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Notes On The Early Devonian Brachiopod Leptaena Ouralensis De Verneuil, 1845, Anthony J. Wright
Notes On The Early Devonian Brachiopod Leptaena Ouralensis De Verneuil, 1845, Anthony J. Wright
Faculty of Science, Medicine and Health - Papers: part A
On the basis of the type material, an attempt is made to review the widely reported brachiopod Leptaena ouralensis de Verneuil, 1845, much more commonly known as Megastrophia uralensis (de Verneuil, 1845). Assignment of this species to Megastrophia is still tentative, and many reports of the species, especially those based on crack-out material, must remain doubtful. The species has an established narrow geographic and stratigraphic range to the upper Emsian (upper Lower Devonian) of mostly Siberia, Mongolia and China.
The Itsaq Gneiss Complex Of Greenland: Episodic 3900 To 3660 Ma Juvenile Crust Formation And Recycling In The 3660 To 3600 Ma Isukasian Orogeny, Allen P. Nutman, Vickie C. Bennett, Clark R. L Friend, Hiroshi Hidaka, Keewook Yi, Seung Ryeol Lee, Tomoyuki Kamiichi
The Itsaq Gneiss Complex Of Greenland: Episodic 3900 To 3660 Ma Juvenile Crust Formation And Recycling In The 3660 To 3600 Ma Isukasian Orogeny, Allen P. Nutman, Vickie C. Bennett, Clark R. L Friend, Hiroshi Hidaka, Keewook Yi, Seung Ryeol Lee, Tomoyuki Kamiichi
Faculty of Science, Medicine and Health - Papers: part A
From the 3000 km2 Eoarchean Itsaq Gneiss Complex (IGC) of Greenland, zircon U-Pb dating of numerous meta-granitoid and orthogneiss samples is integrated with geologic observations, whole rock geochemistry and a strategic subset of zircon Hf and whole rock Nd isotopic measurements. This shows that there are multiple episodes of TTG suite formation from ∼3890 to 3660 Ma, characterized by zircon initial εHf≈0 and whole rock initial εNd of > +2. These rocks mostly have geochemical signatures of partial melting of eclogitized mafic sources, with a subset of high magnesian, low silica rocks indicating fusion by fluid fluxing of upper mantle sources. …
The Emergence Of The Eoarchaean Proto-Arc: Evolution Of A C. 3700 Ma Convergent Plate Boundary At Isua, Southern West Greenland, Allen Phillip Nutman, Vickie C. Bennett, Clark R L Friend
The Emergence Of The Eoarchaean Proto-Arc: Evolution Of A C. 3700 Ma Convergent Plate Boundary At Isua, Southern West Greenland, Allen Phillip Nutman, Vickie C. Bennett, Clark R L Friend
Faculty of Science, Medicine and Health - Papers: part A
Eoarchaean juvenile crust formed as ‘proto-arcs’. The northern side of the Isua supracrustal belt is an archetypal proto-arc, with ≥3720 Ma boninites, c. 3720 Ma basalts and gabbros, 3720–3710 Ma andesites, diorites and mafic tonalites, 3710–3700 Ma intermediate-felsic volcanic and sedimentary rocks and 3700–3690 Ma chemical sedimentary rocks. On its northern side there is an extensive body of 3700–3690 Ma tonalite. During its evolution, the c. 3700 Ma Isua volcanic–sedimentary assemblage was partitioned into tectonic slices, with intercalation of mantle dunites with pillow basalts, prior to intrusion of c. 3710 Ma quartz diorites. Partitioning also occurred at 3690–3660 Ma, when …
Middle Carboniferous-Early Triassic Eclogite-Blueschist Blocks Within A Serpentinite Mélange At Port Macquarie, Eastern Australia: Implications For The Evolution Of Gondwana's Eastern Margin, Allen P. Nutman, Solomon Buckman, Hiroshi Hidaka, Tomoyuki Kamiichi, Elena Belousova, Jonathan Aitchison
