Publications
Publications intro.
Filter Total Items: 450
Silicoflagellate and diatom biostratigraphy in successive Burdigalian transgressions, middle Atlantic coastal plain
The earliest Miocene strata on the Middle Atlantic Coastal Plain were deposited in two distinct marine transgressions separated by a hiatus in sedimentation of approximately one million years. The older unit (Bed 3A of the Calvert Formation and its correlatives) was deposited in a relatively restricted basin of middle Burdigalian (middle early Miocene) age. The younger unit (Bed 3B of the Calvert
Authors
Karen L. Wetmore, George W. Andrews
Water resources data Maryland and Delaware, water year 1990, volume 2: Monongahela and Potomac River Basins
No abstract available.
Authors
R.W. James, J.F. Hornlein, R.H. Simmons, M.J. Smigaj
Water resources data Maryland and Delaware, water year 1990, Volume 1. Atlantic Slope Basins, Delaware River through Patuxent River
No abstract available.
Authors
R.W. James, J.F. Hornlein, B.F. Strain, M.J. Smigaj
Water use in the St. Jones River basin, Kent County, Delaware, 1983-86
No abstract available.
Authors
D. J. Phelan
Qualitative and numerical analyses of the effects of river inflow variations on mixing diagrams in estuaries
The effects of river inflow variations on alkalinity/salinity distributions in San Francisco Bay and nitrate/salinity distributions in Delaware Bay are described. One-dimensional, advective-dispersion equations for salinity and the dissolved constituents are solved numerically and are used to simulate mixing in the estuaries. These simulations account for time-varying river inflow, variations in e
Authors
L.A. Cifuentes, L. E. Schemel, J.H. Sharp
National water summary 1987: Hydrologic events and water supply and use
Water use in the United States, as measured by freshwater withdrawals in 1985, averaged 338,000 Mgal/d (million gallons per day), which is enough water to cover the 48 conterminous States to a depth of about 2.4 inches. Only 92,300 Mgal/d, or 27.3 percent of the water withdrawn, was consumptive use and thus lost to immediate further use; the remainder of the withdrawals (72.7 percent) was return f
By
Water Resources Mission Area, Water Availability and Use Science Program, Central Midwest Water Science Center, Dakota Water Science Center, Kansas Water Science Center, Pennsylvania Water Science Center, Oklahoma-Texas Water Science Center, Utah Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center
Ground-water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia; analysis of available water-quality data through 1987
Regional water quality conditions were analyzed on the basis of available data for the Delmarva Peninsula. A summary of 3 Federal, 5 State, and 14 local agencies, as well as various nonprofit organizations and universities, serving as repositories for water quality data is presented. Also included is information describing the range of chemical constituents, the ease of retrieving the data, and ge
Authors
P. A. Hamilton, Robert J. Shedlock, P. J. Phillips
Water resources data Maryland and Delaware, water year 1989, Volume 2: Monongahela and Potomac River Basins
No abstract available.
Authors
R.W. James, R.H. Simmons, B.F. Strain, M.J. Smigaj
Water resources data Maryland and Delaware, water year 1989, Volume 1. Atlantic Slope Basins, Delaware River through Patuxent River
No abstract available.
Authors
R.W. James, R.H. Simmons, B.F. Strain, M.J. Smigaj
Distribution patterns during winter and fidelity to wintering areas of American black ducks
The distribution patterns during winter of American black ducks (Anas rubripes) were compared among age – sex classes using band recovery data. In addition, fidelity to wintering areas was compared between sexes and between coastal and inland wintering sites. We did not find evidence of age- or sex-specific differences in distribution patterns (P > 0.10). Black ducks exhibited a stronger fidelity
Authors
Duane R. Diefenbach, James D. Nichols, James E. Hines
Water resources data Maryland and Delaware, water year 1988
No abstract available.
Authors
R.W. James, R.H. Simmons, B.F. Strain, M.J. Smigaj
Late Wisconsinan-Holocene paleogeography of Delaware Bay; a large coastal plain estuary
Analyses of an extensive grid of seismic reflection profiles along with previously published core data and modern sedimentary environment information from surrounding coastal areas permit an outline of the paleogeography of the large Delaware Bay estuary during the last transgression of sea level. During late Wisconsinan times, the Delaware River system eroded a dendritic drainage pattern into the
Authors
H.J. Knebel, C.H. Fletcher, J.C. Kraft