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| Name | Dam-breach experiment: outburst flood from an overtopping lake (USGS) |
| Video Uploader | Video From Daniel García-Castellanos |
| Upload Date | This Video Uploaded At 13-08-2016 15:52:34 |
| Video Discription | FULL ORIGINAUSGS VIDEO HERE: https://www.youtube.com/watch?v=J08__r3H1LI&t=2s I gave a talk at the PAGES 2017 meeting about this: https://youtu.be/tyhHjDLwHlI?t=2m40s Why do natural and man-made dams quickly collapse when the water level exceeds the height of the barrier, rather than just allowing the water to gradually overflow? In this dam-breach experiment, a 1-m deep overtopping pond triggers a small flood by gradually eroding the compacted-sand barrier. By USGS, Oregon (2012-06-13).The lake behind the barrier is 23.7 m2 in area (not 10 as wrongly printed in the video). Relevant papers: Logan, M., and Iverson, R.M., 2007, revised 2013, Video documentation of experiments at the USGS debris-flow flume 1992–2006 (amended to include 2007–2013): U.S. Geological Survey Open-File Report 2007–1315 v. 1.3., http://pubs.usgs.gov/of/2007/1315/. Walder, J.S., Iverson, R.M., Godt, J.W., Logan, M., Solovitz, S.A., 2015. Controls on the breach geometry and flood hydrograph during overtopping of noncohesive earthen dams: DAM-BREACH HYDRAULICS AND HYDROGRAPHS. Water Resour. Res. n/a–n/a. doi:10.1002/2014WR016620 Garcia-Castellanos, D., J. O’Connor, 2018. Outburst floods provide erodability estimates consistent with long-term landscape evolution. Scientific Reports. 8:10573. Doi:10.1038/s41598-018-28981-y [open access] https://www.nature.com/articles/s41598-018-28981-y Video Ownership: USGS, published under FOIA: https://www2.usgs.gov/foia/ |
| Category | Science & Technology |
| Tags | science | geology | river | risk assesment | modeling | analogue experiments | floods | erosion |
