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Sonic depth sounder for laboratory and field use

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Sonic depth sounder for laboratory and field use; 1961; CIR; 450; Richardson, E. V.; Simons, Daryl B.; Posakony, G. J.

Summary

The laboratory investigation of roughness in alluvial channels has led to the development of a special electronic device capable of mapping the streambed configuration under dynamic conditions. This electronic device employs an ultrasonic pulse-echo principle, similar to that of a fathometer, that utilizes microsecond techniques to give high accuracy in shallow depths. This instrument is known as the sonic depth sounder and was designed to cover a depth range of 0 to 4 feet with an accuracy of ? 0.5 percent. The sonic depth sounder is capable of operation at frequencies of 500, 1,000 and 2,000 kilocycles. The ultrasonic beam generated at the transducer is designed to give a minimum-diameter interrogating signal over the extended depth [...]

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Harvested on Mon Jul 21 14:08:45 MDT 2014 from MODS XML Service

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Type Scheme Key
local-index unknown cir450
local-pk unknown 3523
series unknown Circular

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journalCircular
edition-
languageENGLISH
citationTypeReport

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