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Publication Extents

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Earth-fissure movements associated with fluctuations in ground-water levels near the Picacho Mountains, south-central Arizona, 1980-84
Michael C. Carpenter
1991, Open-File Report 90-561
The Picacho earth fissure transects subsiding alluvial sediments near the east periphery of the Picacho basin in south-central Arizona. The basin has undergone land subsidence of as much as 3.8 meters since the 1930's owing to compaction of the aquifer system in response to ground-water-level declines that have exceeded 100...
A C language implementation of the SRO (Murdock) detector/analyzer
James N. Murdock, Scott E. Halbert
1991, Open-File Report 87-158
A signal detector and analyzer algorithm was described by Murdock and Hutt in 1983. The algorithm emulates the performance of a human interpreter of seismograms. It estimates the signal onset, the direction of onset (positive or negative), the quality of these determinations, the period and amplitude of the signal, and...
Economic effects of western Federal land-use restrictions on U.S. coal markets
William Downing Watson, A.L. Medlin, K.K. Krohn, D.S. Brookshire, R. L. Bernknopf
1991, Circular 1042
Current regulations on land use in the Western United States affect access to surface minable coal resources. This U.S. Geological Survey study analyzes the long-term effects of Federal land-use restrictions on the national cost of meeting future coal demands. The analysis covers 45 years. The U.S. Bureau of Land Management...