Middle Carboniferous-Early Triassic Eclogite-Blueschist Blocks Within A Serpentinite Mélange At Port Macquarie, Eastern Australia: Implications For The Evolution Of Gondwana's Eastern Margin, Allen P. Nutman, Solomon Buckman, Hiroshi Hidaka, Tomoyuki Kamiichi, Elena Belousova, Jonathan Aitchison
Faculty of Science, Medicine and Health - Papers: part A
The New England Orogen of easternmost Australia is dominated by suites of Palaeozoic to earliest Mesozoic rocks that formed in supra-subduction zone settings at Gondwana's eastern margin. On the northern New South Wales coast at Rocky Beach, Port Macquarie, a serpentinite mélange carries rare tectonic blocks of low-grade, high-pressure, metamorphic rocks derived from sedimentary and igneous protoliths. Dominant assemblages are glaucophane. +. phengite. ±. garnet. ±. lawsonite. ±. calcite. ±. albite blueschists and lawsonite-bearing retrogressed garnet. +. omphacite eclogites. In some blocks with sedimentary protoliths, eclogite forms folded layers within the blueschists, which is interpreted as Mn/(Mn. +. Fe) compositional …
Determining The Impact Of The Holocene Highstand At The Coastal-Fluvial Interface, Shoalhaven River, South-Eastern Australia, Stephanie J. Kermode, Martin R. Gibling, Brian G. Jones, Tim J. Cohen, David M. Price, James S. Daley
Determining The Impact Of The Holocene Highstand At The Coastal-Fluvial Interface, Shoalhaven River, South-Eastern Australia, Stephanie J. Kermode, Martin R. Gibling, Brian G. Jones, Tim J. Cohen, David M. Price, James S. Daley
Faculty of Science, Medicine and Health - Papers: part A
With enhanced rates of sea-level rise predicted for the next century, the upstream extent of sea-level influence across coastal plains is a topic of public importance. Australian coastal rivers provide a testing ground for exploring this issue because the area is tectonically stable, was not glaciated, and experienced a Holocene highstand between 7.4 and 2ka of up to 1.5m above Australian Height Datum (AHD). In the Shoalhaven River of New South Wales, investigation of a confined bedrock reach at Wogamia, 32km inland, has identified a unit of dark, cohesive silt and sand with marine diatoms, shell fragments, and enhanced pyrite …
Polycyclic Evolution Of Camboriú Complex Migmatites, Santa Catarina, Southern Brazil: Integrated Hf Isotopic And U-Pb Age Zircon Evidence Of Episodic Reworking Of A Mesoarchean Juvenile Crust, Miguel Angelo Stipp Basei, Mario Da Costa Campos Neto, Angela Pacheco Lopes, Allen Phillip Nutman, Dunyi Liu, Kei Sato
Polycyclic Evolution Of Camboriú Complex Migmatites, Santa Catarina, Southern Brazil: Integrated Hf Isotopic And U-Pb Age Zircon Evidence Of Episodic Reworking Of A Mesoarchean Juvenile Crust, Miguel Angelo Stipp Basei, Mario Da Costa Campos Neto, Angela Pacheco Lopes, Allen Phillip Nutman, Dunyi Liu, Kei Sato
Faculty of Science, Medicine and Health - Papers: part A
The Camboriú Complex is the only gneissic-migmatitic inlier within the Neoproterozoic Brusque Group supracrustal rocks, in the northernmost part of the Dom Feliciano Belt, southern Brazil. It comprises the Morro do Boi migmatites and the diatexitic Ponta do Cabeço Granite. Zircon U-Pb dating of migmatites and associated granitic neosomes shows that crustal evolution started in the Paleo- Mesoarchean (3.3-3.0 Ga), continued with events through the Neoarchean and Paleoproterozoic and ended in the Neoproterozoic (0.64-0.61 Ga). Integration of zircon Hf isotopic data and U-Pb ages indicate that juvenile crustal accretion was restricted to the Archean and that afterwards intracrustal reworking predominated. …
Removal Of Trace Organic Contaminants By Nitrifying Activated Sludge And Whole-Cell And Crude Enzyme Extract Of Trametes Versicolor, Shufan Yang, Faisal I. Hai, Long D. Nghiem, Felicity Roddick, William E. Price
