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Full-Text Articles in Earth Sciences
A Flume Experiment On The Effect Of Constriction Shape On The Formation Of Forced Pools, Douglas M. Thompson, C. R. Mccarrick
A Flume Experiment On The Effect Of Constriction Shape On The Formation Of Forced Pools, Douglas M. Thompson, C. R. Mccarrick
Physics, Astronomy and Geophysics Faculty Publications
A series of 18 flume runs were conducted in a 6-m long, 0.5-m wide recirculating flume with a bed gradient of 0.8% to determine the influence of obstruction shape on the formation and characteristics of forced pools. Six different-shaped obstructions were added to the flume with the maximum width of the obstruction held constant at 20 cm, which equaled a 40% constriction of flow. The obstruction shapes used included a square, a rectangle, a right triangle with the hypotenuse-facing upstream, a right triangle with the hypotenuse-facing downstream, a combination of a square and triangle with the hypotenuse-facing upstream, and a …
Did The Pre-1980 Use Of Instream Structures Improve Streams? A Reanalysis Of Historic Data, Douglas M. Thompson
Did The Pre-1980 Use Of Instream Structures Improve Streams? A Reanalysis Of Historic Data, Douglas M. Thompson
Physics, Astronomy and Geophysics Faculty Publications
In the 1930s, after only three years of scientific investigation at the University of Michigan Institute for Fisheries Research, cheap labor and government-sponsored conservation projects spearheaded by the Civilian Conservation Corps allowed the widespread adoption of in-stream structures throughout the United States. From the 1940s through the 1970s, designs of in-stream structures remained essentially unchanged, and their use continued. Despite a large investment in the construction of in-stream structures over these four decades, very few studies were undertaken to evaluate the impacts of the structures on the channel and its aquatic populations. The studies that were undertaken to evaluate the …