Fluvial dunes: Initiation, characterization, flow structure

Earth Surface Processes and Landforms

Volumn 36, Issue 1, 2011, Pages 39-57

  Coleman, S E ^a   Nikora, V I ^b  

^a UNIVERSITY OF AUCKLAND   (New Zealand)

^b UNIVERSITY OF ABERDEEN   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

BED MORPHOLOGY; FIELD INVESTIGATION; INTRIGUING QUESTIONS; METHODOLOGICAL APPROACH; RESEARCH EFFORTS; RIVER SEDIMENTS; SEDIMENT WAVES;

LOCOMOTIVES; RAILROAD CARS; SEDIMENTOLOGY; TURBULENT FLOW;

RESEARCH;

BEDLOAD; CHANNEL MORPHOLOGY; DUNE; FLOW FIELD; FLOW STRUCTURE; FLUVIAL DEPOSIT; SEDIMENT TRANSPORT; SUSPENDED SEDIMENT;

EID: 78650450645     PISSN: 01979337     EISSN: 10969837     Source Type: Journal    
DOI: 10.1002/esp.2096     Document Type: Article

References (167)

1. Aberle J, Nikora V, Henning M, Ettmer B, Hentschel B. 2010. Statistical characterization of bed roughness due to bed forms: a field study in the Elbe River at Aken, Germany. Water Resources Research 46, W03521. DOI:10.1029/2008WR007406
2. Albertson ML, Simons DB, Richardson EV. 1958. Discussion of 'Mechanics of sediment-ripple formation' by H.-K. Liu. Journal of the Hydraulics Division ASCE 84: Paper 1558, 23-31.
3. Amsler ML, García MH. 1997. Discussion of 'Sand-dune geometry of large rivers during floods' by P. Y. Julien and G. J. Klaassen. Journal of Hydraulic Engineering ASCE 123: 582-584.
4. ASCE Task Force on Bed Forms in Alluvial Channels of the Committee on Sedimentation. 1966. Nomenclature for bed forms in alluvial channels. Journal of the Hydraulics Division ASCE 92(HY3): 51-64.
5. ASCE Task Committee on Flow and Transport over Dunes. 2002. Flow and transport over dunes. Journal of Hydraulic Engineering ASCE 128: 726-728.
6. Ashida K, Tanaka Y. 1967. A statistical study of sand waves. Proceedings of XII Congress of the International Association of Hydraulic Research 2: 103-110.
7. Ashley GM. 1990. Classification of large-scale subaqueous bedforms: a new look at an old problem. Journal of Sedimentary Petrology 60: 160-172.
8. Baas JH. 1993. Dimensional analysis of current ripples in recent and ancient depositional environments. Geologica Ultraiectina, 106, Faculteit Aardwetenschappen der Rijksuniversiteit, Utrecht, The Netherlands.
9. Baas JH. 1994. A flume study on the development and equilibrium morphology of current ripples in very fine sand. Sedimentology 41: 185-209.
10. Bagnold RA. 1956. The flow of cohesionless grains in fluids. Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences 249: 235-297.
11. Bartholdy J, Flemming BW, Ernstsen VB, Winter C, Bartholomä A. 2010. Hydraulic roughness over simple subaqueous dunes. Geo-Marine Letters 30: 63-76.
12. Bennett SJ, Best JL. 1995. Mean flow and turbulence structure over fixed two-dimensional dunes: implications for sediment transport and bedform stability. Sedimentology 42: 491-513.
13. Bennett SJ, Best JL. 1996. Mean flow and turbulence structure over fixed ripples and the ripple-dune transition. In Coherent Flow Structures in Open Channels, Ashworth PJ, Bennett SJ, Best JL, McLelland SJ (eds). John Wiley & Sons: Chichester, UK; 281-304.
14. Best JL. 1992. On the entrainment of sediment and initiation of bed defects: insights from recent development within turbulent boundary layer research. Sedimentology 39: 797-811.
