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Soil probes are used to obtain a quick look at sediments located on dry land or in shallow water. They are pushed in by hand, with extensions
added to expand the reach of the probe. The sample retrieved is small and often insufficient for multiple analyses, but they are fast to take
and portable enough to fit in a backpack. Soil probes are especially useful for determining where to take a larger core, mapping the geographic
extent of a particular layer (such as volcanic ash or beach deposits), and for obtaining quick samples for one or two analyses.
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USGS summer employee, Dhiren Khona, uses a soil probe to core the embankment of the Bear Lake's outlet canal. The sediment is collected
inside the narrow, hollow, tube beneath the handle. Photo from summer 1999, courtesy of Marith Reheis.
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U.S. Department of the Interior | U.S. Geological Survey