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Repeat microgravity data from the Big Chino Subbasin, 2001-2017, Yavapai County, Arizona

July 31, 2019

This dataset contains absolute-gravity measurements made using an A-10 absolute gravity meter (Micro-g Lacoste, Inc.) between 2009 and 2017 in the Big Chino Subbasin, Yavapai County, Arizona. Measurements were made about 3 times per year at a total of 33 different stations. Data are presented in tabular form, including relevant parameters used for processing. Data were output by g software (Micro-g Lacoste, Inc.) version 9.12.04.23. A correction for laser-frequency drift was applied, based on regular calibration of the HeNe laser used in the A-10 against an iodine-stabilized laser. A second soil-moisture correction was applied based on satellite soil-moisture measurements, an infiltration model, and the elevation of the terrain surrounding each station. This correction is described in detail in the accompanying interpretive report (Kennedy and others, 2019). Kennedy, J.R., Kahler, L.M., Read, A.L., 2019, Aquifer storage change and storage properties, 2010-2017, in the Big Chino Subbasin, Yavapai County, Arizona: U.S. Geological Survey Scientific Investigations Report 2019-5060, 50 p.