A5038037314- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Polar Research and Ecology
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Geological and Geophysical Studies
- Geological and Geochemical Analysis
- Paleontology and Stratigraphy of Fossils
- Marine Biology and Ecology Research
- Hydrocarbon exploration and reservoir analysis
- Reservoir Engineering and Simulation Methods
- Offshore Engineering and Technologies
- Drilling and Well Engineering
- Climate change and permafrost
- Arctic and Antarctic ice dynamics
- Winter Sports Injuries and Performance
- Geological Studies and Exploration
- Seismic Imaging and Inversion Techniques
- Landslides and related hazards
- Marine and coastal plant biology
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- EU Law and Policy Analysis
- Marine animal studies overview
- Marine and environmental studies
Macquarie University
2012-2024
Australian National University
2023-2024
Geoscience Australia
2005-2023
IE University
2023
Japan External Trade Organization
2015
United States Geological Survey
2013
University of Tasmania
2013
Geological Survey of Western Australia
1993-2004
Australian Antarctic Division
1998
Mineral Resources
1986-1992
A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, explore forcing mechanisms responsible for retreat. Such can be derived from a broad range geological glaciological datasets recent decades have seen an upsurge such data gathering around continent Sub-Antarctic islands. Here, we report new synthesis those datasets, based on accompanying series reviews data,...
The East Antarctic Ice Sheet (EAIS) is the largest continental ice mass on Earth, and documenting its evolution since Last Glacial Maximum (LGM) important for understanding present-day future behaviour. As part of a community effort, we review geological evidence from Antarctica that constrains sheet history throughout this period (∼30,000 years ago to present). This includes terrestrial cosmogenic nuclide dates previously glaciated regions, 14C chronologies glacial post-glacial deposits...
A marine survey in Prydz Bay, provides an unparalleled view of glacigenic and sedimentation across Channel Amery Depression during the Late Quaternary. Gravity cores a suite eight radiocarbon dates indicate that Wisconsin Glacial Maximum (LGM) was associated with grounding palaeo-ice shelf along periphery Channel. Deposition front line dominated by ice-rafting. granulated facies, containing angular clay diamicton clasts, producd combination regelation freezing, near to line, remelting this...
Abstract With ongoing climate change, research into the biological changes occurring in particularly vulnerable ecosystems, such as Antarctica, is critical. The Totten Glacier region, Sabrina Coast, currently experiencing some of highest rates thinning across all East Antarctica. An assessment microscopic organisms supporting ecosystem marginal sea‐ice zone over continental rise important, yet there a lack knowledge about diversity and distribution these throughout water column, their...
ABSTRACT A crevasse splay deposited on the floodplain of Clarence River in northeastern New South Wales, Australia, by a small, ephemeral tributary provides guide to geometry and sedimentary structures splays general processes affecting their final form. The consists main lobe sand with smaller fingers that end slipfaces around its edges. Water seeping out channel reworks part into gently thinning sheet. Small-scale facies models derived from different parts this explain origins solitary...
Abstract The Collaborative East Antarctic Marine Census (CEAMARC) surveys to the Terre Adélie and George V continental margin highlight requirement for a revised high-resolution bathymetry model that can be used as spatial tool improving information on physical environment of region. We have combined shiptrack singlebeam multibeam bathymetry, coastline data, land ice sheet topographic data develop new regional-scale grid, called GVdem (short digital elevation model). grid spans an area...
Abstract Dense coral-sponge communities on the upper continental slope at 570–950 m off George V Land, East Antarctica have been identified as Vulnerable Marine Ecosystems. The challenge is now to understand their probable distribution other parts of Antarctic margin. We propose three main factors governing margin: 1) depth in relation iceberg scouring, 2) flow organic-rich bottom waters, and 3) location head shelf cutting canyons. Icebergs scour 500 this region lack such disturbance a...
Prydz Bay is one of the largest embayments on East Antarctic coast and it discharge point for approximately 16% Ice Sheet. Geological constraints regional ice sheet history include evidence past relative sea-level change at three sites; Vestfold Hills, Rauer Islands Larsemann Hills. In this paper we compile updated data from these sites. We compare with a suite predictions derived glacial isostatic adjustment models discuss significance departures between field evidence. The compiled...
Along the Sabrina Coast, extensive canyon systems, mapped in high resolution during RV Investigator voyage IN2017_V01, cut through continental slope and rise. These essential conduits for transporting water masses to from shelf provide a pathway upwelling warm deep (e.g., Donda et al., 2024). Beryllium isotope ratios (10Be/9Be) can be used as an indicator of due differing beryllium concentrations surface water, (von Blanckenburg 1996; Jeromson 2024), meltwater ice shelves (Yokoyama 2016,...
Radiolarians are siliceous marine zooplankton found in all of the world’s oceans, inhabiting entire water column. Their fossilised skeletons, preserved sediments, provide valuable paleoceanographic information due to their distinct depth preferences. In Southern Ocean, radiolarians ice-edge sediment cores offer a snapshot into  past oceanographic conditions and climatic changes linked ocean-ice interactions.Detailed counts radiolarian taxa have been generated using core...
The intrusion of relatively warm Circumpolar Deep Water (CDW) onto the Antarctic continental shelf is widely recognized as a threat to ice shelves and glaciers grounded below sea level, enhanced ocean heat increases their basal melt. CDW incursion currently causing mass loss, thinning extensive grounding line retreat Totten Glacier (Sabrina Coast), which drains one vastest East subglacial basin complexes, Aurora-Sabrina basin, holds more than 3.5 m Sea Level Equivalent (SLE). Another stream,...
Several grounding zone wedges were left on the floor and flanks of Prydz Channel in western Bay by Lambert Glacier during last glacial cycle. Seismic profiles indicate that vertical accretion at glacier bed was most important depositional process forming wedges, rather than progradation sediment gravity flows. Sidescan sonographs reveal extensive development flutes sea inshore from indicating deformable conditions beneath ice. The region east wedge features dune fields formed currents...
Abstract Two sediment cores collected from beneath the Amery Ice Shelf, East Antarctica describe physical sedimentation patterns an existing major embayed ice shelf. Core AM01b was a site of basal freezing, contrasting with core AM02, melting. Both comprise Holocene siliceous muddy ooze (SMO), however, also recovered interbedded siliciclastic mud, sand and gravel inclined bedding in its lower 27 cm. This interval indicates episode variable but strong current activity before SMO became...