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Results for “Journal of Geotechnical and Geoenvironmental Engineering”
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Synopsis of basin-scale 3D framework modeling at the USGS Mapping Program
No abstract available.
Contributions to economic geology (short papers and preliminary reports) 1911: Part II - mineral fuels
No abstract available.
Water, ice, meteorological, and speed measurements at South Cascade Glacier, Washington, 1999 balance year
Winter snow accumulation and summer snow, firn, and ice melt were measured at South Cascade Glacier, Washington, to determine the winter and net balances for the 1999 balance year. The 1999 winter snow balance, averaged over the glacier, was 3.59 meters, and the net balance was 1.02 meters. Since the winter balance record began in 1959, only three winters have had a higher winter balance. Since the net balance record began in 1953, only 2 years have had a greater positive net balance than 1999. Runoff was measured from the glacier and an adjacent non-glacierized basin. Air temperature, precipitation, and humidity were measured nearby, and ice speed was measured. This report makes these data available to the glaciological and climatological community.
Final Report for SCEC Award #25347 - A dynamic rupture workshop to improve our understanding of fault friction
No abstract available.
Coalbed methane in Hungary, workshop and field trips: September 14 - October 1, 2002
No abstract available.
3-D mapping of the conterminous U.S. within the USGS US GeoFramework Initiative: A status report
No abstract available.
Inflation and cooling data from pahoehoe sheet flows on Kilauea volcano
No abstract available.
The saline groundwater legacy of a large buried coastal paleo-estuary
Elevated groundwater salinity in coastal regions threatens the beneficial use of fresh groundwater. Coastal groundwater management typically focuses on preventing intrusion from modern sources of seawater; however, past geological processes can also leave a legacy of saline groundwater now hidden in the subsurface. Here, multiple extensive airborne electromagnetic surveys provide detailed evidence of residual salinity from a paleo-estuary filling a late Pleistocene incised valley impacting more than 10,000 km 2 that is now hidden beneath coastal Louisiana’s deltaic plain. Our results show that the three-dimensional pattern of saline groundwater beneath Louisiana mimics that of near-surface aquifers surrounding the modern Delaware Bay estuary, fingerprinting the signature of the past drowning of a large, incised valley of the Mississippi River following post-glacial sea-level rise. These findings demonstrate a new framework for understanding legacy sources of saltwater critical for managing stressed water resources along global coastlines.
Jupyter notebooks for parameter estimation, uncertainty analysis, and optimization with the PEST++
No abstract available.