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![]() | Sigsbee2 Models | ![]() |
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A SConsctuct script found at sigsbee/data2B/fs/ is presented in Table 8. This script translates the segy source data file and converts it into rsf format.
######################### # Sigsbee 2B Shot Data # ######################### from rsf.proj import * #---- Define Variables and Filenames ---# data = 'sigsbee2b_nfs.segy' #------- Import Data ----------# #- Uses ftp program Fetch Fetch(data ,'sigsbee') #----- Convert Data ----------# Flow('zdata tzdata ./dhead ./bdhead',data, ''' segyread tape=$SOURCE tfile=${TARGETS[1]} hfile=${TARGETS[2]} bfile=${TARGETS[3]} ''',stdin=0) # create sraw(t,o,s): o=full offset, s=shot position, t=time Flow('ss','tzdata','dd type=float | headermath output="10925+fldr*150" | window') Flow('oo','tzdata','dd type=float | headermath output="offset" | window') Flow('si','ss','math output=input/150') Flow('oi','oo','math output=input/75') Flow('os','oi si','cat axis=2 space=n ${SOURCES[1]} | transp | dd type=int') Flow('sraw','zdata os', ''' intbin head=${SOURCES[1]} xkey=0 ykey=1 ''') Flow('shotNfs2B','sraw', ''' put label1=Time unit1=s d2=.02286 o3=0 label2=Offset unit2=km d3=.04572 o3=3.330 label3=Shot-coord unit3=km | mutter half=false t0=1.0 v0=6000 ''') #-------- Plot Data --------# Result('zero2Bnfs','shotNfs2B','''window $SOURCE min2=0 max2=0 size2=1 | grey pclip=98 color=I screenratio=1.5 gainpanel=a label2=Position label1=Time title= label3= unit2=km unit1=s labelsz=3''') Result('shot702Bnfs','shotNfs2B','''window $SOURCE n3=1 f3=70 | grey pclip=99 color=I gainpanel=a wantframenum=y unit1=s label1=Time label2=Offset unit2=km label3=Shot unit3=km title= screenratio=1.35 labelsz=3''') End() |
Similar plots are produced for this model. Figure 7 shows an image of shot number 70 taken at 6.5 km into the model. Figure 8 displays the zero offset data acquired on this model.
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shot702Bnfs
Figure 7. Shot 70 performed in Sigsbee 2B NFS model. |
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zero2Bnfs
Figure 8. Sigsbee 2B reflecting surface zero offset data, notice the decreased multiples from the free surface model |
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![]() | Sigsbee2 Models | ![]() |
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