Refine my results

Language

Université de Fribourg

Quantification of Lithological Heterogeneity Within Opalinus Clay : Toward a Uniform Subfacies Classification Scheme Using a Novel Automated Core Image Recognition Tool

Lauper, Bruno ; Zimmerli, Géraldine N. ; Jaeggi, David ; Deplazes, Gaudenz ; Wohlwend, Stephan ; Rempfer, Johannes ; Foubert, Anneleen

In: Frontiers in Earth Science, 2021, vol. 9, p. 645596

The Opalinus Clay is notable in Switzerland as being the selected host rock for deep geological disposal of radioactive waste. Since the early 1990’s, this argillaceous mudstone formation of Jurassic age has been intensively studied within the framework of national and international projects to characterize its geological, hydrological, mechanical, thermal, chemical, and biological...

Université de Fribourg

Geochemical fingerprinting of key lithologies and depositional processes across the upper boundary of the Opalinus Clay (Aalenian, Middle Jurassic, northern Switzerland)

Lauper, Bruno ; Deplazes, Gaudenz ; Vogel, Hendrik ; Jaeggi, David ; Wohlwend, Stephan ; Ariztegui, Daniel ; Foubert, Anneleen

In: The Depositional Record, 2021, vol. 7, no. 1, p. 25-51

The Opalinus Clay is an argillaceous to silty mudstone formation, notable in Switzerland as the selected host rock for deep geological disposal of radioactive waste. Its upper bounding unit (Passwang Formation and eastern equivalents) is composed of successions of mudstone, sandy bioclastic marl and limestone separated by ooidal ironstone beds. The lithostratigraphic transition is diachronous...

Université de Fribourg

The impact of climate change and glacier mass loss on the hydrology in the Mont-Blanc massif

Laurent, Léa ; Buoncristiani, Jean‑François ; Pohl, Benjamin ; Zekollari, Harry ; Farinotti, Daniel ; Huss, Matthias ; Mugnier, Jean‑Louis ; Pergaud, Julien

In: Scientific Reports, 2020, vol. 10, no. 1, p. 10420

The Mont-Blanc massif, being iconic with its large glaciers and peaks of over 4,000 m, will experience a sharp increase in summer temperatures during the twenty-first century. By 2100, the impact of climate change on the cryosphere and hydrosphere in the Alps is expected to lead to a decrease in annual river discharge. In this work, we modelled the twenty-first century evolution of runoff in...

Université de Fribourg

Adsorption-induced kondo effect in metal-free phthalocyanine on Ag(111)

Granet, J. ; Sicot, M. ; Gerber, I. C. ; Kremer, Geoffroy ; Pierron, T. ; Kierren, B. ; Moreau, L. ; Fagot-Revurat, Y. ; Lamare, S. ; Chérioux, F. ; Malterre, D.

In: The Journal of Physical Chemistry C, 2020, vol. 124, no. 19, p. 10441–10452

We report on the formation of a two-dimensional supramolecular Kondo lattice made of organic molecules comprising only C, N, and H atoms, namely metal-free phthalocyanines 2HPc (C32H18N8), adsorbed on a Ag(111) surface. Low-temperature scanning tunneling microscopy/spectroscopy (LT-STM/STS), ultraviolet photoemission spectroscopy (UPS), and density functional theory (DFT) are used to...

Université de Fribourg

Tectonics of the Neuchâtel Jura Mountains: insights from mapping and forward modelling

Rime, Valentin ; Sommaruga, Anna ; Schori, Marc ; Mosar, Jon

In: Swiss Journal of Geosciences, 2019, vol. 112, no. 2, p. 563–578

This study focuses on a geological section in the Jura Mountains across the villages of Travers, La Brévine in Switzerland, and Morteau in France. Field mapping was conducted to complement and densify existing data. A kinematically and geometrically consistent forward model has been developed to understand and interpret the observed surface structures. The proposed solution features a...

Université de Fribourg

Tectonics controls on fluvial landscapes and drainage development in the westernmost part of Switzerland: Insights from DEM-derived geomorphic indices

Radaideh, Omar M. A. ; Mosar, Jon

In: Tectonophysics, 2019, vol. 768, p. 228179

This work focuses particularly on the geomorphological evidence for the tectonic controls on the development of the present-day fluvial landscapes in the westernmost part of Switzerland. The tectonic deformation was evaluated on the basis of a combined analysis of several classical geomorphic indices (hypsometric curves and integrals, transverse topographic symmetry index, and channel's...