A5089274529- Geochemistry and Elemental Analysis
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Silicon Effects in Agriculture
- Paleontology and Stratigraphy of Fossils
- Geological and Geochemical Analysis
- Groundwater and Isotope Geochemistry
- Coral and Marine Ecosystems Studies
- Geochemistry and Geologic Mapping
- Ion-surface interactions and analysis
- Laser-induced spectroscopy and plasma
- Geomagnetism and Paleomagnetism Studies
- Marine and coastal ecosystems
- Cryospheric studies and observations
- Groundwater flow and contamination studies
- Mass Spectrometry Techniques and Applications
- Soil and Water Nutrient Dynamics
- Planetary Science and Exploration
- Water Quality and Resources Studies
- Heavy metals in environment
- Analytical chemistry methods development
- Arctic and Antarctic ice dynamics
- Cephalopods and Marine Biology
- Ocean Acidification Effects and Responses
- Geological formations and processes
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2017-2025
Pennsylvania State University
2014-2021
GFZ Helmholtz Centre for Geosciences
2013-2017
Leibniz University Hannover
2006-2011
This paper contains the results of an extensive isotopic study United States Geological Survey GSD-1G and MPI-DING reference glasses. Thirteen different laboratories were involved using high-precision bulk (TIMS, MC-ICP-MS) microanalytical (LA-MC-ICP-MS, LA-ICP-MS) techniques. Detailed studies performed to demonstrate large-scale small-scale homogeneity Together with previously published data from ten other laboratories, preliminary information values as well their uncertainties at 95%...
Abstract This case study of Kongsfjorden, western coastal Svalbard, provides insights on how freshwater runoff from marine‐ and land‐terminating glaciers influences the biogeochemical cycles distribution patterns carbon, nutrients, trace elements in an Arctic fjord system. We collected samples water column at stations along axis proglacial river catchments, analyzed concentrations dissolved elements, together with as well alkalinity inorganic carbon. Statistical tools were applied to...
Abstract The Arctic is changing rapidly due to the amplification of global temperature trends, causing profound impacts on ice sheet in Greenland, glaciers, frozen ground, ecosystems, and societies. Here, we focus that atmospheric circulation causes addition climate warming trends. We combine time series glacier mass balance from temporal satellite gravimetry measurements (GRACE/GRACE-FO; 2002–2023), active layer thickness permafrost areas ESA’s Climate Change Initiative remote sensing...
Rationale Boron isotopes are a powerful tool for pH reconstruction in marine carbonates and as tracer fluid–mineral interaction geochemistry. Microanalytical approaches based on laser ablation multi‐collector inductively coupled plasma mass spectrometry (LA‐MC‐ICP‐MS) often suffer from effects induced by the sample matrix. In this study, we investigate matrix‐independent analyses of B isotopic ratios apply technique to cold‐water corals. Methods We employ customized 193 nm femtosecond system...
Major- and trace-element data Nd isotope compositions for granitoid samples from the Grampian Highlands in Scotland show a systematic evolution composition of their sources course Caledonian Orogeny. Granitoids 511–451 Ma, related to collision Midland Valley island arc with terrane, S-type affinity fractionated REE patterns minor Eu anomalies low initial ϵ values −14.1 −11.2 suggesting melting predominantly Dalradian metasediments. Subsequently formed granitoids 425–406 Ma derived an assumed...
Abstract. The boron isotopic composition (δ11B) of benthic foraminifera provides a valuable tool to reconstruct past deep-water pH. As the abundance monospecific species might be limited in sediments, microanalytical techniques can help overcome this problem, but such studies on foraminiferal δ11B are sparse. In addition, microanalytics provide information distribution at high spatial resolution increase knowledge biomineralization processes, for example. For study, we investigated intra-...
Cold-water corals (CWCs) are considered vulnerable to environmental changes. However, previous studies have focused on adult CWCs and mainly investigated the short-term effects of single stressors. So far, changes different CWC life stages unknown, both for multiple stressors over long time periods. Therefore, we conducted a six-month aquarium experiment with three Caryophyllia huinayensis study their physiological response (survival, somatic growth, calcification respiration) interactive...
Abstract. The boron isotopic composition (δ11B) of benthic foraminifera provides a valuable tool to reconstruct past deep-water pH. As the abundance monospecific species might be limited in sediments, microanalytical techniques can help overcome this problem, but such studies on foraminiferal δ11B are sparse. In addition, microanalytics provide information distribution at high spatial resolution increase knowledge e.g. biomineralization processes. For study, we investigated intra- and...