By IUGLS
Oct 24, 2011
Research conducted for the International Upper Great Lakes Study is featured in the latest edition of the Journal of Great Lakes Research, published quarterly by the International Association for Great Lakes Research.
The September issue of the peer-reviewed journal includes articles on two studies that were supported by IUGLS.
The first, "Erosion of glacial till from the St. Clair River (Great Lakes basin)," is by Jose M. Mier and Marcelo H. Garcia.
According to an abstract: " Laboratory tests were performed in order to obtain the value of the critical shear stress needed to erode the cohesive fraction of the bed sediment material, known as glacial till, from the St. Clair River ... These results could be used in combination with mathematical models to estimate the risk of scour and erosion at locations where the glacial till is exposed to both strong currents and flow forces induced by the large navigation vessels commonly observed along the course of the St. Clair River."
The second, "Bed morphology, flow structure, and sediment transport at the outlet of Lake Huron and in the upper St. Clair River," is by Jonathan A. Czuba, James L. Best, Kevin A. Oberg, Daniel R. Parsons, P. Ryan Jackson, Marcelo H. Garcia, and Peter Ashmore.
An abstract explains: “The study results suggest that the measured mean flow and dredging within the channel have not produced major scour of the upper St. Clair River and that the recent fall in the level of Lake Huron is unlikely to have been caused by these mechanisms.”
Two other research projects published in the journal also may be of interest to those following the Study.
Summaries of “Mid Holocene lake level and shoreline behavior during the Nipissing phase of the upper Great Lakes at Alpena, Michigan, USA” and “An appraisal of the Great Lakes advanced hydrologic prediction system” are available online.
---Image:Graphical abstract from erosion study. Via sciencedirect.com