15. Best J. 2005a. The fluid dynamics of river dunes: a review and some future research directions. Journal of Geophysical Research 110. F04S02 doi:10.1029/2004JF000218.
16. Best JL. 2005b. Kinematics, topology and significance of dune-related macroturbulence: Some observations from the laboratory and field. In Fluvial Sedimentology VII, Blum MD, Marriott SB, Leclair SF (eds). Special Publications of the International Association Sedimentologists 35: 41-60.
17. Bogardi JL. 1965. European concepts of sediment transportation. Journal of the Hydraulics Division ASCE 91(HY1): 29-54.
18. Bradshaw P, Wong FYF. 1972. The reattachment and relaxation of a turbulent shear layer. Journal of Fluid Mechanics 52: 113-135.
19. Butler JB, Lane SN, Chandler JH. 2001. Characterization of the structure of river-bed gravels using two-dimensional fractal analysis. Mathematical Geology 33: 301-330.
20. Cameron SM, Nikora VI. 2008. Eddy convection velocity for smooth- and rough-bed open-channel flows: particle image velocimetrystudy. Proceedings of River Flow 2008, Izmir, Turkey, September 3-5; 143-150.
21. Cellino M, Graf WH. 2000. Experiments on suspension flow in open channels with bed forms. Journal of Hydraulic Research IAHR 38: 289-298.
22. Clunie TM, Nikora VI, Coleman SE, Friedrich H, Melville BW. 2007. Flow measurement using flying ADV probes. Journal of Hydraulic Engineering ASCE 133: 1345-1355.
23. Coleman SE. 1991. The mechanics of alluvial stream bed forms. PhD thesis, Auckland, The University of Auckland.
24. Coleman SE, Eling B. 2000. Sand wavelets in laminar open-channel flows. Journal of Hydraulic Research IAHR 38: 331-338.
25. Coleman SE, Fedele JJ, García MH. 2003. Closed-conduit bedform initiation and development. Journal of Hydraulic Engineering ASCE 129: 956-965.
26. Coleman SE, Fenton JD. 2000. Potential-flow instability theory and alluvial stream bed forms. Journal of Fluid Mechanics 418: 101-117.
27. Coleman SE, Melville BW. 1994. Bed-form development. Journal of Hydraulic Engineering ASCE 120: 544-560.
28. Coleman SE, Melville BW. 1996. Initiation of bed forms on a flat sand bed. Journal of Hydraulic Engineering ASCE 122: 301-310.
29. Coleman SE, Melville BW. 2001. Case study: New Zealand bridge scour experiences. Journal of Hydraulic Engineering ASCE 127: 535-546.
30. Coleman SE, Nikora VI. 2008. A unifying framework for particle entrainment. Water Resources Research 44. W04415. DOI:10.1029/2007WR006363.
31. Coleman SE, Nikora VI. 2009a. Bed and flow dynamics leading to sediment-wave initiation. Water Resources Research 45. W04402. DOI:10.1029/2007WR006741.
32. Coleman SE, Nikora VI. 2009b. Exner equation: a continuum approximation of a discrete granular system. Water Resources Research 45. W09421. DOI:10.1029/2008WR007604.
33. Coleman SE, Nikora VI, McLean SR, Clunie TM, Melville BW. 2007b. Subelement form-drag parameterization in rough-bed flows. Journal of Hydraulic Engineering ASCE 133: 121-129.
34. Coleman SE, Nikora VI, McLean SR, Clunie TM, Schlicke T, Melville BW. 2006. Equilibrium hydrodynamics concept for developing dunes. Physics of Fluids 18: 105104-1-12.
35. Coleman SE, Nikora VI, McLean SR, Schlicke E. 2007a. Spatially averaged turbulent flow over square ribs. Journal of Engineering Mechanics ASCE 133: 194-204.
