00000nam 2200000zi 4500 9.870612 CaOODSP 20241203113647 m o d f cr nn||||||||| 190326q1987 oncd ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-on En13-5/87-161E-PDF Bukata, R. P., author. Relationships among Secchi disk depth, beam attenuation coefficient, and irradiance attenuation coefficient for Great Lakes waters / by R.P. Bukata, J. H. Jerome and J. E. Bruton. Burlington, Ontario : Rivers Research Branch, National Water Research Institute, Canada Centre for Inland Waters, [1987]. 1 online resource (16, [13] pages) : charts text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 87-161 Cover title. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 15-16). "Optical data collected between 1973 and 1979 are utilized to discuss the relationships among the directly observed Secchi disk depths and the directly measured total attenuation coefficients and irradiance attenuation coefficients in Lakes Erie, Ontario, Superior and Huron, as well as Georgian Bay. Tables and curves are presented depicting these mathematical relationships obtained by statistical regressions. These relationships are used to effect an intercomparison of the four Laurentian Great Lakes. In addition, subsurface, vertically downward sighting ranges are estimated and compared to the Secchi disk depths as determined from the mathematical regressions"--Abstract. Includes management perspective and abstract in French. gccst Water quality Secchi disk depth Jerome, John H. (John Harvey) author. Bruton, J. E., author. Canada. Environment Canada. National Water Research Institute (Canada). Rivers Research Branch. Canada Centre for Inland Waters. NWRI contribution ; 87-161. (CaOODSP)9.844121 PDF 1.94 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-87-161-eng.pdf