Main Title |
Transports in the Duluth-Superior Harbor (Journal Version). |
Author |
Stortz, K. R. ;
Sydor, M. ;
|
CORP Author |
Minnesota Univ.-Duluth. Dept. of Physics.;Environmental Research Lab.-Duluth, MN. |
Year Published |
1980 |
Report Number |
EPA-R-803952; EPA-600/J-80-423; |
Stock Number |
PB83-240804 |
Additional Subjects |
Sediment transport ;
Hydrodynamics ;
Water pollution ;
Mathematical models ;
Particles ;
Water currents ;
Water traffic ;
Turbulence ;
Boundaries ;
Reprints ;
Duluth-Superior Harbor ;
Water levels ;
Oil spills
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB83-240804 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
12p |
Abstract |
A hydrodynamic model and a water quality model for the Duluth-Superior harbor are developed and verified by using data on currents, water levels, and water quality parameters. The water quality model is subsequently used to simulate the transport of particulates resuspended by ship traffic and the dispersal of dissolved material spilled into the harbor at a major industrial site. Resuspension of bottom sediments by ship traffic is an important secondary source of harbor turbidity. Suspended solids in ship resuspension plumes range from 10 to 50 mg/l, five times the usual concentration of suspended solids in the harbor. An estimated 100,000 kg of material is resuspended per passage of a ship. The resuspended material is coarse and settles rapidly, thus only 0.1% of the material flows out directly into Lake Superior. It was found that a spill of dissolved pollutant in the inner harbor would take from 8 to 21 days to reach Lake Superior at peak concentrations. |
Availability Notes |
Pub. in Jnl. of Great Lakes Research 6(3), p223-231 1980. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Transports in the Duluth-Superior Harbor (Journal Version). |
PUB Date Free Form |
c1980 |
Category Codes |
8H; 68D; 48G |
NTIS Prices |
Not available NTIS |
Primary Description |
600/03 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
324619427 |
Origin |
NTIS |
Type |
CAT |