36. Coleman SE, Nikora VI, Melville BW, Goring DG, Clunie TM, Friedrich H. 2008a. SWAT.nz: New-Zealand-based 'Sand waves and turbulence' experimental programme. Acta Geophysica 56: 417-439.
37. Coleman SE, Nikora VI, Schlicke T. 2008b. Spatially-averaged oscillatory flow over a rough bed. Acta Geophysica 56: 698-733.
38. Coleman SE, Zhang MH, Clunie TM. 2005. Sediment-wave development in subcritical water flow. Journal of Hydraulic Engineering ASCE 131: 106-111.
39. Colombini M. 2004. Revisiting the linear theory of sand dune formation. Journal of Fluid Mechanics 502: 1-16.
40. Cornish V. 1901. On sand-waves in tidal currents. The Geographical Journal 18: 170-200.
41. Costello WR, Southard JB. 1981. Flume experiments on lower-flow-regime bedforms in coarse sand. Journal of Sedimentary Petrology 51: 849-864.
42. Crickmore MJ. 1970. Effect of flume width on bed-form characteristics. Journal of the Hydraulics Division ASCE 96(HY2) 473-496.
43. Davies TRH. 1980. Bedform spacing and flow resistance. Journal of the Hydraulics Division ASCE 106(HY3): 423-433.
44. Davies TRH. 1982. Lower flow regime bedforms: rational classification. Journal of the Hydraulics Division ASCE 108(HY3): 343-360.
45. Ditchfield R, Best J. 1992. Discussion of 'Development of bed features' by A. Raudkivi and H-H Witte. Journal of Hydraulic Engineering ASCE 118: 647-650.
46. Drake TG, Shreve RL, Dietrich WE, Whiting PJ, Leopold LB. 1988. Bedload transport of fine gravel observed by motion-picture photography. Journal of Fluid Mechanics 192: 193-217.
47. Engelund FA. 1970. Instability of erodible beds. Journal of Fluid Mechanics 42: 225-244.
48. Engelund FA, Fredsøe J. 1971. A mathematical model of flow over dunes. Progress Report 22, Institute of Hydrodynamics and Hydraulic Engineering ISVA, Technology University of Denmark, Lyngby, Denmark; 25-30.
49. Engelund F, Fredsøe J. 1982. Sediment ripples and dunes. Annual Review of Fluid Mechanics 14: 13-37.
50. Engelund F, Hansen E. 1967. A Monograph on Sediment Transport in Alluvial Streams. Teknisk Forlag: Copenhagen, Denmark.
51. Fernandez R, Best J, López F. 2006. Mean flow, turbulence structure, and bed form superimposition across the ripple-dune transition. Water Resources Research 42. W05406. DOI:10.1029/2005WR004330.
52. Finnigan JJ. 2000. Turbulence in plant canopies. Annual Review of Fluid Mechanics 32: 519-571.
53. Flemming BW. 2000. The role of grain size, water depth and flow velocity as scaling factors controlling the size of subaqueous dunes. Proceedings of Marine Sandwave Dynamics, 23-24 March, Lille, France; 55-61.
54. Fredsøe J. 1974. On the development of dunes in erodible channels. Journal of Fluid Mechanics 64: 1-16.
55. Fredsøe J. 1986. Shape and dimensions of dunes in open channel flow. In Physics of Desertification, El-baz F, Hassan MHA (eds). Martinus Nijhoff Publishers: Dordrecht; 385-397.
56. Fredsøe J. 1996. The stability of a sandy river bed. In Issues and Directions in Hydraulics, Nakato T, Ettema R (eds). A. A. Balkema: Rotterdam; 99-114.
57. García MH. 2008. Sediment transport and morphodynamics. In Sedimentation Engineering: Processes, Measurements, Modeling, and Practice García MH (ed). Manuals and Reports on Engineering Practice No. 110, ASCE: Reston, VA, USA.
58. Giménez-Curto LA, Corniero Lera MA. 1996. Oscillating turbulent flow over very rough surfaces. Journal of Geophysics Research 101(C9): 20, 745-20, 758.
