATOR: for geometry setting on pattern, CDP
gensetg.c generates control files for geometry setting, setgeom program
genvsp.f BASH SCRIPT GENERATOR: setting geometry for down-hole surveys
halfsp.f computes motion-stress vectors and velocity of Rayleigh wave
lamb.c MODELING: computes solution to Lamb's problem (Vp/Vs=sqrt(3))
picrestore.f Restore suxpicker picks on data reduced by bred.f
setgeom.c Sets geometry for reciprocal refraction shooting (see gensetg)
genwaw.c Interactive, Set geometry and convert SEG-2---->BSEGY
(genwaw good use is for walk-away shooting)
top2dxf.f FORMAT CONVERSION: Survey NEZ (*.nez) ---> CAD (*.dxf)
top2nez.f FORMAT CONVERSION: RAW TOPCON ---> Survey NEZ (*.nez)
topbcrd.f apply coordinate translation and rotation to Survey NEZ (*.nez)
topcon.f combines NEZ with BISON file --->*.xyz file Run bhed on *.xyz
topcon2.c combines NEZ with EGG SEG-2 ---> BSEGY with geometry
traplt.f line printer style plots of samples and spectrum
C-FUNCTIONS:
bargrid.c draw a progress bar grid to screen (stdout)
c_boxit.c apply a running average (box car) filter to a signal
c_bsegin.c read a seismic trace in BSEGY format
c_bsegout.c write a seismic trace in BSEGY format
cr_labl.c write a copyright label to screen (stdout)
exbar.c draw progress bar to screen (stdout)
fcr_labl.c write a copyright label to a file
findxyz.c extract geophone and source coordinates from headers
fmax_min.c compute maximum and minimum value in a signal, and indexes
fnorm.c compute L2 norm of a signal
hlp_labl.c print a help label to screen (stdout)
in_chk.c scan a data set for number of traces, sample interval, etc.
lsqufit.c least squares fit, straight line function: y=mx + b
mav.c compute mean absolute value of a signal
names.c build file names from process ID
onepole.c perform a single pole (Z-plane) filter
xdrfloa.c IBM functions to convert between IEEE and IBM floats
FORTRAN SUBROUTINES:
agc.f apply Automatic Gain Control (AGC) on a signal
arma.f apply an Autoregressive Moving Average (ARMA) filter
bnoise.f compute band-limited random noise
boxit.f apply a running average (box car) filter to a signal
bsegin.f read a seismic trace in BSEGY format
bsegout.f write a seismic trace in BSEGY format
cfilt.f design a bank of band-pass digital filters
chktrc.f scan a data set for number of traces, sample interval, etc.
conv.f apply a selected filter out of bank designed by cfilt.f
conv2.f time domain convolution of two signals
cross.f E. A. Robinson's cross correlation subroutine
cshift.f shift traces in frequency domain by phase rotation
czero.f zero a complex signal
demult.f demultiplex a complex trace into real and imag. parts
dot.f E. A. Robinson's inner (dot) product between two vectors
drum.f E. A. Robinson's phase unwrapping subroutine (modified by pm)
eureka.f E. A. Robinson's solution by Levinson Recursion
findxyz.f extract geophone and source coordinates from headers
flist.f line printer style plot of a complex signal (spectrum)
fmed.f bubble sort on a vector, returns median value
fold.f E. A. Robinson's convolution subroutine
l2norm.f rescale a seismic signal by its L2 norm
nlogn.f E. A. Robinson's Fast Fourier Transform (Radix 2)
nrad2.f determines the first power of two larger than a given value
pltbar.f draw progress bar to screen (like bargrid.c and exbar.c)
polar.f E. A. Robinson's conversion from rectangular to polar form
rand.f CMLIB: generates uniform pseudo-random number
rect.f convert complex numbers from polar to rectangular form
runif.f CMLIB: calls rand.f to generate longer period random sequence
shape.f E. A. Robinson's least squares shaping filter
tlist.f line printer style plot of a signal (also lists values)
vshft.f shifts a signal by linear interpolation of samples
xcor.f cross correlates two signals
xcor1.f one sided autocorrelation of a signal
xmax.f find maximum and minimum values in a vector
C-INCLUDE FILES: Source Code Directory=bsu-3.0.0/src/C/include/
Installed Directory=/usr/local/include/bsu-3.0.0/
c_bsegy.h BSEGY header structure
sub4.h prototypes of library functions
FORTRAN INCLUDE FILES: Source Code Directory=bsu-3.0.0/src/Fort/include/
Installed Directory=/usr/local/include/
bsegy.inc BSEGY header declaration and equivalence statements
bsegy.f90 BSEGY header declaration and equivalence statements
OCTAVE/MATLAB CODES
Octave: Installed Directory=/usr/local/share/octave/site-m
bsegin.m Reads seismic traces in BSEGY format
bsegout.m Write seismic traces in BSEGY format
segyinfo.m Scan a BSEGY file
traplt.m Plot a signal from a BSEGY data set and its spectrum
segpic.m Pick first breaks using mouse on waveform
profplot.m Plot all traces in a file, simple waveform format
yulewalker.m Plot all pole spectrum of seismic trace or from an
autocorrelation signal as input.
