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Full-Text Articles in Physical Sciences and Mathematics

The Biogenic Structure Of Lower Chesapeake Bay Sediments : Epa Chesapeake Bay Program Final Report, Karl J. Nilsen, R. J. Diaz, Donald F. Boesch, Rodney Bertelsen, Michel Kravitz Jan 1982

The Biogenic Structure Of Lower Chesapeake Bay Sediments : Epa Chesapeake Bay Program Final Report, Karl J. Nilsen, R. J. Diaz, Donald F. Boesch, Rodney Bertelsen, Michel Kravitz

Reports

No abstract provided.


Organic Compounds In Surface Sediments And Oyster Tissues From The Chesapeake Bay, R. H. Bieri, P. O. Dufur, R. J. Huggett, W. Macintyre, P. Shou, C. L. Smith, C. W. Su Jul 1981

Organic Compounds In Surface Sediments And Oyster Tissues From The Chesapeake Bay, R. H. Bieri, P. O. Dufur, R. J. Huggett, W. Macintyre, P. Shou, C. L. Smith, C. W. Su

Reports

This report contains three parts. In Part I, the methodology to extract and analyze sediment and oyster tissue samples from the Chesapeake Bay is described in detail. Remaining problems are clearly identified. Part II contains the results and their discussion. Part III contains a number of appendices with detailed data. For those readers interested in still more detail, the complete bank of processed data is on computer tapes at this institute and at the Environmental Protection Agency-Chesapeake Bay Program office at Annapolis, Maryland. Also included in Part III we give the results of volatile halogenated organic compounds determined in water ...


Task 1 Evaluation On The Thickness Of The Mobile Surface Layer, Dam Neck, Virginia : Final Report To Malcolm Pirnie Engineers, Inc., John D. Boon Iii Jan 1977

Task 1 Evaluation On The Thickness Of The Mobile Surface Layer, Dam Neck, Virginia : Final Report To Malcolm Pirnie Engineers, Inc., John D. Boon Iii

Reports

Our objective under Task 1 was to make an assessment of the sedimentary features (sediment texture and structures) present in cores (obtained by vibratory method) at the project site in order to express an opinion as to the thickness of the "surface mobile sand layer". The mobile sand layer is that surficial sediment layer undergoing cut and fill episodes due to present day wave and current induced sediment transport. In addition, this report contains information extracted from existing literature on recent (1859 to 1968) shoreline behavior in the vicinity of the proposed outfall and on some aspects of surface sediment ...


Hampton Bar Dredging Project, Newport News Shipbuilding And Dry Dock Co. Borrow Site, Monitor Of Turbidity And Sedimentation: Final Report, John D. Boon Iii Jan 1975

Hampton Bar Dredging Project, Newport News Shipbuilding And Dry Dock Co. Borrow Site, Monitor Of Turbidity And Sedimentation: Final Report, John D. Boon Iii

Reports

This report summarizes field observations and sedimentological findings made by the Virginia Institute of Marine Science while monitoring a dredging project on Hampton Bar at Hampton, Virginia (Figure 1). Monitoring was conducted at the request of the Newport News Shipbuilding and Dry Dock Co. of Newport News, Virginia, for the purpose of assessing localized effects of the dredging operation on a real time basis so that operational decisions could be made to mitigate adverse ยท pacts or prevent their occurrence.


Suspended Sediments Near Pier 12 Norfolk Navy Base On 26 June And 15 September, 1973, Evon P. Ruzecki, R. Ayres Oct 1974

Suspended Sediments Near Pier 12 Norfolk Navy Base On 26 June And 15 September, 1973, Evon P. Ruzecki, R. Ayres

Reports

Results of two suspended sediment studies near Norfolk Navy Base Pier 12 are given. The studies were conducted during one tidal cycle on both 26 June and 15 September 1973. The following parameters were measured at five stations in the vicinity of the pier: suspended sediment water temperature, salinity and density current speed and direction iv


Development Of The Turbidity Maximum In A Coastal Plain Estuary : Final Report, Maynard M. Nichols, Galen Thompson Jul 1973

Development Of The Turbidity Maximum In A Coastal Plain Estuary : Final Report, Maynard M. Nichols, Galen Thompson

Reports

A study of the turbidity maximum in the Rappahannock Estuary; Virginia was conducted to determine how high concentrations of suspended sediment accumulate to form a maximum.

Time-series observations of current velocity, salinity and suspended sediment over 8 to 18 tidal cycles reveal that the maximum forms in a convergence of bottom residual currents near the transition between fresh and salty water. Sediment supplied mainly by the river is transported into the convergence by density currents and accumulates since velocity is nearly zero and settling exceeds upward mixing.

The maximum forms in the middle estuary after freshet or flooding and shifts ...


Inner Shelf Sediments Off Chesapeake Bay. I - General Lithology And Composition, Maynard M. Nichols Jan 1972

Inner Shelf Sediments Off Chesapeake Bay. I - General Lithology And Composition, Maynard M. Nichols

Reports

The sedimentary materials and bottom topography of more than 2400 square miles of the inner continental shelf floor north off the Chesapeake Bay entrance have been surveyed for potential mineral resources. Sediments consist of two principal types: (1) fine sand and (2) medium to coarse sand. The fine sand is grey-colored, subrounded, rich in quartz and relatively 11clean 11 and well sorted. The medium-coarse sand is typically iron-stained, rich in shell and poorly sorted. The fine sand covers inner parts of the shelf floor whereas medium to coarse sand covers seaward parts. Additionally, shell-rich medium to coarse sand occurs on ...


Characteristics Of Sediments In The James River Estuary, Virginia, Richard Moncure, Maynard Nichols Apr 1968

Characteristics Of Sediments In The James River Estuary, Virginia, Richard Moncure, Maynard Nichols

Reports

This report presents data on the physical and chemical characteristics of bottom sediments in the James River estuary, Virginia. The data were generated as part of a comprehensive study of sedimentation in which the initial objective was to broadly define the distribution of sediment properties.