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Time-dependent behavior of a placed bed of cohesive sediment subjected to erosion and deposition cycles

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Abstract

This study aims to explore the behavior of a cohesive sediment bed that undergoes cycles of erosion and deposition under diluted conditions. A bed of bentonite (montmorillonite) sediment was placed in two annular flumes and subjected to daily erosion tests for a period of 80 days, mimicking intermittent moderate-energy disturbances like tidal currents and wind waves. After each erosion test, the suspended sediment was allowed to settle back in the flumes. The amount of suspended sediment measured at the top of the water column at the end of each erosion test decreased in the first 5 days, concurrently with an increase in the bulk-settling velocity near the bed. This pattern is explained by turbulence-induced flocculation of clay particles and consequent formation of a surface floc layer. After about 20 days, the amount of suspended sediment measured at the top of the water column at the end of each erosion test increased and the settling velocity decreased, whereas the suspended sediment concentration measured near the bed remained nearly constant. We explain such trend by the cumulative release of slow-settling particles from the bed. This experiment suggests that the superficial layer of a placed bed that is periodically eroded and redeposited experiences competing processes: the sediment that is resuspended at every cycle becomes less erodible, but prolonged exposure to shear stress increases the pool of eroded sediment over time. The total amount of resuspended sediment seems to become constant after several tens of cycle, suggesting that the release of particles from the bed by cumulative erosion is balanced by the binding of such particles to the bed.

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References

  • Amos CL, Mosher DC (1985) Erosion and deposition of fine-grained sediments from the Bay of Fundy. Sedimentology 32(6):815–832. doi:10.1111/j.1365-3091.1985.tb00735.x

    Article  Google Scholar 

  • Amos CL, Grant J, Daborn GR, Black K (1992) Sea carousel—a benthic, annular flume. Estuar Coast Shelf Sci 34(6):557–577. doi:10.1016/S0272-7714(05)80062-9

    Article  Google Scholar 

  • Amos CL, Feeney T, Sutherland TF, Luternauer JL (1997) The stability of fine-grained sediments from the Fraser river delta. Estuar Coast Shelf Sci 45(4):507–524. doi:10.1006/ecss.1996.0193

    Article  Google Scholar 

  • Droppo I, Stone M (1994) In-channel surficial fine-grained sediment laminae.1. Physical characteristics and formational processes. Hydrol Process 8(2):101–111. doi:10.1002/hyp.3360080202

    Article  Google Scholar 

  • Droppo IG, Lau YL, Mitchell C (2001) The effect of depositional history on contaminated bed sediment stability. Sci Total Environ 266(1–3):7–13

    Article  Google Scholar 

  • Einsele G, Overbeck R, Schwarz HU, Unsöld G (1974) Mass physical properties, sliding and erodibility of experimentally deposited and differently consolidated clayey muds (approach, equipment, and first results). Sedimentology 21(3):339–372. doi:10.1111/j.1365-3091.1974.tb02065.x

    Article  Google Scholar 

  • Friedrichs CT (2011) Tidal flat morphodynamics: a synthesis. In: Wolanski E, McLusky D (eds) Treatise on estuarine and coastal science. Academic, Waltham, pp 137–170

    Chapter  Google Scholar 

  • Fugate DC, Friedrichs CT (2002) Determining concentration and fall velocity of estuarine particle populations using ADV, OBS and LISST. Cont Shelf Res 22(11):1867–1886. doi:10.1016/S0278-4343(02)00043-2

    Article  Google Scholar 

  • Fugate DC, Friedrichs CT (2003) Controls on suspended aggregate size in partially mixed estuaries. Estuar Coast Shelf Sci 58(2):389–404. doi:10.1016/S0272-7714(03)00107-0

    Article  Google Scholar 

  • Hawley N (1981) Mud consolidation during a short time interval. Geo-Mar Lett 1(1):7–10. doi:10.1007/BF02463294

    Article  Google Scholar 

  • Healy T, Wang Y, Healy J-A (2002) Muddy coasts of the world: processes, deposits and function, proceedings in marine science 4. Elsevier Science, Amsterdam

    Google Scholar 

  • Krone RB (1962) Flume studies of the transport of sediment in estuarial shoaling processes. Final report. Hydraulic Engineering Laboratory and Sanitary Engineering Research Laboratory, University of California, Berkeley

    Google Scholar 

  • Lau YL, Droppo IG (2000) Influence of antecedent conditions on critical shear stress of bed sediments. Water Res 34(2):663–667. doi:10.1016/S0043-1354(99)00164-5

