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Repeat microgravity data from Phoenix, Arizona, 2020-2023

Dates

Publication Date
Start Date
2020-01-27
End Date
2023-02-08

Citation

Kennedy, J.R., 2024, Repeat microgravity data from Phoenix, Arizona, 2020-2023: U.S. Geological Survey data release, https://doi.org/10.5066/P96Q1OZG.

Summary

This dataset represents the network-adjusted results of relative- and absolute-gravity surveys performed from 2020 to 2023 in and near the city of Phoenix, Arizona. Relative surveys were done using a Zero Length Spring, Inc. Burris relative-gravity meter. Absolute-gravity surveys were done using a Micro-g LaCoste, Inc. A-10 absolute-gravity meter. The effect of solid Earth tides and ocean loading were removed from the data prior to network adjustment. Non-linear instrument drift was removed by evaluating gravity change during repeated measurements at one or more base stations. Vertical gradients between the relative- and absolute-gravity meters were measured at each station where both types of measurement were collected to correlate [...]

Contacts

Point of Contact :
Jeffrey R Kennedy
Originator :
Jeffrey R Kennedy
Metadata Contact :
Jeffrey R Kennedy
Publisher :
U.S. Geological Survey
USGS Mission Area :
Water Resources
SDC Data Owner :
Arizona Water Science Center
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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Phoenix_AdjustedGravity_2020-2023.csv 9.87 KB text/csv

Purpose

Gravity data were collected to evaluate aquifer-storage change and aquifer-storage properties. Using the horizontal infinite-slab approximation, gravity data can be converted to a thickness of free-standing water (Pool and Eychaner, 1995). Because data are not corrected for soil-moisture variation, estimated storage changes include all storage change in the vadose zone.

Rights

This work is marked with Creative Commons Zero v1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/).

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P96Q1OZG
USGS_ScienceCenter https://www.sciencebase.gov/vocab/category/item/identifier Arizona Water Science Center
USGS_MissionArea https://www.sciencebase.gov/vocab/category/item/identifier Water Resources
USGS_keywords https://www.sciencebase.gov/vocab/category/item/identifier Geophysics, Hydrology

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