Publicaties
Development and validation of a full-time-scale semi-analytical model for the short- and long-term simulation of vertical geothermal bore fields KU Leuven
This paper presents the development and validation of a full-time-scale semi-analytical bore field simulation model. The model allows for the simulation of bore fields comprised of arbitrarily positioned boreholes while accounting for both short-term transient thermal effects within the boreholes and long-term thermal interactions in the bore field. The g-function of the bore field, obtained from the finite line source solution, is corrected to ...
Global-scale characterization of turning points in arid and semi-arid ecosystem functioning KU Leuven
AimChanges in dryland ecosystem functioning are threatening the well‐being of human populations worldwide, and land degradation, exacerbated by climate change, contributes to biodiversity loss and puts pressures on sustainable livelihoods. Here, abrupt changes in ecosystem functioning [so‐called turning points (TPs)] were detected using time series of Earth observation data. Hotspot areas of high TP occurrence were identified, observed changes ...
The Giant Marine Gastropod Campanile Giganteum (Lamarck, 1804) as a High-Resolution Archive of Seasonality in the Eocene Greenhouse World Vrije Universiteit Brussel KU Leuven
Giant gastropods are among the largest mollusks in the fossil record, but their potential as paleoseasonality archives has received little attention. Here, we combine stable isotope and trace element analyses with microscopic observations and growth modeling on shells of two species of the gastropod genus Campanile: the extinct Campanile giganteum from Lutetian (~45 Ma) deposits in the Paris Basin (France), the longest gastropod known from ...
Subdaily-Scale Chemical Variability in a Torreites Sanchezi Rudist Shell: Implications for Rudist Paleobiology and the Cretaceous Day-Night Cycle Vrije Universiteit Brussel
Abstract This study presents subdaily resolved chemical records through fossil mollusk shell calcite. Trace element profiles resolve periodic variability across ~40-\thin daily growth laminae in a Campanian Torreites sanchezi rudist bivalve. These high-resolution records are combined with seasonally resolved stable isotope and trace element records that allow shell-chemical variability to be discussed on both seasonal and daily scale. A ...
Street Child Spaces: belonging, conflict and resistance in the city of Durban through the eyes of street youth Vrije Universiteit Brussel
This article is concerned with the everyday ‘spatial tactics’ deployed by children in a street situation in order to deal with notions of public space that define them as ‘out of place’, marginal and deviant. Using photovoice, we reconstruct former street children’s definitions of and feelings about their spaces in the city, bringing into view a complex set of social problems, attitudes and strategies that moves beyond the traditional binary ...
Structural and Geochemical Interactions Between Magma and Sedimentary Host Rock: The Hovedøya Case, Oslo Rift, Norway Vrije Universiteit Brussel
Abstract Two end-member conceptual models are used to describe deformation of the Earth's crust induced by magma intrusion. ?Mode I? fracturing assumes tensile or opening-mode, elastic deformation, while ?Mode II? fracturing assumes plastic shear-mode deformation around a viscous indenter. Field observations of both mechanisms exist, but it remains unclear which mechanism dominates in which conditions. We describe intrusion geometries, host rock ...
Quo vadis, Tommotian? Vrije Universiteit Brussel
The concept of the Tommotian Regional Stage of the Siberian Platform has been closely linked to the idea of the ‘Cambrian Explosion’ of animals and protists when the entire Earth system shifted rapidly into Phanerozoic mode. We conducted a multidisciplinary study of an informal ‘synstratotype’ of the lower Tommotian boundary in the upper Mattaia Formation, Kessyusa Group in the Olenek Uplift, NE of the Siberian Platform. The Mattaia Formation ...