Université de Fribourg

A multi-method field experiment to determine local groundwater flow in a glacier forefield

Kobierska, Florian ; Jonas, Tobias ; Griessinger, Nena ; Hauck, Christian ; Huxol, Stephan ; Bernasconi, Stefano M.

In: Hydrological Processes, 2015, vol. 29, no. 6, p. 817–827

We implemented multiple independent field techniques to determine the direction and velocity of groundwater flow at a specific stream reach in a glacier forefield. Time-lapse experiments were conducted using two electrical resistivity tomography (ERT) lines installed in a cross pattern. A circular array of groundwater tubes was also installed to monitor groundwater flow via discrete salt...

Université de Neuchâtel

Chemical and Biological Gradients along the Damma Glacier Soil Chronosequence, Switzerland

Bernasconi, Stefano M. ; Bauder, Andreas ; Bourdon, Bernard ; Brunner, Ivano ; Bünemann, Else ; Chris, Iso ; Derungsg, Nicolas ; Edwards, Peter ; Farinotti, Daniel ; Frey, Beat ; Frossard, Emmanuel ; Furrer, Gerhard ; Gierga, Merle ; Göransson, Hans ; Gülland, Kathy ; Hagedorn, Frank ; Hajdas, Irka ; Hindshawc, Ruth ; Ivy-Ochs, Susan ; Jansa, Jan ; Jonas, Tobias ; Kiczkac, Mirjam ; Kretzschmar, Ruben ; Lemarchand, Emmanuel ; Luster, Jörg ; Magnusson, Jan ; Mitchell, Edward A. D. ; Venterink, Harry Olde ; Plötze, Michael ; Reynolds, Ben ; Smittenberg, Rienk H. ; Stähli, Manfred ; Tamburini, Federica ; Tipper, Edward T. ; Wacker, Lukas ; Welc, Monika ; Wiederhold, Jan G. ; Zeyer, Josef ; Zimmermann, Stefan ; Zumsteg, Anita

In: Vadose Zone Journal, 2011, vol. 10, no. 3, p. 867-883

Soils are the product of a complex suite of chemical, biological, and physical processes. In spite of the importance of soils for society and for sustaining life on earth, our knowledge of soil formation rates and of the influence of biological activity on mineral weathering and geochemical cycles is still limited. In this paper we provide a description of the Damma Glacier Critical Zone...

Université de Neuchâtel

Weathering, soil formation and initial ecosystem evolution on a glacier forefield: a case study from the Damma Glacier, Switzerland

Bernasconi, Stefano M. ; Mitchell, Edward A. D.

In: Mineralogical Magazine, 2008, vol. 72, no. 1, p. 19-22

The understanding of biogeochemical processes at the interface between geosphere, hydrosphere and biosphere is of paramount importance for many questions related to global climate and environmental change at very different time and spatial scales. In addition, soils are the principal resource for food production and the understanding of soil formation processes and biological interactions within...

Université de Neuchâtel

Investigating the history of East Asian monsoon and climate during the last glacial–interglacial period (0–140 000 years) : mineralogy and geochemistry of ODP Sites 1143 and 1144, South China Sea

Tamburini, P. ; Adatte, Thierry ; Föllmi, Karl B. ; Bernasconi, Stefano M. ; Steinmann, P.

In: Marine Geology, 2003, vol. 201, p. 147-168

Monsoon climate is an important component of the global climatic system. A comprehensive understanding of its variability over glacial–interglacial time scales as well as of its effects on the continent and in the ocean is required to decipher links between climate, continental weathering and productivity. A detailed multiproxy study, including bulk and clay mineralogy, grain-size analysis,...

Université de Neuchâtel

Sedimentary phosphorus record from the Oman margin : New evidence of high productivity during glacial periods

Tamburini, Federica ; Föllmi, Karl B. ; Adatte, Thierry ; Bernasconi, Stefano M. ; Steinmann, Philipp

In: Paleoceanography, 2003, vol. 18, no. 1, p. 15(1-14)

The northern region of the Arabian Sea is one of the biologically most fertile regions of the world oceans, with present productivity rates varying between 150 and 2500 mgC/m2 × day [ Madhupratap et al., 1996 ]. This is related to the influence of the southwesterly summer monsoon which causes vigorous upwelling along the Oman margin. Upwelling ceases during northeasterly winter monsoon activity;...