A5008165508- Geology and Paleoclimatology Research
- Karst Systems and Hydrogeology
- Geological formations and processes
- Groundwater and Isotope Geochemistry
- Pleistocene-Era Hominins and Archaeology
- Maritime and Coastal Archaeology
- Geological and Geophysical Studies Worldwide
- Coral and Marine Ecosystems Studies
- Geological and Geophysical Studies
- Archaeology and ancient environmental studies
- Tree-ring climate responses
- Methane Hydrates and Related Phenomena
- Marine and environmental studies
- Paleontology and Stratigraphy of Fossils
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Isotope Analysis in Ecology
- Archaeological and Geological Studies
- Climate variability and models
- Building materials and conservation
- Landslides and related hazards
- Pacific and Southeast Asian Studies
- Coastal wetland ecosystem dynamics
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
Johannes Gutenberg University Mainz
2016-2025
Institute of Geosciences
2021-2023
Centre de Géosciences
2023
ARC Centre of Excellence for Core to Crust Fluid Systems
2021
Macquarie University
2021
Max Planck Institute for Chemistry
2010-2021
International Union of Railways
2019
University of Applied Sciences Mainz
2018
Max Planck Institute for Biogeochemistry
2012-2015
University of Bristol
2008-2012
Abstract The extent to which climate variability in Central Asia is causally linked large-scale changes the Asian monsoon on varying timescales remains a longstanding question. Here we present precisely dated high-resolution speleothem oxygen-carbon isotope and trace element records of Asia’s hydroclimate from Tonnel’naya cave, Uzbekistan Kesang western China. On orbital timescales, supra-regional variance, inferred our oxygen records, exhibits precessional rhythm, punctuated by...
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%...
Surface temperature is a fundamental parameter of Earth's climate. Its evolution through time commonly reconstructed using the oxygen isotope and clumped compositions carbonate archives. However, reaction kinetics involved in precipitation carbonates can introduce inaccuracies derived temperatures. Here, we show that dual analyses, i.e., simultaneous ∆47 ∆48 measurements on single phase, identify origin quantify extent these kinetic biases. Our results verify theoretical predictions evidence...
Abstract. Here we present high-resolution stable isotope and lamina thickness profiles as well radiocarbon data for the Holocene stalagmite ER 76 from Grotta di Ernesto (north-eastern Italy), which was dated by combined U-series dating counting. grew between 8 ka (thousands of years before 2000 AD) today, with a hiatus 2.6 to 0.4 ka. Data nine meteorological stations in Trentino show significant influence North Atlantic Oscillation (NAO) on winter temperature precipitation cave region....
Abstract. Characterizing the temporal uncertainty in palaeoclimate records is crucial for analysing past climate change, correlating events between records, assessing periodicities, identifying potential triggers and evaluating model simulations. The first global compilation of speleothem isotope by SISAL (Speleothem Isotope Synthesis Analysis) working group showed that age uncertainties are not systematically reported published literature, these only available a limited number (ca. 15 %,...
Abstract. Both marine and terrestrial carbonates can be precisely dated by U-series disequilibrium methods in the age range
Here we use the δ 18 O time‐series of three stalagmites from high alpine Spannagel cave (Austria) which grew in small distance each other to construct a precisely dated, continuous curve for last 9 kyr (COMNISPA). This speleothem record is not influenced by effects kinetic isotope fractionation due low temperatures cave. Thus, variations can be interpreted terms past climate change. COMNISPA exhibits several oscillations within Holocene, and their timing duration agreement with that...
Abstract. Holocene climate was characterised by variability on multi-centennial to multi-decadal time scales. In central Europe, these fluctuations were most pronounced during winter. Here we present a record of past winter for the last 10.8 ka based four speleothems from Bunker Cave, western Germany. Due its European location, cave site is particularly well suited changes in precipitation and temperature response North Atlantic realm. We high-resolution records δ18O, δ13C values Mg/Ca...