Repeat microgravity data from Albuquerque and Bernalillo County, New Mexico, 2016-2019 (ver. 2.0, September 2020)

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 were 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). Additional information about the network adjustment is provided under Data Quality. Version 2.0 of this dataset includes additional data from seven surveys carried out in 2017-2019. Data from the initial data release, which included five surveys from 2016-2017, are also included in this data release. Slight differences in published gravity values may exist between this and the original data release. In all such cases, version 2.0 values should replace those in the original. The original data release included gravity-change values converted to meters of water. For clarity, these are omitted in version 2.0. Storage change in meters of water can be calculated from gravity change using the Bouguer infinite slab approximation, whereby [change in gravity, in microGal]/41.9 = meters of water. Data are provided in shapefile and tabular (csv) format. The shapefile contains one entry per station per date. The csv file contains one row per station, with multiple columns for gravity and gravity standard deviation. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. First posted - September 22, 2017 Revised - September 9, 2020, ver. 2.0

Data and Resources

Field Value
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identifier USGS:5ef37ada82ced62aaae3eeb8
metadata_type geospatial
modified 20200909
old-spatial -106.7507, 34.9663, -106.4845, 35.2000
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
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spatial {"type": "Polygon", "coordinates": [[[-106.7507, 34.9663], [-106.7507, 35.2000], [ -106.4845, 35.2000], [ -106.4845, 34.9663], [-106.7507, 34.9663]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • albuquerque
  • amerigeo
  • amerigeoss
  • bernalillo-county
  • ckan
  • geo
  • geoss
  • gravimeter-measurement
  • national
  • new-mexico
  • north-america
  • southwest-gravity-program
  • time-series-datasets
  • united-states
  • usgs-5ef37ada82ced62aaae3eeb8
isopen False
license_id notspecified
license_title License not specified
maintainer Jeffrey R Kennedy
maintainer_email jkennedy@usgs.gov
metadata_created 2025-11-22T23:58:32.471031
metadata_modified 2025-11-22T23:58:32.471036
notes 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 were 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). Additional information about the network adjustment is provided under Data Quality. Version 2.0 of this dataset includes additional data from seven surveys carried out in 2017-2019. Data from the initial data release, which included five surveys from 2016-2017, are also included in this data release. Slight differences in published gravity values may exist between this and the original data release. In all such cases, version 2.0 values should replace those in the original. The original data release included gravity-change values converted to meters of water. For clarity, these are omitted in version 2.0. Storage change in meters of water can be calculated from gravity change using the Bouguer infinite slab approximation, whereby [change in gravity, in microGal]/41.9 = meters of water. Data are provided in shapefile and tabular (csv) format. The shapefile contains one entry per station per date. The csv file contains one row per station, with multiple columns for gravity and gravity standard deviation. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. First posted - September 22, 2017 Revised - September 9, 2020, ver. 2.0
num_resources 2
num_tags 15
title Repeat microgravity data from Albuquerque and Bernalillo County, New Mexico, 2016-2019 (ver. 2.0, September 2020)