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An improved tri-tube cryogenic gravel sampler.Author(s): Fred H. Everest; Carl E. McLemore; John F. Ward
Source: Res. Note PNW-RN-350. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p
Publication Series: Research Note (RN)
Station: Pacific Northwest Research Station
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DescriptionThe tri-tube cryogenic gravel sampler has been improved, and accessories have been developed that increase its reliability and safety of operation, reduce core extraction time, and allow accurate partitioning of cores into subsamples. The improved tri-tube sampler is one of the most versatile and efficient substrate sampling tools yet developed.
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CitationEverest, Fred H.; McLemore, Carl E.; Ward, John F. 1980. An improved tri-tube cryogenic gravel sampler. Res. Note PNW-RN-350. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p
KeywordsForestry equipment, stream environment, sedimentation
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