1. Position of first shot= 300 m to the west of the first geophone
(a) Fold as a function of distance along a line for a 2D seismic experiment. (max 12, symmetric stair-step increase and decrease)
(b) Minimum offset each shot along a line for a 2D seismic experiment. (300m)
(c) Maximum offset each shot along a line for a 2D seismic experiment. (300 m +47*25 = 1475m)
Number of geophones = 48
Number of shots =30
Shot spacing = 50 m
Geophone spacing = 25 m
Position of first shot= 300 m to the west of the first geophone
Direction of shooting: W to E
On the following page is one method of solving the problem it we assume that the geophones move with the shot. Another assumption is that the geophones are fixed and the shot moves through the array.

2. Stack chart for CMP experiment-- one solution12