Self-accelerating turbidity currents at laboratory scale

H. Naruse, O. Sequeiros, M. H. Garcia, G. Parker, N. Endo, K. S. Kataoka, M. Yokokawa, T. Muto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It has been suggested that the sustainability of turbidity currents is derived from self-sustainment of the flow. This self-sustainment can be realized through the process of acceleration of the current as it increases its own density due to the incorporation of sediment eroded from the substrate. Although self-sustaining turbidity currents have been predicted theoretically, experimental turbidity currents to date have all been net-depositional decelerating flows. We report here the results of experiments on self-sustaining turbidity currents. In order to produce non-depositional flows, we modeled the sediment using two types of plastic particles with densities that were much lower (1.3 and 1.5 g/cm 3) than that of siliciclastic sands. After the bed was covered with sediment, a mixture of sediment and water was injected to produce a turbidity current at the upcurrent end of the flume. As a result, some experimental flows showed acceleration, and measurements using siphons revealed that the sediment concentration of the flow increased downcurrent, so indicating a trend toward self-sustaining turbidity currents.

Original languageEnglish (US)
Title of host publicationRiver, Coastal and Estuarine Morphodynamics
Subtitle of host publicationRCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
Pages473-476
Number of pages4
StatePublished - Dec 1 2008
Event5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007 - Enschede, Netherlands
Duration: Sep 17 2007Sep 21 2007

Publication series

NameRiver, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
Volume1

Other

Other5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007
CountryNetherlands
CityEnschede
Period9/17/079/21/07

Fingerprint

turbidity current
Turbidity
Sediments
sediment
Siphons
laboratory
Sustainable development
Sand
plastic
sustainability
Plastics
substrate
sand
Substrates
Water
experiment
Experiments

ASJC Scopus subject areas

  • Ecology
  • Environmental Engineering

Cite this

Naruse, H., Sequeiros, O., Garcia, M. H., Parker, G., Endo, N., Kataoka, K. S., ... Muto, T. (2008). Self-accelerating turbidity currents at laboratory scale. In River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics (pp. 473-476). (River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics; Vol. 1).

Self-accelerating turbidity currents at laboratory scale. / Naruse, H.; Sequeiros, O.; Garcia, M. H.; Parker, G.; Endo, N.; Kataoka, K. S.; Yokokawa, M.; Muto, T.

River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. 2008. p. 473-476 (River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics; Vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Naruse, H, Sequeiros, O, Garcia, MH, Parker, G, Endo, N, Kataoka, KS, Yokokawa, M & Muto, T 2008, Self-accelerating turbidity currents at laboratory scale. in River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, vol. 1, pp. 473-476, 5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007, Enschede, Netherlands, 9/17/07.
Naruse H, Sequeiros O, Garcia MH, Parker G, Endo N, Kataoka KS et al. Self-accelerating turbidity currents at laboratory scale. In River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. 2008. p. 473-476. (River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics).
Naruse, H. ; Sequeiros, O. ; Garcia, M. H. ; Parker, G. ; Endo, N. ; Kataoka, K. S. ; Yokokawa, M. ; Muto, T. / Self-accelerating turbidity currents at laboratory scale. River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. 2008. pp. 473-476 (River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics).
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