59. Gomez B, Naff RL, Hubbell DW. 1989. Temporal variations in bedload transport rates associated with the migration of bedforms. Earth Surfaces and Processes Landforms 14: 135-156.
60. Goring D, Nikora V, McEwan I. 1999. Analysis of the texture of gravel beds using 2-D structure functions. In River, Coastal, and Estuarine Morphodynamics, Proceedings of IAHR Symposium 2, Genova, Italy, 111-120.
61. Gradowczyk MH. 1970. Wave propagation and boundary instability in erodible-bed channels. Journal of Fluid Mechanics 33: 93-112.
62. Grigoriadis DGE, Balaras E, Dimas AA. 2009. Large-eddy simulations of unidirectional water flow over dunes. Journal of Geophysics Research 114, F02022, DOI:10.1029/2008JF001014.
63. Grinvald DI, Nikora VI. 1988. River Turbulence. Hydrometeoizdat, Leningrad, Russia (in Russian).
64. Gyr A, Kinzelbach W. 2004. Bed forms in turbulent channel flow. Applied Mechanics Review 57: 77-93.
65. Gyr A, Schmid A. 1989. The different ripple formation mechanism. Journal of Hydraulic Research 27: 61-74.
66. Haque MI, Mahmood K. 1985. Analytical study on steepness of ripples and dunes. Journal of Hydraulic Engineering ASCE 112: 220-236.
67. Hino M. 1968. Equilibrium-range spectra of sand waves formed by flowing water. Journal of Fluid Mechanics 34: 565-573.
68. Hoekstra P, Bell P, van Santen P, Roode N, Levoy F, Whitehouse R. 2004. Bedform migration and bedload transport on an intertidal shoal. Continental Shelf Research 24: 1249-1269.
69. Holmes RR Jr. 2003. Vertical velocity distributions in sand-bed alluvial rivers. PhD thesis. The University of Illinois, Illinois, USA.
70. Hyun BS, Balachandar R, Yu K, Patel VC. 2003. Assessment of PIV to measure mean velocity and turbulence in open-channel flow. Experiments in Fluids 35: 262-267.
71. Inglis CC. 1949. The behaviour and control of rivers and canals (with the aid of models). Research Publication 13, Central Waterpower lrrigation and Navigation Research Station, Poona, India.
72. Jackson RG. 1976. Sedimentological and fluid-dynamic implications of the turbulent bursting phenomenon in geophysical flows. Journal of Fluid Mechanics 77: 531-560.
73. Jain SC, Kennedy JF. 1974. The spectral evolution of sedimentary bed forms. Journal of Fluid Mechanics 63: 301-314.
74. James TD, Carbonneau PE, Lane SN. 2007. Investigating the effects of DEM error in scaling analysis. Photogrammetric Engineering & Remote Sensing, American Society for Photogrammetry and Remote Sensing, 73: 067-078.
75. Jerolmack DJ, Mohrig D, McElroy B. 2006. A unified description of ripples and dunes in rivers. 4th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, Urbana, Illinois, USA, 4-7 October 2005, 843-851.
76. Jerolmack DJ, Mohrig D. 2005. A unified model for subaqueous bed form dynamics. Water Resources Research 41. W12421 doi:10.1029/2005WR004329.
77. Jones DF. 1968. An experimental study of the distribution of boundary shear stress and its influence on dune formation and growth. MSc thesis, University of Washington, Seattle, WA.
78. Julien PY, Klaassen GJ. 1995. Sand-dune geometry of large rivers during floods. Journal of Hydraulic Engineering ASCE 121: 657-663.
79. Kadota A, Nezu I. 1999. Three-dimensional structure of space-time correlation on coherent vortices generated behind dune crest. Journal of Hydraulic Research IAHR 37: 59-80.
80. Karim F. 1995. Bed configuration and hydraulic resistance in alluvial-channel flows. Journal of Hydraulic Engineering ASCE 121: 15-25.
