Repeat microgravity data from Albuquerque and Bernalillo County, New Mexico, 2016-2021 (ver. 3.0, March 2023)
Dates
Publication Date
2017-09-22
Time Period
2016-06-09
Time Period
2016-08-08
Time Period
2016-12-01
Time Period
2017-05-02
Time Period
2017-08-03
Time Period
2017-12-07
Time Period
2018-05-14
Time Period
2018-09-04
Time Period
2018-12-10
Time Period
2019-04-22
Time Period
2019-08-14
Time Period
2019-12-16
Time Period
2020-08-07
Time Period
2020-12-15
Time Period
2021-04-12
Time Period
2021-08-11
Last Revision
2023-03-08
Citation
Kennedy, J.R., and Bell, M.E., 2017, Repeat microgravity data from Albuquerque and Bernalillo County, New Mexico, 2016-2021 (ver. 3.0, March 2023): U.S. Geological Survey data release, https://doi.org/10.5066/F73F4NH4.
Summary
This dataset represents the network-adjusted results of relative- and absolute-gravity surveys. Relative-gravity surveys were carried out using a Zero Length Spring, Inc. 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 tripod, and used to correlate the measurements between the two instruments. Relative-gravity [...]
Summary
This dataset represents the network-adjusted results of relative- and absolute-gravity surveys. Relative-gravity surveys were carried out using a Zero Length Spring, Inc. 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 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://github.com/jkennedy-usgs/sgp-gsadjust).
First posted - September 22, 2017
Revised - September 9, 2020, ver. 2.0
Revised - March 8, 2023, ver 3.0
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Albuquerque_AdjustedGravity_2016-2021_tabular.xml Original FGDC Metadata
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application/fgdc+xml
Albuquerque_AdjustedGravity_2016-2021_tabular.csv
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text/csv
Version3.0.txt
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Purpose
Data were collected to evaluate aquifer-storage change. Using the horizontal infinite-slab approximation, gravity data (in units of acceleration, for example, m/s^2), can be converted to a thickness of free-standing water, regardless of the depth to or porosity of the interval at which storage-change occurs. Data are not corrected for soil-moisture variation (that is, estimated storage changes include all storage change between the land surface and the aquifer).
Revision 2.0 by Jeffrey Kennedy on September 9, 2020.
Revision 3.0 by Jeffrey Kennedy on March 8, 2023. To review the changes that were made, see “Version 3.0.txt” in the attached files section.
