trench sampling (Other Keyword)
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A Refinement of Rice and Plog's Method of Estimating Areas Sampled by Trenches (1987)
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Rice and Plog present a persuasive argument for the use of mechanical trenching as a sampling strategy for the identification of features that have little or no surface visibility. I suggest a refinement of their argument and formulae for the estimated sampled area (ESA) that allows for the explicit treatment of a broader class of problems.