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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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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Jacob L. Conrad", "@type": "vcard:Contact", "hasEmail": "mailto:jlconrad@usgs.gov" } |
| description | 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. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P9AFRZDF", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.62a3804bd34ec53d2770bd9b.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_62a3804bd34ec53d2770bd9b |
| keyword |
[ "Arizona", "Arizona Water Science Center", "Pima County", "Santa Cruz River", "Southwest Gravity Program", "Tucson", "USGS:62a3804bd34ec53d2770bd9b", "artificial recharge", "geophysics", "geoscientificInformation", "gravimeter measurement", "gravitational field (earth)", "groundwater", "time series datasets" ] |
| modified | 2025-06-12T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -110.99760, 32.19820, -110.95500, 32.25560 |
| theme |
[ "geospatial" ] |
| title | Repeat microgravity data from Santa Cruz River, Tucson, Arizona, 2019-2024 (ver. 2.0, June 2025) |
