(Phys.org) —A pair of researchers has found, via sand sampling data, that the common perception that too little sand is being carried down the Mississippi River to replenish depleted loads is incorrect. In their study, published in Nature Geoscience, Jeffrey Nittrouer, of Rice University and Enrica Viparelli of the University of South Carolina describe how they analyzed sand sample data from two locations downstream from the Missouri River, and found that reduced sand loads due to damming has been made up for with increased river bottom erosion.
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