DOWN HOLE SOFTWARE Octave/Matlab
hodoplot.m Plot hodogram (two channels in same file)
hodo2plot.m Plot hodogram (channels in two different *.seg files)
seisazi.m Plot header azimuth of receiver component
(intended for use prior to rotation to a constant az)
vfitw.m Least Squares fit to first break down-hole data
vplot.m Nice plot of vfitw.m results
cainv3.m Kelvin-Voigt inversion of down-hole (VSP) data
(requires bvas.his and bamp.his results)
caplot3.m Nice plot of cainv3.m results
cafwd3.m Forward modeling, Kelvin-Voigt computes dispersion
REFRACTION SOFTWARE Octave/Matlab
direct.m Direct wave analysis for overburden velocity
delaytm.m Delay time analysis of refraction data conventional
delaytmR.m Delay time analysis of refraction data reciprocal
refplot.m First break analysis (apparent velocity, intercept)
SURFACE WAVE SOFTWARE Octave/Matlab
rayleigh.m Example on how to dynamically link rwv.f for dispersion
curve computation in Octave environment.
moho.m Example similar to rayleigh.m, but plots dispersion
as a function of period.
FwdR1.m Forward problem, Rayleigh wave given bvax results to
compare to. model.txt is a file with 3 rows
describing the soil profile. Example (nlay=3)
nlay
v1 v2 v3
z1 z2 z3
invR1.m Inverts a dispersion curve from bvax results (bvax.his)
Truncated Singular Value method employed.
Starting model in model.txt as in FwdR1.m above.
SASW.m Spectral Analysis of Surface Waves
Data= two time domain signals from a *.seg BSEGY data
set. Computes required cross-spectra and coherence
saswv.m Spectral Analysis of Surface Waves
Data= Cross-Power Spectrum and Coherence, text file
dx32f.txt sample data from NGES, Texas A&M Georisk 2011
Dispcurve.m Example program computes dispersion from spectral record
Data= Frequency spectra recorded at many offsets
20mSourceOffset.mat sample data Christchurch New Zealand
GeoCongress 2014 ASCE meeting, see GSP 234-235
PseudoTime.m Example program computes time series from recorded
same frequency spectra data set as in Dispcurve.m above
kvKVMBscan.m Kelvin Voigt to KVMB damping ratio for frame:water mass
kdKVMBscan.m KV damping ratio vs hydraulic conductivity for porosity
fqKVMBscan.m KV damping ratio vs frequency for hydraulic conductivity
KD4kvmb.m Wave stiffness,damping + porosity solution hydraulic c.
SCRIPTS: Installed Directory=/usr/local/share/bsu/scripts
Example scripts which can be customized as needed.
xplot X11 Plot waveform data using BSU program bplt
psplot Postscript Plot wavform data using BSU program bplt
xPlot-su X11 Plot waveform data using Seismic Unix (SU required)
psPlot-su Postscript Plot wavform data using Seismic Unix
rename-btor Automated renaming of files after btor execution
mergeplots Concatonates group of Postscript files into a single PDF
Merge-all Script to process all combinations of VSP data
Merge2 VSP processing if load cell + 3 downhole + 3 ref. phones
Merge VSP processing to P-wave and SH-wave data sets
DOCUMENTATION: Installed Directory=/usr/local/share/doc/bsu
README
bsu-user-guide3-2.pdf (pdf user guide)
bsu-html.tar.gz (html user guide)
man-bsu3-html.zip (html man pages)