|
|
|
|
| LEADER |
01883 am a22002053u 4500 |
| 001 |
111614 |
| 042 |
|
|
|a dc
|
| 100 |
1 |
0 |
|a Liu, Chao
|e author
|
| 100 |
1 |
0 |
|a Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
|e contributor
|
| 100 |
1 |
0 |
|a Nepf, Heidi
|e contributor
|
| 100 |
1 |
0 |
|a Nepf, Heidi
|e contributor
|
| 700 |
1 |
0 |
|a Nepf, Heidi
|e author
|
| 245 |
0 |
0 |
|a Sediment deposition within and around a finite patch of model vegetation over a range of channel velocity
|
| 260 |
|
|
|b American Geophysical Union (AGU),
|c 2017-09-21T19:28:40Z.
|
| 856 |
|
|
|z Get fulltext
|u http://hdl.handle.net/1721.1/111614
|
| 520 |
|
|
|a The interaction between flow and vegetation creates feedbacks to deposition that vary with channel velocity. This experimental study describes how channel velocity and stem-generated turbulence influence the deposition within and around an emergent patch of model vegetation, with a particular focus on deposition within the patch. The Reynolds number threshold for stem-scale turbulence generation was determined using velocity spectra and flow visualization. At high channel velocity resuspension occurred in the bare regions of the channel and a nonuniform spatial distribution of net deposition was observed around and within the patch. In contrast, at low channel velocity there was no (or limited) resuspension and a uniform distribution of net deposition was observed around and within the patch. The deposition inside the patch was enhanced, relative to a bare-channel control, only when the following two criteria were met: (1) the absence of stem turbulence, and (2) the presence of sediment resuspension in the bare channel. Comparison to previous lab and field studies further support these criteria.
|
| 520 |
|
|
|a National Science Foundation (U.S.) (Grant EAR-1414499)
|
| 546 |
|
|
|a en_US
|
| 655 |
7 |
|
|a Article
|
| 773 |
|
|
|t Water Resources Research
|
