Fine-grained sediment dynamics during a strong storm event in the inner-shelf of the Gulf of Lion (NW Mediterranean)

doi:10.1016/J.CSR.2005.08.017

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Fine-grained sediment dynamics during a strong storm event in the inner-shelf of the Gulf of Lion (NW Mediterranean)

Journal Article•DOI•

Fine-grained sediment dynamics during a strong storm event in the inner-shelf of the Gulf of Lion (NW Mediterranean)

Bénédicte Ferré¹, Katell Guizien², X. Durrieu de Madron¹, Albert Palanques³, Jorge Guillén³, Antoine Grémare² - Show less +2 more•Institutions (3)

University of Perpignan¹, Centre national de la recherche scientifique², Spanish National Research Council³

01 Dec 2005-Continental Shelf Research (Pergamon)-Vol. 25, Iss: 19, pp 2410-2427

TL;DR: The fine-grained fraction flux is at least 2.5 times larger than the coarser fractions flux as mentioned in this paper, which is consistent with the grain size of material collected in sediment traps.

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About: This article is published in Continental Shelf Research.The article was published on 2005-12-01. It has received 82 citations till now. The article focuses on the topics: Sediment & Flux.

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Journal Article•DOI•

Suspended sediment fluxes and transport processes in the Gulf of Lions submarine canyons. The role of storms and dense water cascading

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Albert Palanques¹, Xavier Durrieu de Madron², Pere Puig¹, Joan Fabres³, Jorge Guillén¹, Antoni Calafat³, Miquel Canals³, Serge Heussner², Jérôme Bonnin² - Show less +5 more•Institutions (3)

Spanish National Research Council¹, University of Perpignan², University of Barcelona³

18 Dec 2006-Marine Geology

TL;DR: In this paper, suspended sediment transport was studied in seven submarine canyons of the Gulf of Lions (GoL) from 2003 to 2004 using turbidity sensors and current meters.

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269 citations

Cites background from "Fine-grained sediment dynamics duri..."

...…events are relatively infrequent and brief (less than 3 days) but these episodes are associated with the larger waves on the shelf, due to their long fetch, and occasionally with heavy rainfall and flash floods, due to the advection of humid marine air towards the continent (Ferré et al., 2005)....
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...Strong E and SE wind events are relatively infrequent and brief (less than 3 days) but these episodes are associated with the larger waves on the shelf, due to their long fetch, and occasionally with heavy rainfall and flash floods, due to the advection of humid marine air towards the continent (Ferré et al., 2005)....
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Journal Article•DOI•

Internal Waves, an Under-Explored Source of Turbulence Events in the Sedimentary Record

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Luis Pomar, Michele Morsilli¹, Pamela Hallock², Beatriz Bádenas³•Institutions (3)

University of Ferrara¹, University of South Florida², University of Zaragoza³

01 Feb 2012-Earth-Science Reviews

TL;DR: Internal waves propagate along weaker gradients (pycnoclines) within density-stratified fluids, behaving similarly to surface waves but typically at lower frequencies and larger amplitudes.

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212 citations

Journal Article•DOI•

Spatial and temporal variability of downward particle fluxes on a continental slope: Lessons from an 8-yr experiment in the Gulf of Lions (NW Mediterranean)

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Serge Heussner¹, Xavier Durrieu de Madron¹, A. Calafat², Miquel Canals², J. Carbonne¹, N. Delsaut¹, Gilles Saragoni¹ - Show less +3 more•Institutions (2)

University of Perpignan¹, University of Barcelona²

18 Dec 2006-Marine Geology

TL;DR: A long-term experiment of downward particle fluxes and currents was initiated in 1993 on the continental slope of the Gulf of Lions (NW Mediterranean) and pursued within the frame of several French and European projects (PNEC, Euromarge-NB, MTP II-MATER, EUROSTRATAFORM) as discussed by the authors.