81. Kennedy JF. 1969. The formation of sediment ripples, dunes and antidunes. Annual Review of Fluid Mechanics 1: 147-168.
82. Kennedy JF. 1980. Bed forms in alluvial streams: some views on current understanding and identification of unresolved problems. In Application of Stochastic Processes in Sediment Transport, Shen HW, Kikkawa H (eds). Water Resources Publications: Littleton, Colo., 6a/1-6a/13.
83. Kleinhans MG. 2004. Sorting in grain flows at the lee side of dunes. Earth Science Review 65: 75-102.
84. Kondrat'ev NE, Lyapin AN, Popov IV, Pin'kovskii SI, Fedorov NN, Yakunin II. 1959. Channel Processes. Leningrad: Gidrometeoizdat.
85. Kostaschuk R, Shugar D, Best J, Parsons D, Lane S, Hardy R, Orfeo O. 2009. Suspended sediment transport and deposition over a dune: Río Paraná, Argentina. Earth Surface Processes and Landforms 34: 1605-1611.
86. Kühlborn JM. 1993. Wachstum und Wanderung von Sedimentriffeln. PhD thesis, Technischen Hochschule Darmstadt, Darmstadt, Germany.
87. Kuru WC, Leighton DT, McCready MJ. 1995. Formation of waves on a horizontal erodible bed of particles. International Journal of Multiphase Flow 21: 1123-1140.
88. Langbein WB, Leopold LB. 1968. River channel bars and dunes - theory of kinematic waves. US Department of the Interior Geological Survey Professional Paper 422-L, US Government Printing Office, Washington, USA.
89. Liu H-K. 1957. Mechanics of sediment-ripple formation. Journal of the Hydraulics Division ASCE 83: Paper 1197.
90. López F, García MH. 2001. Mean flow and turbulence structure of open-channel flow through nonemergent vegetation. Journal of Hydraulic Engineering ASCE 127: 392-402.
91. Lyn, DA. 1993. Turbulence measurements in open-channels flows over artificial bedforms. Journal of Hydraulic Engineering ASCE 119: 306-326.
92. Maddux TB, McLean SR, Nelson JM. 2003b. Turbulent flow over three-dimensional dunes: 2. Fluid and bed stresses. Journal of Geophysical Research 108(F1). doi:10.1029/2003/JF000018.
93. Maddux TB, Nelson JM, McLean SR. 2003a. Turbulent flow over three-dimensional dunes: 1. Free surface and flow response. Journal of Geophysical Research 108(F1). doi:10.1029/2003/JF000017.
94. McElroy B, Mohrig D, Blom A. 2008. Determining characteristic scales for the dynamics and geometry of sandy bedforms. Proceedings of the Marine and River Dune Dynamics, Leeds, UK, April 1-3; 219-225.
95. McLean SR. 1990. The stability of ripples and dunes. Earth-Science Review 29: 131-144.
96. McLean SR, Nelson JM, Gary L. 2008a. Suspended sediment in the presence of dunes. In River, Coastal and Estuarine Morphodynamics: RCEM 2007, Dohmen-Janssen CM, Hulscher SJMH (eds). Taylor & Francis Group: London; 611-618.
97. McLean SR, Nelson JM, Wolfe SR. 1994. Turbulence structure over two-dimensional bed forms: implications for sediment transport. Journal of Geophysical Research 99: 12729-12747.
98. McLean SR, Nikora VI. 2006. Characteristics of turbulent unidirectional flow over rough beds: double-averaging perspective with particular focus on sand dunes and gravel beds. Water Resources Research 42. W10409. DOI:10.1029/2005WR004708.
99. McLean SR, Nikora VI, Coleman SE. 2008b. Double-averaged velocity profiles over fixed dune shapes. Acta Geophysica 56: 669-697.
100. McLean SR, Smith JD. 1986. A model for flow over two-dimensional bed forms. Journal of Hydraulic Engineering ASCE 112: 300-317.
