Geometry of data

Raw Data /data/2d_synthetic/amoco-2.5d/shots.HH
Velocity Model /data/2d_synthetic/amoco-2.5d/velmodel.HH,velsmooth.HH,velsmoother.HH
Usage Migration test: Etgen and Regone (1998)
Geometry

shots.HH:
        in="stdin"
        expands to in="stdin"
        esize=4
        n1=384  n2=256  n3=385  n4=1               37847040 elem          151388160 bytes
        d1=0.0099       d2=0.025        d3=0.05 d4=1
        o1=0    o2=0    o3=0    o4=0
        label1=t (s)
        label2=h (km)
        label3=x\r-40 \s60 s\s100 \r40  (km)

Problem Migration test
History of Data Gift from BP Amoco (2000)
Proprietary Considerations If you use this data be sure to thank BP Amoco and reference John and Carl's abstract. I'd appreciate it if you could reference my 2.5D migration paper too (in which this dataset is also used):

Efficient two and one-half dimensional true-amplitude migration by Dellinger, Gray, Murphy, and Etgen (which hopefully should appear in GEOPHYSICS in the May/June 2000 issue).

Sam Gray says of this model:

This model is kind of bad because it seems to break everything, F-X, Kirchhoff, everything. I think Marmousi makes Carl's point much better than this model does.

Joe's reply to the question whether we can distribute this dataset to other people:

``Any of those 2D datasets you got from me you can do whatever you want with. Just thank BP Amoco for making it available if you publish or present something with it.''

(Figure5 is Sam's attempt at making a good image using this data.)

 

gather Figure 1 Raw Data

 

velmod
Figure 2 Velocity model

 

velsmooth
Figure 3 Two smoother versions of the velocity model

 

zero
Figure 4 Zero offset image

 

mig
Figure 5 Migration