A5063311508- Geology and Paleoclimatology Research
- Karst Systems and Hydrogeology
- Methane Hydrates and Related Phenomena
- Groundwater and Isotope Geochemistry
- Isotope Analysis in Ecology
- Marine and environmental studies
- Maritime and Coastal Archaeology
- Geological formations and processes
- Coral and Marine Ecosystems Studies
- Hydrocarbon exploration and reservoir analysis
- Geological and Geophysical Studies Worldwide
- Pleistocene-Era Hominins and Archaeology
- Archaeology and ancient environmental studies
- Marine Biology and Ecology Research
- Geological and Geophysical Studies
- Tree-ring climate responses
- Marine and coastal ecosystems
- Geophysics and Gravity Measurements
- Archaeological and Geological Studies
- Landslides and related hazards
- Cryospheric studies and observations
- Smart Grid Security and Resilience
- earthquake and tectonic studies
- Archaeology and Historical Studies
- Marine and coastal plant biology
Heidelberg University
2016-2025
Heidelberg University
2017-2023
Forschungsgemeinschaft für elektrische Anlagen und Stromwirtschaft
2003-2021
Institut für Energie- und Umweltforschung Heidelberg
2018
Heidelberg Academy of Sciences and Humanities
2001-2014
Helmholtz Centre for Environmental Research
2011
University of Arizona
2010
Kiel University
1992-2001
GEOMAR Helmholtz Centre for Ocean Research Kiel
2001
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...
The largest coherent cold-water coral (CWC) mound province in the Atlantic Ocean exists along Mauritanian margin, where up to 100 m high mounds extend over a distance of ∼400 km, arranged two slope-parallel chains 400–550 water depth. Additionally, CWCs are present numerous submarine canyons with isolated being developed on some canyon flanks. Seventy-seven Uranium-series ages were assessed elucidate timing CWC colonisation and development margin for last ∼120,000 years. Our results show...
Carbon capture and storage (CCS) technology is routinely cited as a cost effective tool for climate change mitigation. CCS can directly reduce industrial CO2 emissions essential the retention of extracted from atmosphere. To be mitigation tool, must securely retained 10,000 years (10 ka) with leakage rate below 0.01% per year total amount injected. Migration back to atmosphere via through geological faults potential high impact risk integrity. Here, we calculate first time natural rates 420...
Abstract Some of the carbon removed from Earth’s surface is stored within authigenic carbonate in marine sediments. Methane seeps are crucial sites global cycling sustaining microbial activity, enabling formation and transfer methane-derived to geosphere. Carbon sequestration rates depend on precipitation rates, which can be accelerated by mat-forming microorganisms that ubiquitous at methane other Earth environments today. We investigate a 5-m-long drill core an active seep 1350 m water...
Two years of cave monitoring investigate ventilation processes in Cueva Larga, a tropical Puerto Rico. The is 1,440 m long with large main passage (about 120,000 m3). Cave air pCO2 the varies seasonally, between 600 ppm winter and 1,800 summer. seasonal variability permits estimation exchange time 36 ± 5 days rate 3,300 1,000 m3/day for passage. Calculations virtual temperature differences surface indicate that cycle driver alternation well-ventilated mode near-stagnant summer mode....
Abstract Previous glacial intervals were punctuated by abrupt climate transitions between cold (stadial) and warm (interstadial) conditions. Many mechanisms leading to stadial-interstadial variability have been hypothesized with ice volume being a commonly involved element. Here, we test which extent insolation modulated oscillations occurred during the penultimate glacial. We present replicated precisely dated speleothem record covering period 200 130 ka before from caves located in...