00000nam 2200000za 4500 9.861990 CaOODSP 20241203113644 cr ||||||||||| 180914s1971 onca||||o f000 0 eng d CaOODSP eng n-cn-on En36-515/44E-PDF Sly, P. G. (Peter Gerent), 1939- Submersible operations in Georgian Bay and Lake Erie — 1970 [electronic resource] / P.G. Sly. Ottawa : Dept. of Energy, Mines and Resources, Inland Waters Branch, 1971. iii, 36 p. : ill. Technical bulletin ; no. 44 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Most of the studies undertaken by the Limnogeology Section are directed towards obtaining a clearer understanding of geologically recent and present environmental controls, particularly those related to eutrophication and pollution. Research activities have mostly been conducted from surface vessels, using standard sampling, coring and sensing equipment. However, some detailed surveys and equipment trials have been supported by scuba diving techniques (Sly l969a), and over the past three years, the demand for diver supported operations has grown progressively. The need to understand sediment distributions and to quantify variations, which can be used to reflect short—term environmental changes as they relate to specific problem areas (Sly 1969b), has also become more and more evident"--Introd. Underwater explorations Canada. Environment Canada. Canada. Inland Waters Branch. Canada. Department of Energy, Mines and Resources. Technical bulletin (Canada. Inland Waters Branch) no. 44 (CaOODSP)9.861115 PDF 2.19 MB https://publications.gc.ca/collections/collection_2018/eccc/En36-515-44-eng.pdf