000202023 001__ 202023
000202023 005__ 20190416055543.0
000202023 020__ $$a978-1-138-02674-2
000202023 0247_ $$2doi$$a10.1201/b17133-122
000202023 037__ $$aCONF
000202023 245__ $$aSediment transport in steep channels with large roughness elements
000202023 269__ $$a2014
000202023 260__ $$aLeiden$$bCRC Press/Balkema$$c2014
000202023 336__ $$aConference Papers
000202023 500__ $$a[987]
000202023 520__ $$aMost sediment transport equations overestimate the bedload transport rate by several times when applied to mountain rivers. This is due to the fact that the presence of large relatively immobile boulders, which disrupt the flow, is generally not taken into account. Sediment transport in steep channels with boulders was herein investigated using 41 laboratory experiments carried out on a tilting flume for three slopes (S = 6.7%, 9.9%, and 13%). Sediment transport, mean flow velocities and morphology-describing variables were measured regularly during the experiments. The sediment transport capacity is clearly decreasing with dimensionless boulder distance and is better estimated in terms of critical discharge for incipient motion of mobile sediments than in terms of bed shear stress. A sediment transport formula based on excess discharge relative to a critical value, which depends not only on the channel slope but also on the boulder spatial density, is herein developed.
000202023 6531_ $$asediment transport
000202023 6531_ $$aboulders
000202023 6531_ $$asteep channel
000202023 6531_ $$aflume experiments
000202023 700__ $$0242669$$aGhilardi, Tamara$$g163150
000202023 700__ $$0246576$$aFranca, Mário J.$$g151418
000202023 700__ $$0241228$$aSchleiss, Anton$$g112841
000202023 7112_ $$aRiver Flow 2014$$cLausanne, Switzerland$$dSeptember, 3-5, 2014
000202023 720_1 $$0241228$$aSchleiss, Anton$$eed.$$g112841
000202023 720_1 $$0240404$$aDe Cesare, Giovanni$$eed.$$g101010
000202023 720_1 $$0246576$$aFranca, Mário J.$$eed.$$g151418
000202023 720_1 $$0244418$$aPfister, Michael$$eed.$$g202221
000202023 773__ $$q899-907$$tProceedings of River Flow 2014
000202023 8564_ $$s346663$$uhttps://infoscience.epfl.ch/record/202023/files/2014-987%20Sediment%20transport%20in%20steep%20channels%20with%20large%20roughness%20elements.pdf$$yn/a$$zn/a
000202023 909C0 $$0252079$$pLCH$$xU10263
000202023 909C0 $$0255473$$pPL-LCH$$xU10263
000202023 909CO $$ooai:infoscience.tind.io:202023$$pconf$$pENAC$$qGLOBAL_SET
000202023 917Z8 $$x246105
000202023 917Z8 $$x246105
000202023 917Z8 $$x202221
000202023 937__ $$aEPFL-CONF-202023
000202023 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000202023 980__ $$aCONF