HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Behaviour of a puff of resuspended sediment: a conceptual model

Abstract : The particulate matter concentration above the seabed is usually assumed to decrease with height, following an exponential or Rouse profile. Many particulate matter concentration profiles with a peak were found on the North Mediterranean bottom water at a few tens of metres above the bottom. A particle size signal at the same altitude was found in this area and on the New York Bight shelf. It is assumed that this unexpected shape is due to a cloud of resuspended cohesive sediments originating from an impulse resuspension process. A simplified three-dimensional numerical model is proposed to describe the behaviour of resuspended particulate matter that originates from a sediment impulse vertically injected in the bottom water. This model reproduces the concentration profile shape observed, and it gives indications concerning the length and time characteristics of such a cloud, depending on the water velocity and bottom boundary layer properties.
Complete list of metadata

https://hal-normandie-univ.archives-ouvertes.fr/hal-02299983
Contributor : Sylvain Guillou Connect in order to contact the contributor
Submitted on : Sunday, September 29, 2019 - 8:59:44 AM
Last modification on : Wednesday, March 9, 2022 - 2:14:03 PM

Links full text

Identifiers

Collections

Citation

J.C. Brun-Cottan, Sylvain Guillou, Z.H. Li. Behaviour of a puff of resuspended sediment: a conceptual model. Marine Geology, Elsevier, 2000, 167 (3-4), pp.355-373. ⟨10.1016/S0025-3227(00)00027-X⟩. ⟨hal-02299983⟩

Share

Metrics

Record views

27