00000nam 2200000zi 4500 9.870575 CaOODSP 20241203113647 m o d f cr bn||||||||| 190326s1991 oncb ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-on nl----- En13-5/91-06E-PDF Joshi, S. R. (Sewak Ram) author. Lead-210 sedimentation in Lake Ontario / S.R. Joshi, B.S. Shukla and A.G. Bobba. Burlington, Ontario : National Water Research Institute = Institut national de recherche sur les eaux, [1991] 1 online resource (6 unnumbered pages, 19 pages, 1 unnumbered page) : map. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 91-06 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 11-13). "The sedimentation rates and diffusive sediment mixing coefficients at several Lake Ontario locations have been derived from measurements of unsupported lead-210 profiles in sediment cores. The values of mixing coefficients obtained in the present study are significantly lower than those obtained previously through an analysis of porosity profiles. The present estimates, however, are consistent with the rather well preserved pollutant profiles at some of these locations. It is observed that the more realistic value of the mixing coefficient, obtained by inclusion of the sedimentation rate parameter, follows the sign opposite to that for the constant obtained by regression analysis of the porosity data. Further work is required to delineate this apparent relationship between two important physical characteristics of deposited sediments"--Abstract. Includes management perspective and abstract in French. Lead isotopes gccst Sediments gccst Lakes Shukla, Bhagwan S. (Bhagwan Sahay), 1943- author. Bobba, A. G. (Arabinda Ghosh) author. Canada. Environment Canada. National Water Research Institute (Canada). Lakes Research Branch. National Water Research Institute (Canada). Rivers Research Branch. University of Toronto. Department of Chemistry. National Water Research Institute (Canada) NWRI contribution ; no. 91-06. (CaOODSP)9.844121 PDF 1.76 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-91-06-eng.pdf