Last minute note: At the SEG Annual Meeting in Salt Lake City, I noticed that Input/Output found a very ingenious solution to the vector fidelity problem of bottom cables. In its new design there is a much reduced coupling between sensor unit and cable.

The special section in the August 2002 issue of TLE was of great interest to me—subjects that are near to my heart, sufficiently near to be called “relentless” in the Introduction by Cambois et al. I have written some comments to four papers in that section. The comments to two papers (Cambois et al., and Cordsen...

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