A5088223274- Geology and Paleoclimatology Research
- Ocean Acidification Effects and Responses
- Paleontology and Stratigraphy of Fossils
- Methane Hydrates and Related Phenomena
- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Marine and environmental studies
- Karst Systems and Hydrogeology
- Offshore Engineering and Technologies
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Calcium Carbonate Crystallization and Inhibition
- Geological Formations and Processes Exploration
- Geochemistry and Elemental Analysis
- Groundwater and Isotope Geochemistry
- Isotope Analysis in Ecology
- Reservoir Engineering and Simulation Methods
- Mine drainage and remediation techniques
Royal Netherlands Institute for Sea Research
2020-2024
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2020
Utrecht University
2020
Eötvös Loránd University
2019
Abstract. Upwelling regions are dynamic systems where relatively cold, nutrient-, and CO2-rich waters reach to the surface from deep. CO2 sink or source properties of these dependent not only on dissolved inorganic carbon content upwelled waters, but also efficiency biological pump which constrains drawdown atmospheric in waters. The Benguela System (BUS) is a major upwelling region with one most productive marine ecosystems today. However, contrasting signals reported variation intensities...
The sulfur over calcium ratio (S/Ca) in foraminiferal shells was recently proposed as a new and independent proxy for reconstructing marine inorganic carbon chemistry. This approach assumes that is incorporated into CaCO3 predominantly the form of sulfate (SO42−) through lattice substitution carbonate ions (CO32–), S/Ca thus reflects seawater [CO32–]. Although growth experiments validated this approach, field studies showed controversial results suggesting potential impact [CO32–] may be...
Abstract Reconstruction of the marine inorganic carbon system relies on proxy signal carriers, such as element/calcium (El/Ca) ratios in foraminiferal shells. Concentrations boron, lithium, strontium, and sulfur have been shown to vary with carbonate parameters, but when comparing individual reconstructions based these elements, they are rarely complete agreement. This is likely caused by simultaneous effects multiple environmental factors element incorporation. Culture experiments benthic...
The chemostratigraphic record of the Toarcian Oceanic Anoxic Event (T-OAE) is generally well documented in epicontinental basins; however, duration anoxia and recovery remains poorly constrained Tethys Ocean owing to limited stratigraphic resolution oceanic sections with hiatuses. In this paper, we describe a relatively continuous hemipelagic Central Western Carpathians Slovakia (Skladaná Skala section), which contains Pliensbachian/Toarcian boundary, T-OAE, subsequent phase. our section,...
Abstract. Upwelling regions are dynamic systems where relatively cold, nutrient- and CO2-rich waters reach to the surface from deep. CO2 sink or source properties of these dependent not only on dissolved inorganic carbon content upwelled waters, but also efficiency biological pump that provides constraint drawdown pCO2 in waters. The Benguela System (BUS) is a major upwelling region with one most productive marine ecosystems today. However, contrasting signals reported variation intensities...
Abstract. Submarine sinkholes are found on carbonate platforms around the world. They thought to form and grow when groundwater interactions generate conditions corrosive minerals. Because their morphology can restrict mixing water exchange, effects of biogeochemical processes accumulate such that sinkhole properties considerably diverge from surrounding ocean. Studies waters therefore reveal new insights into marine cycles; thus be considered “natural laboratories” where response ecosystems...
Sulfur over calcium ratio (S/Ca) in foraminiferal calcite has been suggested as a potential tool to reconstruct seawater carbonate ion concentration ([CO32-]). The approach of using sulfur incorporation proxy for the carbon system was based on benthic controlled growth experiments, which that foraminifera incorporate more when there is less [CO32-] available seawater. With sulfate ([SO42-]) being proposed be dominant form incorporated shells, S/Ca would provide an independent parameter...
Many foraminifera form shells made of calcium carbonate. The elemental and isotopic composition these varies greatly from inorganically precipitated calcites, suggesting a strong biological control on the process CaCO3 precipitation. Moreover, this differs, sometimes greatly, between species, which may indicate that controls calcite chemistry is not fixed among all species. For paleoceanographic application, better grip inter-species variability in necessary. Here we present latest insights...
<p>Understanding the atmosphere-continent-ocean carbon cycle and its associated oceanic system is one of keystones to face Anthropocene’s climate change. Since 1990s isotopic ratio boron (δ<sup>11</sup>B) in calcitic shells planktonic foraminifera has proven be a powerful geochemical proxy determine paleo-pH link atmospheric CO<sub>2</sub> level over geological...
<p>Whether or not Arctic regions remain(ed) a carbon sink source to the atmosphere during rapidly warming climates (in past) is fundamental question with regards future global and ocean acidification. The boron isotopic composition of planktonic foraminiferal shell calcite (δ<sup>11</sup>B<sub>Cc</sub>) can potentially provide valuable information past seawater pH if on second carbonate system parameter,...
Abstract. Submarine sinkholes are found on carbonate platforms around the world. They thought to form and grow when groundwater interactions generate conditions corrosive minerals. Because their morphology can restrict mixing water exchange, effects of biogeochemical processes accumulate such that sinkhole properties considerably diverge from surrounding ocean. Studies waters therefore reveal new insights into marine cycles, thus be considered as 'natural laboratories' where response...