The National Computational Infrastructure (NCI) at the Australian National University (ANU) is a ... more The National Computational Infrastructure (NCI) at the Australian National University (ANU) is a partnership between CSIRO, ANU, Bureau of Meteorology (BoM) and Geoscience Australia. Recent investments in a 1.2 PFlop Supercomputer (Raijin), ~ 20 PB data storage using Lustre filesystems and a 3000 core high performance cloud have created a hybrid platform for higher performance computing and data-intensive science to enable large scale earth and climate systems modelling and analysis. There are > 3000 users actively logging in and > 600 projects on the NCI system. Efficiently scaling and adapting data and software systems to petascale infrastructures requires the collaborative development of an architecture that is designed, programmed and operated to enable users to interactively invoke different forms of in-situ computation over complex and large scale data collections. NCI makes available major and long tail data collections from both the government and research sectors base...
The National Computational Infrastructure (NCI) has established a powerful in-situ computational ... more The National Computational Infrastructure (NCI) has established a powerful in-situ computational environment to enable both high performance computing and data-intensive science across a wide spectrum of national environmental data collections – in particular climate, observational data and geoscientific assets. This paper examines 1) the computational environments that supports the modelling and data processing pipelines, 2) the analysis environments and methods to support data analysis, and 3) the progress in addressing harmonisation of the underlying data collections for future transdisciplinary research that enable accurate climate projections. NCI makes available 10+ PB major data collections from both the government and research sectors based on six themes: 1) weather, climate, and earth system science model simulations, 2) marine and earth observations, 3) geosciences, 4) terrestrial ecosystems, 5) water and hydrology, and 6) astronomy, social and biosciences. Collectively th...
This paper emphasises the importance of data stewardship as a fundamental part of the scientific ... more This paper emphasises the importance of data stewardship as a fundamental part of the scientific method, and the need to effect cultural change to ensure engagement by earth scientists. It is differentiated from the science of data stewardship per se. Earth System science generates vast quantities of data, and in the past, data analysis has been constrained by compute power, such that sub-sampling of data often provided the only way to reach an outcome. This is analogous to Kahneman's System 1 heuristic, with its simplistic and often erroneous outcomes. The development of HPC has liberated earth sciences such that the complexity and heterogeneity of natural systems can be utilised in modelling at any scale, global, or regional, or local; for example, movement of crustal fluids. Paradoxically, now that compute power is available, it is the stewardship of the data that is presenting the main challenges. There is a wide spectrum of issues: from effectively handling and accessing ac...
Although the Late Devonian extinctions were amongst the largest mass extinction events in the Pha... more Although the Late Devonian extinctions were amongst the largest mass extinction events in the Phanerozoic, causes, nature and timing of these events remain poorly restrained.
... The APEA Journal 35, 203–291. 10. Ruble, TE, Logan, GA, Blevin, JE, Struckmeyer, HIM, Liu, K.... more ... The APEA Journal 35, 203–291. 10. Ruble, TE, Logan, GA, Blevin, JE, Struckmeyer, HIM, Liu, K., Ahmed, M., Eadington, PJ and Quezada, RA, 2001 – Geochemistry and charge history of a palaeo-oil column: Jerboa–1, Eyre Sub-basin, Great Australian Bight. ...
Middle Ordovician large organic walled microfossils (chitinozoans, scolecodonts, hydrozoans and f... more Middle Ordovician large organic walled microfossils (chitinozoans, scolecodonts, hydrozoans and foraminiferal linings) were recovered from the upper Goldwyer and lower Nita formations, Canning Basin, Western Australia, from three cores (WMC Santalum 1A, Kunzea 1 and Acacia 2). Petrophysical logs of these cores reveal an overall upward shallowing supersequence, overprinted by numerous transgression/regression couplets that can be correlated over 100 km.
Geochemical analyses of specimens of Reduviasporonites suggests that it is most likely of algal, ... more Geochemical analyses of specimens of Reduviasporonites suggests that it is most likely of algal, rather than fungal origin. As probable alga, Reduviasporonites is unlikely to be integral to the process of mass extinction occurring at or near the Permian Triassic boundary, as ...
... surface outcrop, open-cut mine 514 TABLE 1 Lithology, bedding, and mineralogy of samples ... ... more ... surface outcrop, open-cut mine 514 TABLE 1 Lithology, bedding, and mineralogy of samples ... 1) The recovery of distinctive morpho-types, consistent with other early Proterozoic microfossil ...Diagenesis of metals chemically com-plexed to bacteria: laboratory formation of metal ...
Two assemblages of organic-walled microfossils have been recognized in drillcore samples from the... more Two assemblages of organic-walled microfossils have been recognized in drillcore samples from the late Proterozoic Rodda Beds in the eastern Officer Basin, South Australia. The fossils include tube-like remains and large, simple and sculptured acritarchs. Lithostratigraphic studies and seismic information, in conjunction with previous (albeit limited) acritarch finds, allow local correlation of the Rodda Beds with Ediacaran or terminal Proterozoic sequences in the northern Adelaide Fold Belt (site of the nominated Ediacaran stratotype). The new palynofloras are comparable with acritarch assemblages in the Amadeus Basin of central Australia, and suggest tentative correlations with sequences in China and the U.S.S.R. The presence of isotopically heavy marine carbonate in the lower fossiliferous horizons of the Rodda Beds ((PC PDB = + 3 to +6% 0 ) is consistent with isotopic data from the equivalent interval in China. In contrast, the upper fossiliferous strata occur higher in the Rodda Beds where carbonate is significantly lighter (# 13 C PDB = -1 to + 3% o ).
