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Repeat microgravity data from Santa Cruz River, Tucson, Arizona, 2019-2024 (ver. 2.0, June 2025)

This dataset contains the network-adjusted results of relative- and absolute-gravity surveys performed from 2019 to 2024 in and near the Santa Cruz River channel in the city of Tucson, Arizona. 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 differences and absolute-gravity data were combined using a least-squares network adjustment, as implemented in the software GSadjust (https://doi.org/10.5066/P9YEIOU8). Information about the network adjustment is provided under Data Quality in the metadata. This updated version of data now includes gravity data for 2023 and 2024.

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Author(s) Libby M. Wildermuth orcid, Jacob L Conrad orcid
Publication Date 2023-06-14
Beginning Date of Data 2019-08-12
Ending Date of Data 2024-03-05
Data Contact
DOI https://doi.org/10.5066/P9AFRZDF
Citation Wildermuth, L.M., and Conrad, J.L., 2023, Repeat microgravity data from Santa Cruz River, Tucson, Arizona, 2019-2024 (ver. 2.0, June 2025): U.S. Geological Survey data release, https://doi.org/10.5066/P9AFRZDF.
Metadata Contact
Metadata Date 2025-06-12
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Loading https://doi.org/10.3133/sir20235115

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License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: ScienceBase
Harvest Date: 2025-09-04T05:04:25.009Z