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150 citations

Journal Article•DOI•

Suspended sediment transport in the Gulf of Lions (NW Mediterranean): Impact of extreme storms and floods

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Caroline Ulses¹, Claude Estournel¹, X. Durrieu de Madron², Albert Palanques³•Institutions (3)

University of Toulouse¹, University of Perpignan², Spanish National Research Council³

30 Aug 2008-Continental Shelf Research

TL;DR: In situ observations were combined with 3D modeling to gain understanding of and to quantify the suspended sediment transport in the Gulf of Lions (NW Mediterranean Sea) over a 6-month period (November 2003-May 2004) as mentioned in this paper.

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144 citations

Journal Article•DOI•

Trawling-induced resuspension and dispersal of muddy sediments and dissolved elements in the Gulf of Lion (NW Mediterranean)

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X. Durrieu de Madron¹, Bénédicte Ferré¹, G. Le Corre², Christian Grenz³, Pascal Conan³, Mireille Pujo-Pay³, Rosalyne Buscail¹, O. Bodiot¹ - Show less +4 more•Institutions (3)

University of Perpignan¹, IFREMER², Centre national de la recherche scientifique³

01 Dec 2005-Continental Shelf Research

TL;DR: A dedicated trawling experiment was performed at three sites on the Gulf of Lion continental shelf, with the aim of assessing the resuspension of particulate and dissolved matter triggered by different types of trawls on muddy sediments as discussed by the authors.

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137 citations

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References

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Journal Article•DOI•

A Sediment Transport Model for Straight Alluvial Channels

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Frank Engelund¹, Jørgen Fredsøe¹•Institutions (1)

Technical University of Denmark¹

01 Oct 1976-Hydrology Research

TL;DR: In this paper, a simple mathematical model for sediment transport in straight alluvial channels is presented, which is based on physical ideas related to those introduced by Bagnold (1954), was originally developed in two steps, the first describing the bed load transport and the second accounting for the suspended load.

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Abstract: The paper presents a simple mathematical model for sediment transport in straight alluvial channels. The model, which is based on physical ideas related to those introduced by Bagnold (1954), was originally developed in two steps, the first describing the bed load transport (Engelund 1975) and the second accounting for the suspended load (Fredsoe and Engelund 1976). The model is assumed to have two advantages as compared with empirical models, first it is based on a description of physical processes, secondly it gives some information about the quantity and size of the sand particles in suspension and the bed particles.

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657 citations

Journal Article•DOI•

Estuarine flocs: Their size, settling velocity and density

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Ronald J. Gibbs

20 Mar 1985-Journal of Geophysical Research

TL;DR: In this paper, the size and settling velocity of flocs of suspended sediments from the Chesapeake Bay were measured in laboratory experiments and in the field, and the relationship between floc diameter and the settling velocity indicated that the floe density decreased as the floes increased in size.

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Abstract: The size and settling velocity of flocs of suspended sediments from the Chesapeake Bay were measured in laboratory experiments and in the field. The curves between floc diameter and settling velocity showed a non-Stoke's relationship that was best described by the following: settling velocity (cm/s) = 1.73 (floc diameter, cm)0.78. Furthermore, the relationship between floc diameter and settling velocity indicated that the floe density decreased as the floes increased in size. In addition to changing density, a cylinder shape was found to be the best shape factor.

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233 citations

"Fine-grained sediment dynamics duri..." refers background in this paper

...This velocity corresponds to both the Stokes velocity for spherical grains of 30 mm and the settling velocity of fine-grained flocculates of about 200 mm, according to Gibbs (1985). Indeed, local observations by Durrieu de Madron et al....
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...Guillén et al. (2002) and Palanques et al....
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Journal Article•DOI•

Sediment resuspension and bed armoring during high bottom stress events on the northern California inner continental shelf: measurements and predictions

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Patricia L. Wiberg¹, David E. Drake², David A. Cacchione²•Institutions (2)

University of Virginia¹, United States Geological Survey²

01 Aug 1994

TL;DR: In this article, a limit on the depth of sediment availability is proposed as a correction to suspended sediment calculations, and reasonable attenuation values are computed with γ0 ≈ 0.002.

