A5062380431- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Polar Research and Ecology
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Winter Sports Injuries and Performance
- Pleistocene-Era Hominins and Archaeology
- Marine Biology and Ecology Research
- Arctic and Antarctic ice dynamics
- Geological and Geophysical Studies
- Geographic Information Systems Studies
- Hydrocarbon exploration and reservoir analysis
- Maritime Transport Emissions and Efficiency
- Species Distribution and Climate Change
- Coastal wetland ecosystem dynamics
Trinity College Dublin
2023-2025
University of Exeter
2023-2025
National Oceanography Centre
2018-2022
University of Southampton
2018-2022
British Antarctic Survey
2019-2022
Bangor University
2019
The dynamics of the British-Irish Ice Sheet (BIIS) during Last Glacial were conditioned by marine-based ice streams, largest which far was Irish Sea Stream (ISIS) drained southwest across Celtic shelf. maximum extent and timing ISIS have been constrained onshore evidence from UK Ireland, glacigenic sediments encountered in a small suite vibrocores UK-Irish continental shelf, single radiocarbon date is available. These data long supported advance to at least mid-shelf, while recent results...
Mapping and understanding the distribution of seabed sediments in shelf seas is crucial for sustainable coastal management, offshore activities, assessing conserving Blue Carbon stocks. Fine-grained sediments, such as mud, play a vital role long-term organic carbon storage, so it essential to map measure extent these carbon-rich deposits across seas. However, despite their importance global cycle, many regional seas, Patagonian Shelf, remain poorly studied. We present novel high-resolution...
Muddy sediments across continental shelves serve as a reserve for blue carbon and act natural sink, supporting the buffering ability of shelf seas against global rise in dioxide associated climate warming. However, these areas are also exposed to anthropogenic activities, mainly fishing bottom trawling, increasing probability additional loss by remineralisation. For successful management sea stocks, it is thus important understand amount stored, reactivity organic (labile or refractory),...
Abstract Understanding and mapping seabed sediment distribution in shelf seas is essential for effective coastal management, offshore developments, blue carbon stock assessments conservation. Fine‐grained marine sediments, particularly muds, play a key role long‐term organic sequestration, so knowledge of the spatial extent these carbon‐rich deposits important. Here, we consider how changes sea tidal dynamics since Last Glacial Maximum have influenced development three mud depocenters...
Reconstructing Holocene relative sea-level change from salt-marsh sediment requires a modern training set that captures the observable relationship between proxies and local tidal elevation. We collected 143 surface samples four salt marshes in Prince Edward Island (PEI, Canada) to develop of foraminifera bulk-sediment δ 13 C 15 N values. Two sites have semi-diurnal regimes, one has mixed regime, diurnal regime. Combining standardizing datasets different regimes fails adequately characterize...
Abstract. Basal hydrological systems play an important role in controlling the dynamic behaviour of ice streams. Data showing their morphology and relationship to geological substrates beneath modern streams are, however, sparse difficult collect. We present new multibeam bathymetry data that make Anvers-Hugo Trough west Antarctic Peninsula most completely surveyed palaeo-ice stream pathway Antarctica. The reveal a diverse range landforms, including streamlined features where there was fast...
Reconstructing the advance and retreat of past ice sheets provides important long-term context for recent change(s) enables us to better understand sheet responses forcing mechanisms external boundary conditions that regulate grounding line retreat. This study applies various radiocarbon dating techniques, guided by a detailed sedimentological analyses, reconstruct glacial history Anvers-Hugo Trough (AHT), one largest bathymetric troughs on western Antarctic Peninsula (WAP) shelf. Existing...
Abstract. Planktonic foraminifera are widely used in biostratigraphic, palaeoceanographic and evolutionary studies, but the strength of many study conclusions could be weakened if taxonomic identifications not reproducible by different workers. In this study, to assess relative importance a range possible reasons for among-worker disagreement identification, 100 specimens 26 species macroperforate planktonic were selected from core-top site subtropical Pacific Ocean. Twenty-three scientists...
The ocean is known to be a vast and globally important carbon sink there an urgent need better understand the role played by shelf sea sediments in cycle. Organic preferentially stored marine muds, deposition of which has predominantly been dictated bottom currents controlled waves tides. Through numerical modelling predict accumulation, alongside data mining synthesis, we aim make first-order approximation global stocks sediments. We are developing new high resolution models simulate timing...
Abstract. Basal hydrological systems play an important role in controlling the dynamic behaviour of ice streams. Data showing their morphology and relationship to geological substrates beneath modern streams are, however, sparse difficult collect. We present new multibeam bathymetry data that make Anvers-Hugo Trough (AHT) west Antarctic Peninsula most completely surveyed palaeo-ice stream pathways Antarctica. interpret landforms as indicating subglacial water availability played facilitating...
We demonstrate the utility and reproducibility of saltmarsh foraminifera-based ‘geological tide gauge’ (GTG) approach by developing two independent records relative sea-level (RSL) change for Dublin, Ireland. Our records, recovered from different saltmarshes, indicate that RSL rose at a century-scale rate 1.5 ± 0.9 mm yr–1 over last 200 years. This compares favourably with shorter, but more precise, mean sea level (MSL) record Dublin Port gauge, which indicates long-term (1953–2016 CE) rise...