Building A Realistic Model River In The Lab - Train Set Size
Tuesday, September 29, 2009 - 14:07
in Earth & Climate
Should you use sand for stream restoration? Common wisdom said no, because it disrupts salmon spawning, researchers have successfully built and maintained a scale model of a living meandering gravel-bed river in the lab and found that sand is indispensable for helping to build point bars and to block off cut-off channels and chutes--tributaries that might start and detract from the flow and health of the stream. The significance of vegetation for slowing erosion and reinforcing banks has been known for a long time, but this is the first time it has been scientifically demonstrated as a critical component in meandering. read more