Interaction between a bubble plume and the near field in a stratified lake

McGinnis, Daniel Frank; Lorke, A.; Wüest, A.; Stöckli, A.; Little, J. C.

doi:10.1029/2004WR003038

Scientific article

English

Interaction between a bubble plume and the near field in a stratified lake

Contributors

McGinnis, Daniel Frank

; Lorke, A.; Wüest, A.; Stöckli, A.; Little, J. C.

Published in

Water resources research, vol. 40, no. 10

Publication date

2004

Abstract

A steady state bubble-plume model is evaluated using full-scale temperature, salinity, and dissolved oxygen data collected in a Swiss lake. The data revealed a plume-generated near-field environment that differed significantly from the ambient far-field water column properties. A near-field torus of reduced stratification developed around the plume, the extent of which is on the same lateral scale as the horizontal dislocations generated by persistent first-mode seiching. The plume fallback water was found to penetrate much deeper than expected, thereby maintaining reduced vertical gradients in the near-field torus. The plume entrains a portion of the fallback water leading to short-circuiting, which generates a complex plume-lake interaction and reduces far-field downwelling relative to the upward plume flow. As the integral plume model incorporates the entrainment hypothesis, it is highly sensitive to the near-field environmental conditions. After identifying appropriate near-field boundary conditions the plume model predictions agree well with the field observations.

Keywords

Aeration
Bubble plume
Buoyancy
Hypolimnion
Oxygen transfer
Reservoir

UNIGE affiliation entities

Not a UNIGE publication

Citation (ISO format)

MCGINNIS, Daniel Frank et al. Interaction between a bubble plume and the near field in a stratified lake. In: Water resources research, 2004, vol. 40, n° 10. doi: 10.1029/2004WR003038

Article (Published version)

Identifiers

PID : unige:40723
DOI : 10.1029/2004WR003038

Journal ISSN

0043-1397

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704downloads

Creation

06/10/2014 12:47:00

First validation

06/10/2014 12:47:00

Update

14/03/2023 21:49:42

Status update

14/03/2023 21:49:42

Last indexation

30/10/2024 20:15:18

Interaction between a bubble plume and the near field in a stratified lake

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

Citation (ISO format)

Main files (1)

Identifiers

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation