Experimental and numerical study of topographic effects on deposition from two-dimensional, particle-driven density currents

Kubo, Yusuke

doi:10.1016/j.sedgeo.2003.11.002

Cited by 56 publications

(47 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reduction in sea-floor gradient would cause flow deceleration and reduce the current's capacity to transport its sediment load, especially the coarser-grained fraction. Therefore, a zone of enhanced deposition would be expected directly downstream of the slope break, as has been demonstrated by laboratory experiments (Mulder & Alexander 2001;Kubo 2004).…”

Section: Development Of Proximal Slope-related Faciesmentioning

confidence: 75%

Facies architecture of the Grès de Peïra Cava, SE France: landward stacking patterns in ponded turbiditic basins

Amy

Kneller

McCaffrey

2007

JGS

View full text Add to dashboard Cite

Basins in which turbidity currents are completely or partially trapped are common in many tectonically active, deep-water settings. Field study of an Eocene-Oligocene turbiditic system in the Peïra Cava area, a sub-basin of the Alpine foreland in southeastern France, allows spatial characterization of a ponded basin fill on the basis of a correlation framework derived from measured outcrop sections and photomosaics. The basin-fill architecture comprises a sand-rich, proximal scour-and-fill facies and a downstream transition to mud-rich, basin-plain turbidite sheet facies. The proximal facies is interpreted to have formed directly downstream of a slope break, where currents were highly erosional during some periods and highly depositional during other periods, as a result of the interacting effects of turbulence enhancement and rapid deceleration. Both the proximal facies and the downstream transition to distal basin-plain facies occur in progressively landward positions at higher stratigraphic levels. The landward shift in depositional facies is likely to have resulted from the basin-floor aggradation and a landward migration of the slope break. This 'back-stepping' process may be expected to occur in many ponded turbiditic basins and to produce a similar type of sedimentary architecture.

show abstract

Section: Development Of Proximal Slope-related Faciesmentioning

confidence: 75%

Facies architecture of the Grès de Peïra Cava, SE France: landward stacking patterns in ponded turbiditic basins

Amy

Kneller

McCaffrey

2007

JGS

View full text Add to dashboard Cite

show abstract

“…Let us remark that there are some discrepancies in the mathematical expression of the source terms φ η and φ j b . The expressions proposed in [18,20,23,30] are among the most used, but some variants may be found in [2,4,19]. We refer to these references for further details.…”

Section: Turbidity Current Modelmentioning

confidence: 99%

A HLLC scheme for nonconservative hyperbolic problems. Application to turbidity currents with sediment transport

Díáz¹,

Fernández-Nieto

Luna

et al. 2012

ESAIM: M2AN

View full text Add to dashboard Cite

Abstract. The goal of this paper is to obtain a well-balanced, stable, fast, and robust HLLC-type approximate Riemann solver for a hyperbolic nonconservative PDE system arising in a turbidity current model. The main difficulties come from the nonconservative nature of the system. A general strategy to derive simple approximate Riemann solvers for nonconservative systems is introduced, which is applied to the turbidity current model to obtain two different HLLC solvers. Some results concerning the nonnegativity preserving property of the corresponding numerical methods are presented. The numerical results provided by the two HLLC solvers are compared between them and also with those obtained with a Roe-type method in a number of 1d and 2d test problems. This comparison shows that, while the quality of the numerical solutions is comparable, the computational cost of the HLLC solvers is lower, as only some partial information of the eigenstructure of the matrix system is needed.Mathematics Subject Classification. 65N06, 76B15, 76M20, 76N99.

show abstract

“…Experimental studies have shown topographic obstacles generating increased deposition on both the stoss and lee sides. This is due to: a) disruption of turbulence on the stoss side, b) expansion of the flow on the lee side, c) stationary mixing vortices, and, d) general increased entrainment from exposure of the base of the flow to ambient shear mixing (Alexander and Morris, 1994;Morris and Alexander, 2003;Kubo, 2004;Al-Ja'aidi, 2006). In contrast, lofting gravity currents where lofting is triggered directly by the obstacle display a localised zone of increased deposition only on the stoss side.…”

Section: Comparison With Saline-particulate Flowsmentioning

confidence: 99%

Effects of topography on lofting gravity flows: Implications for the deposition of deep-water massive sands

Stevenson

Peakall

2010

Marine and Petroleum Geology

View full text Add to dashboard Cite

Experimental and numerical study of topographic effects on deposition from two-dimensional, particle-driven density currents

Cited by 56 publications

References 39 publications

Facies architecture of the Grès de Peïra Cava, SE France: landward stacking patterns in ponded turbiditic basins

Facies architecture of the Grès de Peïra Cava, SE France: landward stacking patterns in ponded turbiditic basins

A HLLC scheme for nonconservative hyperbolic problems. Application to turbidity currents with sediment transport

Effects of topography on lofting gravity flows: Implications for the deposition of deep-water massive sands

Contact Info

Product

Resources

About