Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Oxygen Ebullition From Lakes
View through CrossRef
AbstractThe exchange of oxygen between lakes and the atmosphere is assumed to be driven by diffusion. Here we show that lakes can emit significant amounts of O2 by emerging gas bubbles—a process called ebullition. We found very high proportions of 17 ± 10% O2 (maximum 34%) in emerging gas bubbles in two shallow eutrophic reservoirs. In the studied reservoirs, O2 emission by ebullition was of similar magnitude as diffusive O2 fluxes. By reanalyzing previous studies, we show that the process is ubiquitous and probably quantitatively relevant in many places. We present evidence that O2 in bubbles originates both from photosynthetic oxygen production and hence bubble formation in the oxic water and from stripping by emerging methane bubbles. Ebullition can turn lakes undersaturated in respect to the atmosphere into a net O2 source. Neglecting O2 ebullition leads to an overestimation of lake internal respiration.
American Geophysical Union (AGU)
Title: Oxygen Ebullition From Lakes
Description:
AbstractThe exchange of oxygen between lakes and the atmosphere is assumed to be driven by diffusion.
Here we show that lakes can emit significant amounts of O2 by emerging gas bubbles—a process called ebullition.
We found very high proportions of 17 ± 10% O2 (maximum 34%) in emerging gas bubbles in two shallow eutrophic reservoirs.
In the studied reservoirs, O2 emission by ebullition was of similar magnitude as diffusive O2 fluxes.
By reanalyzing previous studies, we show that the process is ubiquitous and probably quantitatively relevant in many places.
We present evidence that O2 in bubbles originates both from photosynthetic oxygen production and hence bubble formation in the oxic water and from stripping by emerging methane bubbles.
Ebullition can turn lakes undersaturated in respect to the atmosphere into a net O2 source.
Neglecting O2 ebullition leads to an overestimation of lake internal respiration.
Related Results
Étude expérimentale et modélisation de l’ébullition transitoire
Étude expérimentale et modélisation de l’ébullition transitoire
Suite à un défaut de contrôle de la réaction nucléaire, un accident d’insertion de réactivité (RIA) peut survenir dans une centrale. Un pic de puissance se produit alors dans certa...
Detection and spatiotemporal analysis of methane ebullition on thermokarst lake ice using high-resolution optical aerial imagery
Detection and spatiotemporal analysis of methane ebullition on thermokarst lake ice using high-resolution optical aerial imagery
Abstract. Thermokarst lakes are important emitters of methane, a potent greenhouse gas. However, accurate estimation of methane flux from thermokarst lakes is difficult due to thei...
Detecting methane ebullition on thermokarst lake ice using high resolution optical aerial imagery
Detecting methane ebullition on thermokarst lake ice using high resolution optical aerial imagery
Abstract. Thermokarst lakes are important emitters of methane, a potent greenhouse gas. However, accurate estimation of methane flux from thermokarst lakes is difficult due to thei...
Methane bubbling from northern lakes: present and future contributions to the global methane budget
Methane bubbling from northern lakes: present and future contributions to the global methane budget
Large uncertainties in the budget of atmospheric methane (CH
4
) limit the accuracy of climate change projections. Here we describe and quantify an importan...
An Object-Based Classification Method to Detect Methane Ebullition Bubbles in Early Winter Lake Ice
An Object-Based Classification Method to Detect Methane Ebullition Bubbles in Early Winter Lake Ice
Thermokarst lakes in the Arctic and Subarctic release carbon from thawing permafrost in the form of methane and carbon dioxide with important implications for regional and global c...
Etude de l’ébullition d’un fluide diélectrique en mini-canal vertical : application au contrôle thermique des packs batteries
Etude de l’ébullition d’un fluide diélectrique en mini-canal vertical : application au contrôle thermique des packs batteries
Cette thèse s’inscrit dans le contexte industriel de fort développement des véhicules électriques qui contiennent des packs de batteries de plus en plus puissants et compacts. Ces ...
Anticipating future ice-dammed lakes across High Mountain Asia
Anticipating future ice-dammed lakes across High Mountain Asia
<p>Over recent decades, a significant increase in the amount and the size of glacier lakes has been observed. These lakes enhance glacier mass loss but also present s...
Saline systems of the Great Plains of western Canada: an overview of the limnogeology and paleolimnology
Saline systems of the Great Plains of western Canada: an overview of the limnogeology and paleolimnology
AbstractIn much of the northern Great Plains, saline and hypersaline lacustrine brines are the only surface waters present. As a group, the lakes of this region are unique: there i...