The synthetic seismograms

Figure displays the synthetic data which represent a single 3-D shot gather volume ``sliced'' vertically within the face of the cube at (x,y=465,t). If you have the CD-ROM version of this report, you can click your mouse on the figure caption button movie1. This action, after waiting for the movie to load, will pop up Dave Nichols' Animator window, which will start running a movie of y-slices through the shot record volume. With the cursor in the Animator window, you can type q to quit, n to stop the movie at the next frame, m to get the previous frame, and a to restart the frame loop if stopped. Also, you can click in the sidebar to reposition the frame within the volume or resize the window in the usual manner.

 

movie1
Figure 2 3-D synthetic point diffractor data. If you have the CD-ROM version of this paper, you can click your mouse on the figure caption button movie1 to run a movie of y-slices through the shot gather volume. Refer to the text for more details.

The shot is located on the surface in the center of the survey, directly above the second diffractor, at (465,465,0)m. There are $64\times 64 = 4096$ receiver (trace) positions along the surface of the cube, spaced at dx = dy = 15m. Each trace represents 1 sec of data sampled at 4 msec, resulting in a total shot gather volume of 1M voxels requiring 4 Mb memory. Each hyperbolic event corresponds to 3-D scattering from one of the point diffractors.