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Author: NATIONAL MARINE FISHERIES SERVICE HIGHLANDS N J MIDDLE ATLANTIC COASTAL FISHERIES CENTER. Publisher: ISBN: Category : Languages : en Pages : 119
Book Description
The report considers the activities and findings of the several integrated research projects designed to monitor the environmental effects of dredging in the Thames River and dredge spoil disposal at the New London Dumping Ground. Surveying of dredging impacts on suspeded materials in the Thames River has been completed by UCONN. The data confirm earlier indications that effects are limited to within 150 m of the dredge. A model of the river's flow characteristics has been selected and is in the the testing phase. (Three predredging surveys were conducted to determine baseline temperature, salinity, suspended solids and light transmission characteristics of the lower Thames River. These data were also used, in conjunction with historical information, to estimate predredging circulation of the lower river.) Mercury in river water was lower in February and April 1975 than during earlier periods, perhaps due to the removal by dredging of contaminated sediments. The report indicates large decreases, apparently due to natural seasonality, in benthic macrofaunal densities throughout the study area between predisposal and April 1975 collections. Predisposal water and sediment samples from 44 stations have been analyzed for fecal coliform and other bacteria. Highest fecal coliform counts were found in the river. Coliform counts were higher at disposal area stations on an ebb than on a flood tide, indicating that the Thames River outflow can have an effect on water quality within the designated disposal area.
Author: NATIONAL MARINE FISHERIES SERVICE HIGHLANDS N J MIDDLE ATLANTIC COASTAL FISHERIES CENTER. Publisher: ISBN: Category : Languages : en Pages : 119
Book Description
The report considers the activities and findings of the several integrated research projects designed to monitor the environmental effects of dredging in the Thames River and dredge spoil disposal at the New London Dumping Ground. Surveying of dredging impacts on suspeded materials in the Thames River has been completed by UCONN. The data confirm earlier indications that effects are limited to within 150 m of the dredge. A model of the river's flow characteristics has been selected and is in the the testing phase. (Three predredging surveys were conducted to determine baseline temperature, salinity, suspended solids and light transmission characteristics of the lower Thames River. These data were also used, in conjunction with historical information, to estimate predredging circulation of the lower river.) Mercury in river water was lower in February and April 1975 than during earlier periods, perhaps due to the removal by dredging of contaminated sediments. The report indicates large decreases, apparently due to natural seasonality, in benthic macrofaunal densities throughout the study area between predisposal and April 1975 collections. Predisposal water and sediment samples from 44 stations have been analyzed for fecal coliform and other bacteria. Highest fecal coliform counts were found in the river. Coliform counts were higher at disposal area stations on an ebb than on a flood tide, indicating that the Thames River outflow can have an effect on water quality within the designated disposal area.
Author: NATIONAL MARINE FISHERIES SERVICE HIGHLANDS N J MIDDLE ATLANTIC COASTAL FISHERIES CENTER. Publisher: ISBN: Category : Languages : en Pages : 85
Book Description
The report considers the activities and findings of the several integrated research projects designed to monitor the environmental effects of dredging in the Thames River and dredge spoil disposal at the New London Dumping Ground. Field activities and findings to date are presented, with emphasis on studies conducted between 1 January and 31 March 1975. New York Ocean Science Laboratory occupied the dump site for physical and chemical measurements on 28 February and 6 March 1975. Current speeds, directions and durations for both dates are presented, along with returns to date from a drifter study.
Author: James Walter Morton Publisher: ISBN: Category : Dredging Languages : en Pages : 44
Book Description
The goal of this study was to prepare a comprehensive review of the literature on the physical, chemical, and biological effects of dredging and spoil disposal in estuaries and to identify alternative spoil disposal methods. Specific objectives were to identify the most critical problems relating to dredging and spoil disposal and to summarize the progress made to date in solving these problems. Using literature search facilities, bibliographies, and communications with experts throughout the United States, about 520 scientific and technical articles on dredging and spoil disposal were screened. Information extracted from selected articles is included in this review.
Author: NATIONAL MARINE FISHERIES SERVICE HIGHLANDS N J MIDDLE ATLANTIC COASTAL FISHERIES CENTER.
Author: NATIONAL MARINE FISHERIES SERVICE HIGHLANDS N J MIDDLE ATLANTIC COASTAL FISHERIES CENTER.
Author: NATIONAL MARINE FISHERIES SERVICE HIGHLANDS N J MIDDLE ATLANTIC COASTAL FISHERIES CENTER.
Author: Middle Atlantic Coastal Fisheries Center (U.S.). Ecosystems Investigations
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Author: United States. National Marine Fisheries Service. Northeast Region
Author: Middle Atlantic Coastal Fisheries Center (U.S.). Ecosystems Investigations
Author: 
Author: James Walter Morton
Author: 
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