Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16743
Borehole geophysical logging for water-resources investigations in Pennsylvania Borehole geophysical logging for water-resources investigations in Pennsylvania
Borehole geophysical logging is a procedure to collect and transmit specific information about the geologic formations penetrated by a well by raising and lowering a set of probes or sondes that contain water-tight instruments in the well. The data collected can be used to determine general formation geology, fracture distribution, vertical borehole flow, and water-yielding capabilities.
Authors
Randall W. Conger
Great blue heron electrocution in Loudoun County, Virginia Great blue heron electrocution in Loudoun County, Virginia
No abstract available.
Authors
R. B. Clapp
Forword Forword
(excerpt from Forword) The Mediterranean Symposium, part of the annual conference of The Colonial Waterbird Society in October 1993 in Arles, France, was the successful culmination of ideas shared among leading European waterbird and wetland scientists... Both invited and contributed papers focused on two areas - breeding biology (especially of threatened or little known species), and...
Authors
R.M. Erwin
Bobolink, Dolichonyx oryzivorus Bobolink, Dolichonyx oryzivorus
No abstract available.
Authors
B.A. Dowell
Next steps for the North American Amphibian Monitoring Program Next steps for the North American Amphibian Monitoring Program
No abstract available.
Authors
Sam Droege
Sources of variation in migratory movements of animal populations: statistical inference and a selective review of empirical results for birds Sources of variation in migratory movements of animal populations: statistical inference and a selective review of empirical results for birds
No abstract available.
Authors
J.D. Nichols
Hydraulic conductivity of the streambed, east branch Grand Calumet River, northern Lake County, Indiana Hydraulic conductivity of the streambed, east branch Grand Calumet River, northern Lake County, Indiana
Horizontal and vertical hydraulic conductivity of the Streambed were estimated from results of hydraulic tests along four transects across the east branch Grand Calumet River in northern Lake County, Indiana. Tests were done in two types of temporary wells installed in the Streambed 2-inch-diameter wells that had a 1- or 2-foot length of wire-wrapped screen and 3-inch-diameter wells that...
Authors
R.F. Duwelius
Trends in surface-water quality in Connecticut, 1969-88 Trends in surface-water quality in Connecticut, 1969-88
Surface-water-quality data from selected monitoring stations in Connecticut were analyzed for trend, using the Seasonal Kendall test, for water years 1969-88, 1975-88, and 1981-88. The number of constituents and stations evaluated varied with the different time periods. The 39 monitoring stations included 26 freshwater streams with associated discharge data, 7 tidally affected streams, 4...
Authors
E. C. Trench
Structural outer rim of Chesapeake Bay impact crater: Seismic and bore hole evidence Structural outer rim of Chesapeake Bay impact crater: Seismic and bore hole evidence
Nine seismic-reflection profiles and four continuous core holes define the gross structural and stratigraphic framework of the outer rim of the Chesapeake Bay impact crater. The rim is manifested as a 90 km diameter ring of terraced normal-fault blocks, which forms a ∼320 m–1200 m high rim escarpment. The top of the rim escarpment is covered by a 20 m–30 m thick ejecta blanket. The...
Authors
C. W. Poag