||Sediment suspension and resuspension from small craft induced turbulence /
||Anne Arundel Community Coll., Arnold, MD. Environmental Center.;Environmental Protection Agency, Annapolis, MD. Chesapeake Bay Program.
|| U.S. Environmental Protection Agency, Chesapeake Bay Program ; Center for Environmental Research Information [distributor],
||EPA 600-3-82-084; EPA-78-D-X0426; EPA/CBP-TR-006S
Suspended sediments--Chesapeake Bay (Md. and Va.) ;
Boats and boating--Environmental aspects--Chesapeake Bay (Md. and Va.) ;
Chesapeake Bay (Md. and Va.)--Sediment, Suspended. ;
Atlantic Ocean--Chesapeake Bay. ;
Sediment, Suspended--Chesapeake Bay (Md. and Va.)
Aquatic plants ;
Suspended sediments ;
Water pollution ;
Chesapeake Bay ;
Plant ecology ;
Field tests ;
Propeller blades ;
Turbulent flow ;
Gravimetric analysis ;
Light transmission ;
||Env Science Center Library/Ft Meade,MD
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xi, 61 pages : illustrations, map ; 28 cm
The objective of this study was to determine if small vessels, operating in shallow waters, have any measurable effects in producing increased turbidities by the resuspension of fine sediments which may affect submerged aquatic vegetation (SAV). A two-phase approach was used, consisting of field tests in a suitable sub-estuary of the Chesapeake Bay, and laboratory measurements of propeller effects. During field trials, two different vessel types were used to make passes at set speeds over known water depths. Before and after measurements of light extinction, transmission, and gravimetric suspended sediment determinations were used to identify effects. Laboratory experiments were conducted to delineate propeller contribution to possible resuspension; this was done using laser-doppler anemometry to map the turbulence field produced by propeller action.
"September 1982." "EPA 600-3-82-084." "EPA 78-D-X0426." Cover title. Includes bibliographical references (pages 44-47). "PB82-265489." Print reproduction.