en
Scientific article
Open access
English

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

Published inWater resources research, vol. 40, no. 10
Publication date2004
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
Affiliation 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
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal0043-1397
528views
312downloads

Technical informations

Creation10/06/2014 12:47:00 PM
First validation10/06/2014 12:47:00 PM
Update time03/14/2023 9:49:42 PM
Status update03/14/2023 9:49:42 PM
Last indexation05/02/2024 3:37:29 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack