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Repeat microgravity data from Tucson Basin and Avra Valley, Arizona, 2016-2019 This dataset supercedes an earlier data release and includes all previous data in addition to data from 2019. These data represent the network-adjusted results of relative- and absolute-gravity surveys. Relative-gravity surveys were carried out using a Micro-g LaCoste D-series relative-gravity meter. The effect of solid Earth tides and ocean loading were removed from the data. Instrument drift was removed by evaluating gravity change during repeated measurements at one or more base stations. Absolute-gravity surveys were carried out using a Micro-g LaCoste, Inc. A-10 absolute-gravity meter. Vertical gradients between the different measuring heights of the absolute- and relative-gravity meters were measured using... Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, Arizona Water Science Center, Avra Valley, Southwest Gravity Program, Tucson, All tags... USGS Science Data Catalog (SDC), Water Resources, geophysics, geoscientificInformation, gravimeter measurement, gravitational field (earth), groundwater, time series datasets, Fewer tags Gravity data from the Truxton area, northwestern Arizona This dataset represents the network-adjusted results of relative- and absolute-gravity surveys. Data are provided in tabular (csv) and vector (shapefile) formats with one row per station.Relative-gravity surveys were carried out using a ZLS Coporation Burris relative-gravity meter. The effect of solid Earth tides and ocean loading were removed from the data. Instrument drift was removed by evaluating gravity change during repeated measurements at one or more base stations, or between absolute-gravity stations. Absolute-gravity surveys were carried out using a Micro-g LaCoste, Inc. A-10 absolute-gravity meter. The vertical gravity gradient was assumed to be -3 microGal/cm at each absolute-gravity site. Relative-gravity... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona Water Science Center, Geophysics, Hualapai Indian Reservation, Mohave Country, Peach Springs, All tags... Southwest Gravity Program, Truxton, USGS Science Data Catalog (SDC), Water Resources, geophysics, gravimeter measurement, gravitational field (earth), hydrogeology, Fewer tags Repeat microgravity data from Tucson Basin and Avra Valley, Arizona, 2016-2019 (COPY) This dataset supercedes an earlier data release and includes all previous data in addition to data from 2019. These data represent the network-adjusted results of relative- and absolute-gravity surveys. Relative-gravity surveys were carried out using a Micro-g LaCoste D-series relative-gravity meter. The effect of solid Earth tides and ocean loading were removed from the data. Instrument drift was removed by evaluating gravity change during repeated measurements at one or more base stations. Absolute-gravity surveys were carried out using a Micro-g LaCoste, Inc. A-10 absolute-gravity meter. Vertical gradients between the different measuring heights of the absolute- and relative-gravity meters were measured using... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, Arizona Water Science Center, Avra Valley, Southwest Gravity Program, Tucson, All tags... USGS Science Data Catalog (SDC), Water Resources, geophysics, geoscientificInformation, gravimeter measurement, gravitational field (earth), groundwater, time series datasets, Fewer tags Repeat microgravity data from South Houghton Area Recharge Project, Tucson, Arizona, 2020-2021 (Under Revision) Note: this data release is currently being revised and is temporarily unavailable. Relative-gravity surveys were carried out using a ZLS Burris relative-gravity meter. The effect of solid Earth tides and ocean loading were removed from the data. Instrument drift was removed by evaluating gravity change during repeated measurements at one or more base stations. Absolute-gravity surveys were carried out using a Micro-g LaCoste, Inc. A-10 absolute-gravity meter. Vertical gradients between the different measuring heights of the absolute- and relative-gravity meters were measured using a relative-gravity meter and fully-adjustable tripod, and used to correlate the measurements between the two instruments. Relative-gravity... Categories: Data; Tags: Arizona, Arizona Water Science Center, SHARP, Southwest Gravity Program, Tucson, All tags... artificial recharge, geophysics, geoscientificInformation, gravimeter measurement, gravitational field (earth), groundwater, time series datasets, Fewer tags