Author(s): James D. Grass
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Keywords: No Keywords
Abstract: In 1980, Ontario Hydro proposed construction of a high voltage transmission cable system across the eastern basin of Lake Erie to connect the Nanticoke generating station in Ontario, Canada to the presently undeveloped Coho site in Pennsylvania, USA. During marine geophysical surveys of the lake bottom, ice scours were discovered in soft sediments in 13 to 25 m water depth on both the Canadian and American sides of the lake. The ice scours were approximately 4.5 to 6 km long, 60 to 100 m wide and up to 2 m deep. Correlation of survey observations, gas pipeline damage and diver observations of ice scours on the Canadian side confirmed their recent age. Fresh scours found on the American side were formed during the winters of 1980/81 and 1981/82. Scours on the Canadian side were preserved while scours on the American side were obliterated from year to year.
Year: 1984