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Abstract: Geoprobe bottom tripods were deployed during the winter of 1990–1991 on the northern California inner continental shelf as part of the STRESS field experiment. Transmissometer measurements of light beam attenuation were made at two levels and current velocity was measured at four levels in the bottom 1.2 m of water. Intervals of high measured bottom wave velocity were generally correlated with times of both high attenuation and high attenuation gradient in the bottom meter of the water column. Measured time series of light attenuation and attenuation gradient are compared to values computed using a modified version of the Smith [(1977) The sea, Vol. 6, Wiley-Interscience, New York, pp. 539–577] steady wave-current bottom-boundary-layer model. Size-dependent transmissometer calibrations, which show significantly enhanced attenuation with decreasing grain size, are used to convert calculated suspended sediment concentration to light attenuation. The finest fractions of the bed, which are the most easily suspended and attenuate the most light, dominate the computed attenuation signal although they comprise only about 5–7% of the bed sediment. The calculations indicate that adjusting the value of the coefficient γ0 in the expression for near-bed sediment concentration cannot in itself give both the correct magnitudes of light attenuation and attenuation gradient. To supply the volumes of fine sediment computed to be in suspension during peak events, even with values of γ0 as low as 5 × 10−5, requires suspension of particles from unreasonably large depths in the bed. A limit on the depth of sediment availability is proposed as a correction to suspended sediment calculations. With such a limit, reasonable attenuation values are computed with γ0 ≈ 0.002. The effects of limiting availability and employing a higher γ0 are to reduce the volume of the finest sediment in suspension and to increase the suspended volumes of the coarser fractions. As a consequence, the average size and settling velocity of suspended sediment increases as bottom shear stress increases, with accompanying increases in near-bed concentration gradients. Higher concentration gradients produce larger stratification effects, particularly near the top of the wave boundary layer at times when wave shear velocities are high and current shear velocities are low. These are the conditions under which maximum attenuation gradients are observed.

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202 citations

"Fine-grained sediment dynamics duri..." refers background or result in this paper

...Our observations are coherent with the results of previous studies (e.g. Shi et al., 1985; Drake and Cacchione, 1989; Wiberg et al., 1994) which have shown that the fine-grained fraction, although it comprises only a low percentage of the sandy inner shelf sediments, is more easily resuspended than the coarser fractions and dominates the SSC signal during high stress events....
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...Thus, the setting of the Mediterranean margins is significantly different from shelves affected by strong tidal currents and/or ‘‘swell’’ waves, such as the US eastern and western coasts (Lyne et al., 1990; Madsen et al., 1994; Wiberg et al., 1994; Gardner et al., 2001; Chang and Dickey, 2001), where high-intensity sediment resuspension processes can occur across the entire shelf....
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Journal Article•DOI•

Across-shelf variations in bed roughness, bed stress and sediment suspension on the northern California shelf

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L. D. Wright¹, S.-C. Kim¹, Carl T. Friedrichs¹•Institutions (1)

Virginia Institute of Marine Science¹

02 Feb 1999-Marine Geology

TL;DR: In this paper, bottom-boundary-layer tripods were deployed on the 60-m and 70-m isobaths over the period 5 January to 7 March 1996, during which time two high-energy events occurred.

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109 citations

"Fine-grained sediment dynamics duri..." refers methods in this paper

...For sand classes, the settling velocity is computed by the Zanke formula (1977) for spherical grains of respective median diameter....
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Journal Article•DOI•

Near-bottom suspended sediment variability caused by storms and near-inertial internal waves on the Ebro mid continental shelf (NW Mediterranean)

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Pere Puig¹, Albert Palanques¹, Jorge Guillén¹•Institutions (1)

Spanish National Research Council¹

15 Aug 2001-Marine Geology

TL;DR: In this paper, the Ebro continental shelf at 60m depth during the transition between fair and stormy weather have revealed some of the major processes controlling the sediment resuspension and transport at mid shelf depths in this NW Mediterranean area.

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87 citations