Time/Depth Recorder.
Abstract:
The timedepth recorder that biologists needed to study the sounding characteristics of gray whales had to be compact and self-contained. The design that has emerged meets these criteria in addition, it is positively buoyant, can record for a twelve-hour period, and has a Xenon light to aid in recovery.
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DOCUMENT & CONTEXTUAL SUMMARY
Distribution:
Approved For Public Release
RECORD
Collection: TR