@misc{10481/69908,
year = {2021},
month = {4},
url = {http://hdl.handle.net/10481/69908},
abstract = {Bubble-plume diffusers are increasingly used to add dissolved oxygen (DO) to the hypolimnion
of lakes and reservoirs. Bubble plumes are successful at replenishing hypolimnetic DO, but they
also introduce mixing energy that induces subtle changes in the thermal structure of the
reservoir, driving changes in plume behavior. To account for this complex plume-reservoir
interaction, a double bubble-plume model is coupled with a three-dimensional hydrodynamic
model. The coupled model is used to reassess a field-scale analysis of the bubble-plume diffuser
in two-basin Amisk Lake, aiming at evaluating the relative role of bubble-induced circulation
and internal-seiching in driving inter-basin transport under stratified conditions. A large-scale
plume-induced circulation was previously thought to be the main driver of inter-basin oxygen
transport. This interpretation was based on the attribution of the time-averaged circulation in the
channel due to plume operation. However, the intrinsic complexity of the hydraulic system and
the sparseness of the field data introduced large uncertainties in the previous analysis. Here, we
demonstrate that the time-averaged circulation is primarily the result of wind-driven internal
seiches. Oxygen exchange is shown to be controlled by the interaction between internal seichedriven
horizontal transport along the channel, and, the rate at which added oxygen reaches the
layers above the sill, which is mainly controlled by plume-induced circulation. Internal-seiche
driven transport through basin constrictions will vary depending on the magnitude of the wind
forcing, depth of the thermocline and the channel geometry. These results highlight the
importance of understanding water movement prior to introducing restoration actions in lakes.},
organization = {National Science Foundation (NSF)	CBET 1033514},
publisher = {Wiley-Blackwell Publishing},
title = {Fate of Artificially Injected Oxygen in the Hypolimnion of a Two-Basin Lake: Amisk Lake, revisited},
doi = {10.1029/2020WR028840},
author = {Toledo, Jorge C. and Ramón Casañas, Cintia Luz and Rueda Valdivia, Francisco José},
}