101. McLean SR, Wolfe SR, Nelson JM. 1999. Spatially averaged flow over a wavy boundary revisited. Journal of Geophysical Research 104: 15743-15753.
102. Mohrig D, Smith JD. 1996. Predicting the migration rates of subaqueous dunes. Water Resources Research 32: 3207-3217.
103. Moll JR, Schilperoort T, de Leeuw AJ. 1987. Stochastic analysis of bedform dimensions. Journal of Hydraulic Research IAHR 25: 465-479.
104. Nakagawa H, Tsujimoto T. 1984. Spectral analysis of sand bed instability. Journal of Hydraulic Engineering ASCE 110: 467-483.
105. Nelson JM, McLean SR, Wolfe SR. 1993. Mean flow and turbulence fields over two-dimensional bed forms. Water Resources Research 29: 3935-3953.
106. Nelson JM, Shreve RL, McLean SR, Drake TG. 1995. Role of near-bed turbulence structure in bed load transport and bed form mechanics. Water Resources Research 31: 2071-2086.
107. Nikora VI. 1982. Statistical peculiarities of river bed microforms. In Problems of Surface Hydrology. Hydrometeoizdat: Leningrad; 143-151 (in Russian).
108. Nikora VI, Goring, DG. 2000. Sand waves in unidirectional flows: scaling and intermittency. Physics of Fluids, AIP 12: 703-706.
109. Nikora VI, Hicks DM. 1997. Scaling relationships for sand wave development in unidirectional flow. Journal of Hydraulic ASCE 123: 1152-1156.
110. Nikora VI, McEwan IK, McLean SR, Coleman SE, Pokrajac D, Walters R. 2007a. Double-averaging concept for rough-bed open-channel and overland flows: Theoretical background. Journal of Hydraulic Engineering ASCE 133: 873-883.
111. Nikora V, McLean S, Coleman S, Pokrajac D, McEwan I, Campbell L, Aberle J, Clunie D, Koll K. 2007b. Double-averaging concept for rough-bed open-channel and overland flows: applications. Journal of Hydraulic Engineering ASCE 133: 884-895.
112. Nikora VI, Sukhodolov AN, Rowinski PM. 1997. Statistical sand wave dynamics in one-directional water flows. Journal of Fluid Mechanics 351: 17-39.
113. Niño Y, Atala A, Barahona M, Aracena D. 2002. Discrete particle model for analysing bedform development. Journal of Hydraulic Engineering ASCE 128: 381-389.
114. Nordin CF. 1971. Statistical properties of dune profiles. US Geological Survey Professional Paper 562F.
115. Nordin CF, Algert JH. 1966. Spectral analysis of sand waves. Journal of the Hydraulics Division ASCE 92(HY5): 95-114.
116. Ogink HJM. 1984. Hydraulic roughness of the Rhine and Waal Rivers. Delft Hydraulics Laboratory, Report R2017.
117. Parsons DR, Best JL, Orfeo O, Hardy RJ, Kostaschuk R, Lane SN. 2005. Morphology and flow fields of three-dimensional dunes, Río Paraná, Argentina: results from simultaneous multibeam echo sounding and acoustic Doppler current profiling. Journal of Geophysical Research 110, F04S03, doi:10.1029/2004JF000231.
118. Perry AE, Chong MS. 1982. On the mechanism of wall turbulence. Journal of Fluid Mechanics 119: 173-217.
119. Perry AE, Henbest S, Chong MS. 1986. A theoretical and experimental study of wall turbulence. Journal of Fluid Mechanics 165: 163-199.
120. Plate E. 1967. Discussion of 'Spectral analysis of sand waves' by C.F. Nordin and J.H. Algert. Journal of the Hydraulics Division ASCE 93(HY4): 310-316.
121. Plate E. 1971. Limitations of spectral analysis in the study of wind generated water surface waves. Proceedings of the International Symposium on Stochastic Hydraulics. Pittsburgh University Press: Pittsburgh, PA; 522-539.
122. Raudkivi AJ. 1963. Study of sediment ripple formation. Journal of the Hydraulics Division ASCE 89(HY6): 15-33.
123. Raudkivi AJ. 1966. Bed forms in alluvial channels. Journal of Fluid Mechanics 26: 507-514.
124. Raudkivi AJ. 1983. Thoughts on ripples and dunes. Journal of Hydraulic Research IAHR 21: 315-321.
125. Raudkivi AJ. 1997. Ripples on stream bed. Journal of Hydraulic Engineering ASCE 123: 58-64.
126. Raudkivi AJ. 1998. Loose Boundary Hydraulics. 4th edn. Pergamon Press, Inc.: New York.
127. Raudkivi A, Witte H-H. 1990. Development of bed features. Journal of Hydraulic Engineering ASCE 116: 1063-1079.
128. Raupach MR, Antonia RA, Rajagopalan S. 1991. Rough-wall turbulent boundary layers. Applied Mechanical Reviews ASME 44: 1-25.
129. Richards KJ. 1980. The formation of ripples and dunes on an erodible bed. Journal of Fluid Mechanics 99: 597-618.
130. Robert A, Richards KS. 1988. On the modelling of sand bedforms using the semivariogram. Earth Surface Processes and Landforms 13: 459-473.
131. Robert A, Uhlman W. 2001. An experimental study on the ripple-dune transition. Earth Surface Processes and Landforms 26: 615-629.
132. Schindler RJ, Robert A. 2004. Suspended sediment concentration and the ripple-dune transition. Hydrological Processes 18: 3215-3227.
133. Schindler RJ, Robert A. 2005. Flow and turbulence structure across the ripple-dune transition: an experiment under mobile bed conditions. Sedimentology 52: 627-649.
134. Shugar DH, Kostaschuk R, Best JL, Parsons DR, Lane SN, Orfeo O, Hardy RJ. 2010. On the relationship between flow and suspended sediment transport over the crest of a sand dune, Río Paraná, Argentina. Sedimentology 57: 252-272.
135. Simons DB, Richardson EV. 1960. Resistance to flow in alluvial channels. Journal of the Hydraulics Division ASCE 86(HY5): 73-99.
136. Simons DB, Richardson EV, Nordin CF. 1965. Bedload equation for ripples and dunes. Professional Paper 462-H, U.S. Geological Survey.
137. Sirovich L, Karlsson S. 1997. Turbulent drag reduction by passive mechanism. Nature 388: 753-755.
138. Smith JD. 1970. Stability of a sand bed subjected to a shear flow of low Froude number. Journal of Geophysical Research 75: 5928-5940.
139. Smith JD, McLean SR. 1977. Spatially averaged flow over a wavy surface. Journal of Geophysical Research 83: 1735-1746.
140. Southard JB, Boguchwal LA. 1990. Bed configurations in steady unidirectional water flows. Part 2. Synthesis of flume data. Journal of Sedimentary Petrology 60: 658-679.
141. Stoesser T, Braun C, García-Villalba M, Rodi W. 2008. Turbulence structures in flow over two-dimensional dunes. Journal of Hydraulic Engineering ASCE 134: 42-55.
142. Sumer BM, Bakioglu M. 1984. On the formation of ripples on an erodible bed. Journal of Fluid Mechanics 144: 177-190.
143. Taylor RH, Brooks NH. 1961. Discussion of 'Resistance to flow in alluvial channels', Simons DB, Richardson EV. Journal of the Hydraulics Division ASCE 87(HY1): 246-256.
144. Tison LJ. 1949. Origine des Ondes de Sable et des Bancs de Sable sous l'Action des Courants. Report II-13, 3rd Congress IAHR, Grenoble, France.
145. Tuijnder AP, Ribberink JS, Hulscher SJMH. 2009. An experimental study into the geometry of supply-limited dunes. Sedimentology 56: 1713-1727.
