A5092798043- Geology and Paleoclimatology Research
- Polar Research and Ecology
- Cryospheric studies and observations
- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
- Microbial Community Ecology and Physiology
- Geological formations and processes
- Oil Spill Detection and Mitigation
- Climate change and permafrost
- Indigenous Studies and Ecology
- Hydrocarbon exploration and reservoir analysis
GNS Science
2023-2024
ABSTRACT Radiocarbon ( 14 C) dating of sediment deposition around Antarctica is often challenging due to heterogeneity in sources and ages organic carbon the sediment. Chemical thermochemical techniques have been used separate when microfossils are not present. These generally improve on bulk dates, but they necessitate assumptions about age spectra specific molecules or compound classes chemical separations. To address this, Rafter Laboratory has established parallel ramped pyrolysis...
Abstract. The Antarctic environment is amongst the coldest and driest environments on Earth. ultraxerous soils in McMurdo Dry Valleys support exclusively microbial communities, however, 15 million years ago, a tundra ecosystem analogous to present-day southern Greenland occupied this region. occurrence of ancient soil organic carbon combined with low input rates makes it challenging differentiate between modern processes. Here, we document additions carbon, preservation degradation organics...
Accelerating ocean-driven basal melting of Antarctic ice shelves in recent decades has implications for sea level rise and global overturning circulation. Here, we reconstruct oceanographic conditions at the confluence Ross Sea Southern Ocean by analyzing a multi-proxy Holocene marine sedimentary record collected from Robertson Bay. A ramped pyrolysis oxidation radiocarbon age-depth model provides timeline glacial behavior changes over last 6700 years. The diatom assemblage, magnetic...
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