Accession Number : ADA085850


Title :   The Physical and Chemical Conditions of Chesapeake Bay; An Evaluation.


Descriptive Note : Special rept.,


Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD CHESAPEAKE BAY INST


Personal Author(s) : Schubel,J R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a085850.pdf


Report Date : Jan 1972


Pagination or Media Count : 77


Abstract : An assessment of the physical and chemical conditions of the Chesapeake Bay estuarine system indicates: (1) that there are marked natural spatial and temporal variations of temperature, that man has in local areas, had a measurable effect on the temperature distribution, but that the present inputs of heated waters from power plants do not pose a threat to the Bay; (2) that there are large natural spatial and temporal variations of salinity, and that man has had almost no effect on the salinity distribution; (3) that man's activities have increased the frequency, duration, and extent of low oxygen zones in the upper reaches of a number of the tributaries; (4) that man's activities have resulted in large inputs of nutrients which have produced undesirable conditions in a number of the tributaries, but that the nutrient levels in the main body of the Bay are at an acceptable level; (5) that the Bay is being rapidly filled with sediments, and that the fine-grained sediments have a number of deleterious indirect effects on the ecology of the Bay; and (6) that there are large natural variations in the distributions of heavy metals, and suggests that levels have probably always been relatively high. (Author)


Descriptors :   *CHESAPEAKE BAY , TEMPERATURE , NUTRIENTS , VARIATIONS , OXYGEN , SALINITY , SEDIMENTS , GEOGRAPHIC DISTRIBUTION , ECOLOGY , HEAVY METALS , AQUATIC ANIMALS


Subject Categories : Physical and Dynamic Oceanography
      Hydrology, Limnology and Potamology


Distribution Statement : APPROVED FOR PUBLIC RELEASE