Projekt

Zurück zur Übersicht

The role of lake sediments in the carbon cycle: methane emission

Titel Englisch The role of lake sediments in the carbon cycle: methane emission
Gesuchsteller/in Wehrli Bernhard
Nummer 130097
Förderungsinstrument Projektförderung (Abt. I-III)
Forschungseinrichtung Abteilung Oberflächengewässer EAWAG
Hochschule Eidg. Anstalt für Wasserversorgung, Abwasserreinigung und Gewässerschutz - EAWAG
Hauptdisziplin Hydrologie, Limnologie, Glaziologie
Beginn/Ende 01.06.2010 - 31.01.2011
Bewilligter Betrag 42'804.00
Alle Daten anzeigen

Alle Disziplinen (2)

Disziplin
Hydrologie, Limnologie, Glaziologie
Geochemie

Keywords (9)

methane; lake sediments; bubble ebullition; acoustic tracking; bubble plumes; redox conditions; ebullition; bubble plume; hot spots

Lay Summary (Englisch)

Lead
Lay summary
This Ph.D. project addresses two main questions:1.What are the main biogeochemical and physical factors driving high rates of methane ebullition from reservoir sediments?2.How can the ebullition pathways be effectively quantified?The study will provide a strong methodological basis and yield insights into the processes governing methane fluxes in two contrasting hydropower reservoirs on the Aare and the Zambezi Rivers.During the last part of this ongoing PhD project we will take advantage of two opportunities: 1) We are collaborating with specialists for atmospheric flux measurements in order to cross-validate our methods for short time scales at our Swiss field site on Wohlensee. 2) An ongoing interdisciplinary project on hydropower reservoirs on the Zambezi Basin offers the opportunity to contrast our detailed process study in Switzerland with an analysis of Lake Kariba in the Zambezi basin. This subtropical reservoir is characterized by a completely different climatic and hydrological setting and shows clear hot spots of methane emissions.
Direktlink auf Lay Summary Letzte Aktualisierung: 21.02.2013

Verantw. Gesuchsteller/in und weitere Gesuchstellende

Mitarbeitende

Verbundene Projekte

Nummer Titel Start Förderungsinstrument
120112 The role of lake sediments in the carbon cycle: organic carbon preservation and methane emission 01.06.2008 Projektförderung (Abt. I-III)
135299 Methane oxidation pathways at oxic-anoxic boundaries in lakes 01.04.2011 Projektförderung (Abt. I-III)

Abstract

This Ph.D. project addresses two main questions:1.What are the main biogeochemical and physical factors driving high rates of methane ebullition from reservoir sediments?2.How can the ebullition pathways be effectively quantified?The study will provide a strong methodological basis and yield insights into the processes governing methane fluxes in two contrasting hydropower reservoirs on the Aare and the Zambezi Rivers.We apply for funding of the full fourth year of the Ph.D. project in order to take advantage of two important opportunities: 1) We propose to collaborate with specialists for atmospheric flux measurements based on the eddy correlation technique in order to cross-validate our methods for short time scales at our Swiss field site. 2) An ongoing interdisciplinary project on hydropower reservoirs on the Zambezi Basin offers the opportunity to contrast our detailed process study on Lake Wohlen in Switzerland with an analysis of Lake Kariba in the Zambezi basin. This subtropical reservoir is characterized by a completely different climatic and hydrological setting.
-