Sigsbee2 Models |
Table 4 shows the contents of the sigsbee/model2b/SConstruct script. This file is quite similar to the one found in the Sigsbee 2A section and contains a list of rules that fetch the datasets and plot them.
from rsf.proj import * ####################################### # Sigsbee 2B velocity model construct # ####################################### PRFX = 'sigsbee2b_' SUFX = '.segy' for c in ('migration_velocity','stratigraphy','reflection_coefficients'): if(c=='migration_velocity'): v='vmig2B' o=3.055 d=.0143 s=.0003048 l='Migration Velocity' a='y' u='kms' if(c=='stratigraphy'): v='vstr2B' o=3.048 d=.00762 s=.0003048 l='Stratigraphic Velocity' a='y' u='kms' if(c=='reflection_coefficients'): v='reflectionCoefficients2B' o=3.048 d=.00762 s=1 l='Reflection Coefficients' a='n' u='' h = c + 'head' t = PRFX + c + SUFX Fetch(t,'sigsbee') Flow([v,h],t, ''' segyread tape=$SOURCE tfile=${TARGETS[1]} | put o1=0 d1=.00762 label1=Depth unit1=km o2=%f d2=%f label2=Distance unit2=km | scale rscale=%f ''' %(o,d,s) ,stdin=0) Result(v,v,'''grey color=i scalebar=y allpos=%s screenratio=.375 screenht=3 wheretitle=t title=%s labelsz=4 titlesz=6 barlabel=%s''' % (a,l,u)) End() |
Typing Command 2 within the sigsbee/model2B directory runs the script.
A plot of the migrated velocity model is shown below Figure 2b while the stratigraphic model can be seen in Figure 2a. A plot of the reflection coefficients are shown in Figure 2c.
vstr2B,vmig2B,reflectionCoefficients2B
Figure 2. Sigsbee 2B contains two velocity models, a stratigraphic model (a) and a migrated model(b). The resulting reflection coefficients are shown in (c). |
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Sigsbee2 Models |