Wednesday, December 21, 2011

Gravity data from San Pedro River basin

The USGS has published a gravity data set for the San Pedro River basin in southeastern Arizona.

The report includes "relative and absolute gravity data at 321 stations in the San Pedro River Basin of southeastern Arizona since 2000. Data are of three types: observed gravity values and associated free-air, simple Bouguer, and complete Bouguer anomaly values, useful for subsurface-density modeling; high-precision relative-gravity surveys repeated over time, useful for aquifer-storage-change monitoring; and absolute-gravity values, useful as base stations for relative-gravity surveys and for monitoring gravity change over time. The data are compiled, without interpretation, in three spreadsheet files."

[Right, location of gravity stations in Upper San Pedro River Basin. From the USGS report]

Ref: Kennedy, J.R., Winester, D., 2011, Gravity data from the San Pedro River Basin, Cochise County, Arizona: U.S. Geological Survey Open-File Report 2011–1287, 11 p. and data files, available at

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