Removal Of Trace Organic Contaminants By Nitrifying Activated Sludge And Whole-Cell And Crude Enzyme Extract Of Trametes Versicolor, Shufan Yang, Faisal I. Hai, Long D. Nghiem, Felicity Roddick, William E. Price
Faculty of Science, Medicine and Health - Papers: part A
The resistance of certain anthropogenic trace organic contaminants (TrOCs) to conventional wastewater treatment and their potential adverse effects on human and ecological health raise significant concerns and have prompted research on their bioremediation by white-rot fungi. This study compared the removal efficiencies of four widespread TrOCs: carbamazepine (CBZ), sulfamethoxazole (SMX), bisphenol A (BPA) and diclofenac (DCF), by nitrifying activated sludge as well as whole-cell and extracellular enzyme (laccase) extract of the white-rot fungus Trametes versicolor. Fungal whole-cell culture removed only BPA and DCF but with high efficiencies (>90%) while the mixed nitrifying culture removed all compounds, although by levels …
Factors Driving Mercury Variability In The Arctic Atmosphere And Ocean Over The Past 30 Years, Jenny A. Fisher, Daniel J. Jacob, Anne L. Soerensen, Helen M. Amos, Elizabeth S. Corbitt, David G. Streets, Qiaoqiao Wang, Robert M. Yantosca, Elsie M. Sunderland
Factors Driving Mercury Variability In The Arctic Atmosphere And Ocean Over The Past 30 Years, Jenny A. Fisher, Daniel J. Jacob, Anne L. Soerensen, Helen M. Amos, Elizabeth S. Corbitt, David G. Streets, Qiaoqiao Wang, Robert M. Yantosca, Elsie M. Sunderland
Faculty of Science, Medicine and Health - Papers: part A
[1] Long-term observations at Arctic sites (Alert and Zeppelin) show large interannual variability (IAV) in atmospheric mercury (Hg), implying a strong sensitivity of Hg to environmental factors and potentially to climate change. We use the GEOS-Chem global biogeochemical Hg model to interpret these observations and identify the principal drivers of spring and summer IAV in the Arctic atmosphere and surface ocean from 1979–2008. The model has moderate skill in simulating the observed atmospheric IAV at the two sites (r ~ 0.4) and successfully reproduces a long-term shift at Alert in the timing of the spring minimum from May to April …
Earth Is (Mostly) Flat: Apportionment Of The Flux Of Continental Sediment Over Millennial Time Scales, Jane K. Willenbring, Alexandru T. Codilean, Brandon Mcelroy
Earth Is (Mostly) Flat: Apportionment Of The Flux Of Continental Sediment Over Millennial Time Scales, Jane K. Willenbring, Alexandru T. Codilean, Brandon Mcelroy
Faculty of Science, Medicine and Health - Papers: part A
We use a new compilation of global denudation estimates from cosmogenic nuclides to calculate the apportionment and the sum of all sediment produced on Earth by extrapolation of a statistically significant correlation between denudation rates and basin slopes to watersheds without denudation rate data. This robust relationship can explain approximately half of the variance in denudation from quartz-bearing topography drained by rivers using only mean slopes as the predictive tool and matches a similar fit for large river basins. At slopes >200 m/km, topography controls denudation rates. Controls on denudation in landscapes where average slopes are 10 mm/k.y. We use …
Assessing Reef Island Response To Environmental Conditions On The Gbr, Sarah Hamylton, Marjetta Puotinen
Assessing Reef Island Response To Environmental Conditions On The Gbr, Sarah Hamylton, Marjetta Puotinen
Faculty of Science, Medicine and Health - Papers: part A
