 |
| Titel |
Heterogeneity at the oxic-anoxic interface in the water column of Lake Zug, Switzerland. |
| VerfasserIn |
Mathias K. Kirf, Carsten J. Schubert, Bernhard Wehrli |
| Konferenz |
EGU General Assembly 2011
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250048759
|
|
|
|
|
|
| Zusammenfassung |
| High-resolution oxygen measurements with micro trace-optodes and amperometric microsensors have been performed across the oxic-anoxic interface of the water column of Lake Zug, Switzerland.
For oxygen values down to nanomolar concentrations, the recorded experimental data show a strong heterogeneity of the oxic-anoxic interface in space and time. The exchange of oxygenated and anoxic waters across the interface seems to dominate over local oxygen consumption. The observed heterogeneity leads to a (much) larger surface of the oxic-anoxic interface and steeper gradients with possible implications for the microbial / chemical environment.
Along with the experimental data, approaches and advantages of the different technologies for low-concentration oxygen measurments will be presented. |
|
|
|
|
|
|