SEP passive seismic partial stack

Raw Data
Velocity Model
Partial Stack /data/oldq2/passive/stack.1.H, /data/oldq2/passive/stack.5.H, /data/oldq2/passive/stack.9.H, /data/oldq2/passive/stack.13.H, /data/oldq2/passive/stack.17.H, /data/oldq2/passive/stack.21.H, /data/oldq2/passive/stack.25.H, /data/oldq2/passive/stack.29.H, /data/oldq2/passive/stack.33.H, /data/oldq2/passive/stack.37.H, /data/oldq2/passive/stack.41.H, /data/oldq2/passive/stack.44.H, /data/oldq2/passive/stack.45.H, /data/oldq2/passive/stack.46.H, /data/oldq2/passive/stack.47.H, /data/oldq2/passive/stack.48.H,
Zero-offset Migration
Usage Passive seismic experiments: Nichols et al. (1989), Nichols (1989), Zhang (1989), Cole (1989a) Cole (1995) Imaging: Cole (1989b)
Geometry

In stack.1.H
stack.1.H:
        in="$Q2/passive/stack.1.B"
        expands to in="/q2/passive/stack.1.B"
        esize=1
        n1=800  n2=79   n3=10                632000 elem             632000 bytes
        d1=0.004        d2=38.1 d3=38.1
        o1=0    o2=0    o3=0

Problem
History of Data Raw two dimensional array data acquired by SEP in September of 1988 in a passive seismic experiment. Partial stacks of 15 records along four directions: inline, crossline, and two diagonal. As presented by Cole in Cole (1989b), the equations for stacking associated to the recorded 3-D data P(it,ix,iy) are:

$$P_1(it,ih)=\sum_{ix}{P(it,ix,ih+ix)}$$

$$P_2(it,ih)=\sum_{ix}{P(it,ix,ih-ix+nx)}$$

A README file in the data directory stays:

"The following lists gives the recording time of each record and some
additional information where relevant
1       7:43 PM         test record, many stations not working
5       3:50 AM
9       3:54 AM
13      3:58 AM
17      4:02 AM
21      4:06 AM
25      4:10 AM
29      4:14 AM
33      4:18 AM
37      4:22 AM
41      4:26 AM
44      11:00 AM        single 300 lb. charge detonated in quarry
45      11:27 AM
46      11:30 AM        1500 lbs. of explosives (quarry blast) detonated
47      11:45 AM        large plane passes over survey area
48      12:00 NOON      single 100 lb. charge detonated in quarry"

Preprocessing
Proprietary Considerations

 

pstack46
Figure 1 Partial stack data corresponding to record number 46. Note the blast arrival arround 9.7 seconds.

 

pstackw46
Figure 2 Window (time 8 sec to 16 sec) of partial stack data corresponding to record number 46.