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Full-Text Articles in Physical Sciences and Mathematics

Storm-Wave And Storm-Surge Modification Of Virginia's Ocean Coast, Wyman Harrison Dec 1971

Storm-Wave And Storm-Surge Modification Of Virginia's Ocean Coast, Wyman Harrison

Reports

The purpose of this study was to begin work on a method for operational prediction of storm-induced beach changes. The thought was to use wind and storm-surge data that are predicted on a routine basis by the National Weather Service, NOAA, and it was felt that if such a procedure could be developed, it would be possible to provide estimates of beach erosion or deposition as part of routine weather forecasts whenever storms threatened. It was also hoped that it might be possible to make estimates of shoreline erosion during previous years by using historical storm data in the prediction …


Investigation Of The Water Table In A Tidal Beach : Final Report, W. Harrison, John D. Boon, L. E. Fausak, C. S. Fang, S. N. Wang Oct 1971

Investigation Of The Water Table In A Tidal Beach : Final Report, W. Harrison, John D. Boon, L. E. Fausak, C. S. Fang, S. N. Wang

Reports

  • I. Instrumentation for Measurement of Water Table Fluctuations by John D. Boon, III, and W. Harrison
  • II. The Beach Water Table as a Response Variable of the System by L. E. Fausak
  • III. Changes in Foreshore Sand Volume: Role of Fluctuations in Water Table and Ocean Still Water Level by W. Harrison
  • IV. One-dimensional Finite Element Analysis of the Groundwater Flow by W. Harrison, C. S. Fang, and S. N. Wang
  • V. Two-dimensional Finite Element Analysis of the Groundwater Flow by C. S. Fang, S. N. Wang, and W. Harrison


Surface Observations, Ground Truth And Data : Nasa-Usgs Mission 144 : Chesapeake Bay Region, Sept. 22-30, 1970, Maynard M. Nichols Jul 1971

Surface Observations, Ground Truth And Data : Nasa-Usgs Mission 144 : Chesapeake Bay Region, Sept. 22-30, 1970, Maynard M. Nichols

Reports

Surface observations of coastal waters and "ground. truth" data were obtained to aid interpretation and analyses of overflight photography and imagery. Among the broad objectives of the mission was to investigate the potential of high-altitude, multispectral photography as a tool for the improved planning necessary to cope with multidisciplinary problems within the coastal zone, specifically with regard to:

1. The inventory and evaluation of the central Atlantic coastal area natural resources;

2. The assessment of human and natural degradation of these resources;

3. The feasibility of monitoring resource allocation and management, including land use categories and the impact of urbanization …


The Distribution And Ecology Of The Gammaridea (Crustacea : Amphipoda) Of The Lower Chesapeake Estuaries, James Feely, Marvin L. Wass Jan 1971

The Distribution And Ecology Of The Gammaridea (Crustacea : Amphipoda) Of The Lower Chesapeake Estuaries, James Feely, Marvin L. Wass

Reports

Gammarid amphipods of three tidal rivers entering Chesapeake Bay were studied for ten months, particularly in the York River where 40 species were record during the period. Several species moved up or down the rivers with changing salinity. The more abundant species had longer breeding seasons. The number of described species from lower Chesapeake Bay is now 42 and the presence of 10 undescribed species and of several which bracket the region indicates that much remains to be learned about amphipods in the Bay. Nineteen of these have a boreal affinity and seven are limited to the Virginian subprovince. A …


Hydroids And Hydromedusae Of Southern Chesapeake Bay, Dale Calder Jan 1971

Hydroids And Hydromedusae Of Southern Chesapeake Bay, Dale Calder

Reports

A survey was made in southern Chesapeake Bay and its tributaries from April 1965 through March 1968 to determine the species of hydrozoans present, their seasonality and reproductive periodicities. This report discusses 43 hydroid and 27 medusa species known from the study area, of which 23 hydroids and 11 medusae have not previously been found in Chesapeake Bay. Clytia paulensis and the hydroid of Moerisia lyonsi have not been reported before in North American waters, and the hydroid of Amphinema dinema is recorded for the first time from the western Atlantic. The present records extend the northern range of one …