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Cyclic-fluctuation Methods for Determining Permeability as Applied to Valley-train Deposits in the Mad River Valley in Champaign County, Ohio

其他書名	By Alvin J. Feulner, Geologist, U.S. Geological Survey
出版	1956
URL	http://books.google.com.hk/books?id=a6ukwwEACAAJ&hl=&source=gbs_api

註釋Cyclic fluctuation methods described by Ferris (1952) have been used to compute the coefficient of transmissibility of the valley-train deposits along the Mad River in Champaign County, Ohio. The methods are the same as those described by Ferris, except that only one observation well was used, the center of the stream was assumed to be the suboutcrop from which recharge was initiated, and only the rising stage of streams and observation well fluctuations were used. The aquifer constants computed by the cyclic fluctuation method are in essential agreement with those computed from a pumping test and by laboratory analyses. Results of all tests give an average range for the coefficient of permeability of 4,100 to 4,400 gallons per day per square foot. The method, using only one observation well, appears valid for computing values of the coefficient of transmissibility in areas where other data are not available.