146. van der Mark CF, Blom A, Hulscher SJMH. 2008. Quantification of variability in bedform geometry. Journal of Geophysical Research 113, F03020, doi:10.1029/ 2007JF000940.
147. van der Mark CF, Blom A, Hulscher SJMH, Leclair SF, Mohrig D. 2006. On modeling the variability of bedform dimensions. 4th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, Urbana, Illinois, USA, 4-7 October; 831-841.
148. van Mierlo MCLM, de Ruiter JCC. 1988. Turbulence measurements above artificial dunes. Report Q789, Delft Hydraulics, the Netherlands.
149. van Rijn LC. (1984). Sediment transport, Part III: Bed forms and alluvial roughness. Journal of Hydrological Engineering ASCE 110: 1733-1754.
150. Vanoni VA, Brooks NH. 1958. Discussion of 'Mechanics of sediment-ripple formation' by H.-K. Liu. Journal of the Hydraulics Division ASCE 84(1): Paper 1558, 17-22.
151. Vanoni VA, Hwang L-S. 1967. Relation between bed forms and friction in streams. Journal of the Hydraulics Division ASCE 93(HY3): 121-144.
152. Velikanov MA. 1955. Dynamics of Alluvial Streams. Vol. II. Sediment and Bed Flow. State Publishing House for Theoretical and Technical Literature: Moscow.
153. Venditti JG. 2007. Turbulent flow and drag over fixed two- and three-dimensional dunes. Journal of Geophysical Research 112. F04008 doi:10.1029/2006JF000650.
154. Venditti JG, Bennett SJ. 2000. Spectral analysis of turbulent flow and suspended sediment transport over fixed dunes. Journal of Geophysical Research 105(C9): 22035-22047.
155. Venditti JG, Church MA, Bennett SJ. 2005. Bed form initiation from a flat sand bed. Journal of Geophysical Research 110. F01009 doi:10.1029/2004JF000149.
156. Venditti JG, Church M, Bennett SJ. 2006. On interfacial instability as a cause of transverse subcritical bed forms. Water Resources Research 42. W07423 doi:10.1029/2005WR004346.
157. Wang WC, Shen HW. 1980. Statistical properties of alluvial bed forms. Proceedings of the Third International Symposium on Stochastic Hydraulics, August 5-7, Tokyo, Japan; 371-389.
158. Watanabe K, Nagy HM, Hirano M. 1997. Classification of ripples and dunes in the lower flow regime. Proceedings of the 27th Congress of IAHR, San Francisco, California, USA, August 10-15; 991-996.
159. Williams PB, Kemp PH. 1971. Initiation of ripples on flat sediment beds. Journal of the Hydraulics Division ASCE 97: 505-522.
160. Willis JC, Kennedy JF. 1980. Sediment transport in migrating bedforms. In Application of Stochastic Processes in Sediment Transport by H.W. Shen and H. Kikkawa (eds). Water Resources Publications: Littleton, CO; 6b/1-6b/32.
161. Wilson NR, Shaw RH. 1977. A higher order closure model for canopy flow. Journal of Applied Meteorology 16: 1197-1205.
162. Yalin MS. 1972. Mechanics of Sediment Transport. Pergamon Press, Inc.: New York.
163. Yalin MS. 1977. On the determination of ripple length. Journal of the Hydraulics Division ASCE 103: 439-442.
164. Yalin MS. 1992. River Mechanics. Pergamon Press, Inc.: New York.
165. Yalin MS, da Silva AMF. 2001. Fluvial Processes. IAHR: Delft, The Netherlands.
166. Yue W, Lin C-L, Patel VC. 2005. Coherent structures in open-channel flows over a fixed dune. Journal of Fluids Engineering ASME 127: 858-864.
167. Yue W, Lin C-L, Patel VC. 2006. Large-eddy simulation of turbulent flow over a fixed two-dimensional dune. Journal of Hydrological Engineering ASCE 132: 643-651.