Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics
Vegetation was added to a fully developed sandy point bar in the meander of a constructed stream. Significant changes in the flow structure and bed topography were observed. As expected, the addition of vegetative resistance decreased the depth-averaged streamwise velocity over the bar and increased...
| Main Authors: | , , |
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| Format: | Article |
| Language: | en_US |
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American Society of Civil Engineers
2012
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| Online Access: | http://hdl.handle.net/1721.1/68006 |
| _version_ | 1826199983637921792 |
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| author | Rominger, Jeffrey Tsaros Lightbody, Anne Nepf, Heidi |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Rominger, Jeffrey Tsaros Lightbody, Anne Nepf, Heidi |
| author_sort | Rominger, Jeffrey Tsaros |
| collection | MIT |
| description | Vegetation was added to a fully developed sandy point bar in the meander of a constructed stream. Significant changes in the flow structure and bed topography were observed. As expected, the addition of vegetative resistance decreased the depth-averaged streamwise velocity over the bar and increased it in the open region. In addition, the secondary circulation increased in strength but became confined to the deepest section of the channel. Over the point bar, the secondary flow was entirely outward, i.e., toward the outer bank. The changes in flow led to changes in bar shape. Although the region of the bar closest to the inner bank accumulated sediment, erosion of the bar and the removal of plants by scouring were observed at the interface between the planted bar and the open channel. |
| first_indexed | 2024-09-23T11:29:15Z |
| format | Article |
| id | mit-1721.1/68006 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:29:15Z |
| publishDate | 2012 |
| publisher | American Society of Civil Engineers |
| record_format | dspace |
| spelling | mit-1721.1/680062022-09-27T19:52:10Z Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics Rominger, Jeffrey Tsaros Lightbody, Anne Nepf, Heidi Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Nepf, Heidi Nepf, Heidi Rominger, Jeffrey Tsaros Vegetation was added to a fully developed sandy point bar in the meander of a constructed stream. Significant changes in the flow structure and bed topography were observed. As expected, the addition of vegetative resistance decreased the depth-averaged streamwise velocity over the bar and increased it in the open region. In addition, the secondary circulation increased in strength but became confined to the deepest section of the channel. Over the point bar, the secondary flow was entirely outward, i.e., toward the outer bank. The changes in flow led to changes in bar shape. Although the region of the bar closest to the inner bank accumulated sediment, erosion of the bar and the removal of plants by scouring were observed at the interface between the planted bar and the open channel. National Science Foundation (U.S.) (Grant No. EAR 0738352) 2012-01-06T15:46:48Z 2012-01-06T15:46:48Z 2010-02 2009-02 Article http://purl.org/eprint/type/JournalArticle 0733-9429 1943-7900 http://hdl.handle.net/1721.1/68006 Rominger, Jeffrey T., Anne F. Lightbody, and Heidi M. Nepf. “Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics.” Journal of Hydraulic Engineering 136.12 (2010): 994. en_US http://dx.doi.org/10.1061/(asce)hy.1943-7900.0000215 Journal of Hydraulic Engineering Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf American Society of Civil Engineers Prof. Nepf |
| spellingShingle | Rominger, Jeffrey Tsaros Lightbody, Anne Nepf, Heidi Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics |
| title | Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics |
| title_full | Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics |
| title_fullStr | Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics |
| title_full_unstemmed | Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics |
| title_short | Effects of Added Vegetation on Sand Bar Stability and Stream Hydrodynamics |
| title_sort | effects of added vegetation on sand bar stability and stream hydrodynamics |
| url | http://hdl.handle.net/1721.1/68006 |
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