    Article  Google Scholar 

  • Linten DG, Sills GC, Feates N, Roberts W (2002) Erosion properties of mud beds deposited in laboratory settling columns. In: Proceedings in Marine Science, vol. 5, Johan C. Winterwerp and Cees Kranenburg (eds), pp. 343–357, Elsevier

  • Mariotti G, Fagherazzi S (2012a), Channels-tidal flat sediment exchange: the channel spillover mechanism. J Geophys Res Oceans, 117(C3):doi:10.1029/2011JC007378

  • Mariotti G, Fagherazzi S (2012b) Modeling the effect of tides and waves on benthic biofilms. J Geophys Res Biogeosciences, 117(G4):doi:10.1029/2012JG002064

  • Mehta AJ, Partheniades E (1982) Resuspension of deposited cohesive sediment beds. Coast Eng Proc, 1(18):doi:10.9753/icce.v18

  • Parchure T, Mehta A (1985) Erosion of soft cohesive sediment deposits. J Hydraul Eng 111(10):1308–1326. doi:10.1061/(ASCE)0733-9429(1985)111:10(1308)

    Article  Google Scholar 

  • Sanford LP, Maa JP-Y (2001) A unified erosion formulation for fine sediments. Mar Geol 179(1–2):9–23. doi:10.1016/S0025-3227(01)00201-8

    Article  Google Scholar 

  • Schieber J, Southard J, Thaisen K (2007) Accretion of mudstone beds from migrating floccule ripples. Science 318(5857):1760–1763. doi:10.1126/science.1147001

    Article  Google Scholar 

  • Stapleton KR, Huntley DA (1995) Seabed stress determinations using the inertial dissipation method and the turbulent kinetic energy method. Earth Surf Process Landf 20(9):807–815. doi:10.1002/esp.3290200906

    Article  Google Scholar 

  • Thompson CEL, Amos CL, Jones TER, Chaplin J (2003) The manifestation of fluid-transmitted bed shear stress in a smooth annular flume. A comparison of methods. J Coast Res 19(4):1094–1103. doi:10.2307/4299251

    Google Scholar 

  • Valentine K, Mariotti G, Fagherazzi S (2014) Repeated erosion of cohesive sediments with biofilms. Adv Geosci 39:9–14

  • Van Prooijen BC, Winterwerp JC (2010) A stochastic formulation for erosion of cohesive sediments. J Geophys Res Oceans, 115(C1):doi:10.1029/2008JC005189

  • Widdows J, Brown S, Brinsley MD, Salkeld PN, Elliott M (2000) Temporal changes in intertidal sediment erodability: influence of biological and climatic factors. Cont Shelf Res 20(10–11):1275–1289. doi:10.1016/S0278-4343(00)00023-6

    Article  Google Scholar 

  • Winterwerp JC (1998) A simple model for turbulence induced flocculation of cohesive sediment. J Hydraul Res 36(3):309–326. doi:10.1080/00221689809498621

    Article  Google Scholar 

  • Winterwerp JC, Cornelisse JM, Kuijper C (1993) A laboratory study on the behavior of mud from the western Scheldt under tidal conditions, in nearshore and estuarine cohesive sediment transport. In: Mehta AJ (ed) American geophysical union, Washington, D. C.. doi:10.1029/CE042p0295

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Acknowledgments

We would like to thank Dr. Wally Fulweiler, Amanda Vieillard, and Tammy Viggato for their help. This research was supported by the NSF awards OCE-0924287, DEB-0621014 (VCR-LTER program), and OCE-1238212 (PIE-LTER program).

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Authors and Affiliations

  1. Department of Earth and Environment, Boston University, Boston, MA, 02215, USA

    G. Mariotti, K. Valentine & S. Fagherazzi

  2. Department of Earth and Environmental Sciences, Boston College, Chestnut Hill, MA, 02467, USA

    K. Valentine

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  1. G. Mariotti
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  2. K. Valentine
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  3. S. Fagherazzi
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Correspondence to G. Mariotti.

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Responsible Editor: Lawrence P. Sanford

This article is part of the Topical Collection on the 12th International Conference on Cohesive Sediment Transport in Gainesville, Florida, USA, 21–24 October 2013

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Mariotti, G., Valentine, K. & Fagherazzi, S. Time-dependent behavior of a placed bed of cohesive sediment subjected to erosion and deposition cycles. Ocean Dynamics 65, 287–294 (2015). https://doi.org/10.1007/s10236-014-0798-2

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  • DOI: https://doi.org/10.1007/s10236-014-0798-2

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