The National Computational Infrastructure (NCI) at the Australian National University (ANU) is a ... more The National Computational Infrastructure (NCI) at the Australian National University (ANU) is a partnership between CSIRO, ANU, Bureau of Meteorology (BoM) and Geoscience Australia. Recent investments in a 1.2 PFlop Supercomputer (Raijin), ~ 20 PB data storage using Lustre filesystems and a 3000 core high performance cloud have created a hybrid platform for higher performance computing and data-intensive science to enable large scale earth and climate systems modelling and analysis. There are > 3000 users actively logging in and > 600 projects on the NCI system. Efficiently scaling and adapting data and software systems to petascale infrastructures requires the collaborative development of an architecture that is designed, programmed and operated to enable users to interactively invoke different forms of in-situ computation over complex and large scale data collections. NCI makes available major and long tail data collections from both the government and research sectors base...
The National Computational Infrastructure (NCI) has established a powerful in-situ computational ... more The National Computational Infrastructure (NCI) has established a powerful in-situ computational environment to enable both high performance computing and data-intensive science across a wide spectrum of national environmental data collections – in particular climate, observational data and geoscientific assets. This paper examines 1) the computational environments that supports the modelling and data processing pipelines, 2) the analysis environments and methods to support data analysis, and 3) the progress in addressing harmonisation of the underlying data collections for future transdisciplinary research that enable accurate climate projections. NCI makes available 10+ PB major data collections from both the government and research sectors based on six themes: 1) weather, climate, and earth system science model simulations, 2) marine and earth observations, 3) geosciences, 4) terrestrial ecosystems, 5) water and hydrology, and 6) astronomy, social and biosciences. Collectively th...
This paper emphasises the importance of data stewardship as a fundamental part of the scientific ... more This paper emphasises the importance of data stewardship as a fundamental part of the scientific method, and the need to effect cultural change to ensure engagement by earth scientists. It is differentiated from the science of data stewardship per se. Earth System science generates vast quantities of data, and in the past, data analysis has been constrained by compute power, such that sub-sampling of data often provided the only way to reach an outcome. This is analogous to Kahneman's System 1 heuristic, with its simplistic and often erroneous outcomes. The development of HPC has liberated earth sciences such that the complexity and heterogeneity of natural systems can be utilised in modelling at any scale, global, or regional, or local; for example, movement of crustal fluids. Paradoxically, now that compute power is available, it is the stewardship of the data that is presenting the main challenges. There is a wide spectrum of issues: from effectively handling and accessing ac...
Although the Late Devonian extinctions were amongst the largest mass extinction events in the Pha... more Although the Late Devonian extinctions were amongst the largest mass extinction events in the Phanerozoic, causes, nature and timing of these events remain poorly restrained.
... The APEA Journal 35, 203–291. 10. Ruble, TE, Logan, GA, Blevin, JE, Struckmeyer, HIM, Liu, K.... more ... The APEA Journal 35, 203–291. 10. Ruble, TE, Logan, GA, Blevin, JE, Struckmeyer, HIM, Liu, K., Ahmed, M., Eadington, PJ and Quezada, RA, 2001 – Geochemistry and charge history of a palaeo-oil column: Jerboa–1, Eyre Sub-basin, Great Australian Bight. ...
Middle Ordovician large organic walled microfossils (chitinozoans, scolecodonts, hydrozoans and f... more Middle Ordovician large organic walled microfossils (chitinozoans, scolecodonts, hydrozoans and foraminiferal linings) were recovered from the upper Goldwyer and lower Nita formations, Canning Basin, Western Australia, from three cores (WMC Santalum 1A, Kunzea 1 and Acacia 2). Petrophysical logs of these cores reveal an overall upward shallowing supersequence, overprinted by numerous transgression/regression couplets that can be correlated over 100 km.
Geochemical analyses of specimens of Reduviasporonites suggests that it is most likely of algal, ... more Geochemical analyses of specimens of Reduviasporonites suggests that it is most likely of algal, rather than fungal origin. As probable alga, Reduviasporonites is unlikely to be integral to the process of mass extinction occurring at or near the Permian Triassic boundary, as ...
... surface outcrop, open-cut mine 514 TABLE 1 Lithology, bedding, and mineralogy of samples ... ... more ... surface outcrop, open-cut mine 514 TABLE 1 Lithology, bedding, and mineralogy of samples ... 1) The recovery of distinctive morpho-types, consistent with other early Proterozoic microfossil ...Diagenesis of metals chemically com-plexed to bacteria: laboratory formation of metal ...
Two assemblages of organic-walled microfossils have been recognized in drillcore samples from the... more Two assemblages of organic-walled microfossils have been recognized in drillcore samples from the late Proterozoic Rodda Beds in the eastern Officer Basin, South Australia. The fossils include tube-like remains and large, simple and sculptured acritarchs. Lithostratigraphic studies and seismic information, in conjunction with previous (albeit limited) acritarch finds, allow local correlation of the Rodda Beds with Ediacaran or terminal Proterozoic sequences in the northern Adelaide Fold Belt (site of the nominated Ediacaran stratotype). The new palynofloras are comparable with acritarch assemblages in the Amadeus Basin of central Australia, and suggest tentative correlations with sequences in China and the U.S.S.R. The presence of isotopically heavy marine carbonate in the lower fossiliferous horizons of the Rodda Beds ((PC PDB = + 3 to +6% 0 ) is consistent with isotopic data from the equivalent interval in China. In contrast, the upper fossiliferous strata occur higher in the Rodda Beds where carbonate is significantly lighter (# 13 C PDB = -1 to + 3% o ).
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