A5047149243- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Arctic and Antarctic ice dynamics
- Geological Studies and Exploration
- Cryospheric studies and observations
- Astro and Planetary Science
- Hydrocarbon exploration and reservoir analysis
- Astronomical Observations and Instrumentation
- Marine and environmental studies
- Atmospheric and Environmental Gas Dynamics
- Polar Research and Ecology
- Isotope Analysis in Ecology
- Geological and Geophysical Studies
- Seismic Imaging and Inversion Techniques
- Offshore Engineering and Technologies
- Planetary Science and Exploration
- Geomagnetism and Paleomagnetism Studies
- Spacecraft and Cryogenic Technologies
- Geophysics and Gravity Measurements
- Climate change and permafrost
- Geological Modeling and Analysis
- Marine and coastal ecosystems
- Radioactive contamination and transfer
- Scientific Research and Discoveries
- Solar and Space Plasma Dynamics
University of Bremen
2018-2025
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2014-2025
Karolinska Institutet
2022-2024
Durham University
2021
Texas A&M University
2021
Leibniz Centre for Tropical Marine Research
2021
Abstract. In Antarctica, the presence of sea ice not only plays a critical role in climate system but also contributes to enhancing stability floating shelves. Hence, investigating past ice-proximal conditions, especially across glacial–interglacial cycles, can provide crucial information pertaining variability and deepen our understanding ocean–ice–atmosphere dynamics feedback. this study, we apply multiproxy approach, combination with numerical modeling, explore environmental variability....
Significance In coastal Alaska and the St. Elias orogen, over past 1.2 million years, mass flux leaving mountains due to glacial erosion exceeds plate tectonic input. This finding underscores power of climate in driving rates, potential feedback mechanisms linking climate, erosion, tectonics, complex nature climate−tectonic coupling transient responses toward longer-term dynamic equilibration landscapes with ever-changing environments.
Abstract. In the last decades, changing climate conditions have had a severe impact on sea ice at western Antarctic Peninsula (WAP), an area rapidly transforming under global warming. To study development of spring and environmental in pre-satellite era we investigated three short marine sediment cores for their biomarker inventory with particular focus proxy IPSO25 micropaleontological proxies. The core sites are located Bransfield Strait shelf to deep basin areas characterized by complex...
Abstract. The importance of Antarctic sea ice and Southern Ocean warming has come into the focus polar research during last couple decades. Especially around West Antarctica, where warm water masses approach continent declined, distribution evolution play a critical role in stability nearby shelves. Organic geochemical analyses marine seafloor surface sediments from continental margin allow an evaluation applicability biomarker-based sea-ice ocean temperature reconstructions these...
A wide range of evidence reveals that the tropical belt is expanding. Several mechanisms have been proposed to contribute this expansion, some which even contradict each other. The study Yang et al. suggests poleward advancing mid-latitude meridional temperature gradient (MTG), originating from enhanced subtropical ocean warming, plays a leading role in driving expansion. However, abrupt4xCO2 experiment indicates expansion occurs at faster rate than indicated by changes related rise....
Antarctica's continental margins pose an unknown submarine landslide-generated tsunami risk to Southern Hemisphere populations and infrastructure. Understanding the factors driving slope failure is essential assessing future geohazards. Here, we present a multidisciplinary study of major landslide complex along eastern Ross Sea (Antarctica) that identifies preconditioning mechanisms. Weak layers, identified beneath three landslides, consist distinct packages interbedded Miocene- Pliocene-age...
Abstract. The reconstruction of past sea-ice distribution in the Southern Ocean is crucial for an improved understanding ice–ocean–atmosphere feedbacks and evaluation Earth system Antarctic ice sheet models. Peninsula (AP) has been experiencing a warming since start regular monitoring atmospheric temperature 1950s. associated decrease cover contrasts trend growing extent East Antarctica. To reveal long-term history at northern (NAP) under changing climate conditions, we examined marine...
Abstract. Organic geochemical and micropaleontological analyses of surface sediments collected in the southern Drake Passage Bransfield Strait, Western Antarctic Peninsula, enable a proxy-based reconstruction recent sea ice conditions this climate-sensitive area. We study distribution biomarker IPSO25, biomarkers open marine environments such as more unsaturated highly branched isoprenoid alkenes phytosterols. Comparison sedimentary these lipids with data obtained from satellite observations...
Abstract Satellite observations covering the last four decades reveal an ocean warming pattern resembling negative phase of Pacific Decadal Oscillation. This has therefore been widely interpreted as a manifestation natural climate variability. Here, we re-examine observed and find that predominant over subtropical oceans, while mild or even cooling subpolar ocean, is dynamically consistent with convergence divergence surface water. By comparison observations, paleo-reconstructions, model...
One of Earth’s most fundamental climate shifts, the greenhouse-icehouse transition 34 million years ago, initiated Antarctic ice sheet buildup, influencing global until today. However, extent during Early Oligocene Glacial Maximum (~33.7 to 33.2 ago) that immediately followed this transition—a critical knowledge gap for assessing feedbacks between permanently glaciated areas and early Cenozoic reorganization—is uncertain. In work, we present shallow-marine drilling data constraining earliest...
The future behaviour of the Antarctic Ice Sheet is considered as one largest unknowns in global climate predictions and dramatically accelerated ice loss has been observed over past few decades for numerous of its drainage basins. However, those records only reflect a short moment limited informative value when considering length full cycle sheet build-up retreat. deglaciation history East sector largely...
The Arctic is changing: sea ice retreating and the Greenland Ice Sheet melting. impact of a “bluer” “greener” has yet to fully unfold, extensive impacts are expected on ocean currents, stratification, marine heat waves ecosystems.Our poster introduces newly funded ERC Synergy Grant “Into Blue - Resolving Past Greenhouse Climates (i2B)”. In coming 6 years, we will study past warm periods during Quaternary, Pliocene Miocene with focus...