A5053799995- Geology and Paleoclimatology Research
- Geophysics and Gravity Measurements
- Cryospheric studies and observations
- Geological formations and processes
- Methane Hydrates and Related Phenomena
- Geomagnetism and Paleomagnetism Studies
- Maritime and Coastal Archaeology
- Oceanographic and Atmospheric Processes
- Landslides and related hazards
- Winter Sports Injuries and Performance
- GNSS positioning and interference
- Marine and environmental studies
- Solar and Space Plasma Dynamics
- Pleistocene-Era Hominins and Archaeology
- earthquake and tectonic studies
- Geological and Geophysical Studies
- Geological and Geochemical Analysis
- Scientific Research and Discoveries
- Arctic and Antarctic ice dynamics
- Coastal and Marine Dynamics
- Pacific and Southeast Asian Studies
- Climate change and permafrost
- demographic modeling and climate adaptation
- Inertial Sensor and Navigation
- Statistical and numerical algorithms
Australian National University
2014-2024
Australian Regenerative Medicine Institute
2024
University of Tasmania
2024
Monash University
2024
Japan Agency for Marine-Earth Science and Technology
2019
The University of Tokyo
2019
National Institute of Polar Research
2019
Significance Several areas of earth science require knowledge the fluctuations in sea level and ice volume through glacial cycles. These include understanding past sheets providing boundary conditions for paleoclimate models, calibrating marine-sediment isotopic records, background signal evaluating anthropogenic contributions to level. From ∼1,000 observations level, allowing isostatic tectonic contributions, we have quantified rise fall global ocean volumes 35,000 years. Of particular note...
Lambeck, K., Purcell, A., Zhao, J. & Svensson, N‐O. 2010 (April): The Scandinavian Ice Sheet: from MIS 4 to the end of Last Glacial Maximum. Boreas , Vol. 39, pp. 410–435. 10.1111/j.1502‐3885.2010.00140.x. ISSN 0300‐9483. rebound modelling, establish constraints on past ice sheets observational evidence palaeo‐shoreline elevations, is well established for post‐ Maximum (post‐LGM) period, which relatively abundant and distributed spatially in time. This particularly case Scandinavia. For...
Using glacial rebound models we have inverted observations of crustal and shoreline locations to estimate the ice thickness for major glaciations over northern Eurasia predict palaeo‐topography from late MIS‐6 (the Late Saalian at c. 140 kyr BP) MIS‐4e (early Middle Weichselian 64 BP). During Saalian, extended across Europe Russia with a broad dome centred Kara Sea Karelia that reached maximum 4500 m surface elevation 3500 above sea level. A secondary occurred Finland 4000 3000 m,...
Two‐dimensional paleotidal simulations have been undertaken to investigate tidal and tide‐dependent changes (tidal amplitudes, current velocities, seasonal stratification, peak bed stress vectors) that occurred in the NW European shelf seas during last 20 ka. The test effect of shelf‐wide isostatic sea level by incorporating results from two different crustal rebound models, ocean‐tide variability setting open boundary values either fixed present state or variable according a global model....
Abstract The most rapid global sea-level rise event of the last deglaciation, Meltwater Pulse 1A (MWP-1A), occurred ∼14,650 years ago. Considerable uncertainty regarding sources meltwater limits understanding relationship between MWP-1A and concurrent fast-changing climate. Here we present a data-driven inversion approach, using glacio-isostatic adjustment model to invert for via constraints from six geographically distributed sites. results suggest contributions Antarctica, 1.3 m (0–5.9 m;...
Research Article| September 01, 2008 Ups and downs of the Mississippi Delta Michael D. Blum; Blum * 11Department Geology Geophysics, Louisiana State University, Baton Rouge, 70803, USA *E-mail: mike@geol.lsu.edu. Search for other works by this author on: GSW Google Scholar Jonathan H. Tomkin; Tomkin 22Department Geology, University Illinois at Urbana-Champaign, Urbana, 61801, Anthony Purcell; Purcell 33Research School Earth Sciences, The Australian National Canberra ACT 0200, Australia Robin...
Abstract Past sea-level change represents the large-scale state of global climate, reflecting waxing and waning ice sheets corresponding effect on ocean volume. Recent developments in sampling analytical methods enable us to more precisely reconstruct past changes using geological indicators dated by radiometric methods. However, ice-volume alone cannot wholly account for these observations local, relative because various geophysical factors including glacio-hydro-isostatic adjustments...
Abstract The recent release of the next‐generation global ice history model, ICE6G_C(VM5a) , is likely to be interest a wide range disciplines including oceanography (sea level studies), space gravity (mass balance glaciology, and, course, geodynamics (Earth rheology studies). In this paper we make an assessment some aspects model and show that published present‐day radial uplift rates are too high along eastern side Antarctic Peninsula (by ∼8.6 mm/yr) beneath Ross Ice Shelf ∼5 mm/yr)....
Abstract Models of glacio‐hydroisostatic sea‐level change have been published for the British Isles that are broadly consistent with observational evidence, as well glaciological constraints. It has argued, however, models fail to represent along Irish Sea margins and in southern Ireland post‐deglaciation period. The argument rests on interpretation depositional environment elevated ‘Irish Drift’ both sides Sea: whether this is terrestrial or glaciomarine. isostatic former sea‐levels either...
We examine the geodetically derived rotational variations for rate of change degree-two harmonics Earth's geopotential, |$\skew5\dot J_2$|, and true polar wander, combining a recent melting model glaciers Greenland Antarctic ice sheets taken from IPCC 2013 Report (AR5) with two representative GIA models describing last deglaciation, ICE5G ANU developed at Australian National University. Geodetically observations |$\skew4\dot J_2$| are characterized by temporal changes −(3.7 ± 0.1) × 10−11...
Abstract. We describe a program that produces paleo-ice sheet reconstructions using an assumption of steady-state, perfectly plastic ice flow behaviour. It incorporates three input parameters: margin, basal shear stress and topography. Though it is unlikely sheets were ever in complete steady-state conditions, this method can produce without relying on complicated unconstrained parameters such as climate dynamics. This makes advantageous to use glacial-isostatic adjustment modelling, which...