Reef island cays form through the deposition of sediment as a result of wave trains converging across reef platforms and, at the regional scale, are influenced by a range of oceanographic and physical environmental factors. Preliminary results of a spatial modeling exercise applied to 103 reef islands are presented, demonstrating that variation in island area and volume can be accurately expressed as a function of latitudinal and cross-shelf gradients in regional oceanographic factors (exposure to incident waves, tidal range and the frequency of tropical cyclones) and local physical factors (position on the shelf, area of supporting reef platform, area of …
Bioregional Assessment Project: Sydney Metropolitan, Southern Rivers And Hawkesbury-Nepean Catchments: Data Collation Phase To Study The Impact Of Mining Activity And Coal Seam Gas On Environmental Assets, John Bradd, Tim Cohen, Sam Marx, Sol Buckman, Emma Burkhardt, A Clarke, Nicole Cook, Stephen Cullen, James Daley, Alexi Gavin, Ren Hu, Emma Kiekebosch-Fitt, Matt Lemcke, Andrew Lowe, Thomas Mcmahon, Luke Mcneilage, Kaitlyn O'Mara, Garth Nagle, Sam Robson, Carolyn Silveri, Joe Stammers
Bioregional Assessment Project: Sydney Metropolitan, Southern Rivers And Hawkesbury-Nepean Catchments: Data Collation Phase To Study The Impact Of Mining Activity And Coal Seam Gas On Environmental Assets, John Bradd, Tim Cohen, Sam Marx, Sol Buckman, Emma Burkhardt, A Clarke, Nicole Cook, Stephen Cullen, James Daley, Alexi Gavin, Ren Hu, Emma Kiekebosch-Fitt, Matt Lemcke, Andrew Lowe, Thomas Mcmahon, Luke Mcneilage, Kaitlyn O'Mara, Garth Nagle, Sam Robson, Carolyn Silveri, Joe Stammers
Faculty of Science, Medicine and Health - Papers: part A
This study was commissioned by the Hawkesbury-Nepean (HNCMA), Sydney Metropolitan (SMCMA) and Southern Rivers (SRCMA) Catchment Management Authorities and undertaken by the University of Wollongong to collate existing data and to provide a preliminary assessment of the potential impacts of coal seam gas (CSG) and coal mining activities on environmental assets within the three CMA regions, where environmental assets were defined under three broad themes; water, land and biodiversity. This study formed part of the Australian Federal Government’s Department of Sustainability, Environment, Water, Population and Communities (SEWPaC) Bioregional Assessment initiative within regions potentially affected by CSG and coal mining activities. …
The Significance Of Carbon-Enriched Dust For Global Carbon Accounting, Nicholas P. Webb, Adrian Chappell, Craig L. Strong, Samuel K. Marx, Granth Mctainsh
The Significance Of Carbon-Enriched Dust For Global Carbon Accounting, Nicholas P. Webb, Adrian Chappell, Craig L. Strong, Samuel K. Marx, Granth Mctainsh
Faculty of Science, Medicine and Health - Papers: part A
Soil carbon stores amount to 54% of the terrestrial carbon pool and twice the atmospheric carbon pool, but soil organic carbon (SOC) can be transient. There is an ongoing debate about whether soils are a net source or sink of carbon, and understanding the role of aeolian processes in SOC erosion, transport and deposition is rudimentary. The impacts of SOC erosion by wind on the global carbon budget, and its importance for carbon accounting remain largely unknown. Current understanding of SOC losses to wind erosion is based on the assumption that the SOC content of eroded material is the same …
Selective Transport Of Cadmium By Pvc/Aliquat 336 Polymer Inclusion Membranes (Pims): The Role Of Membrane Composition And Solution Chemistry, Sandra Adelung, Burkhard Lohrengel, Long Duc Nghiem
Selective Transport Of Cadmium By Pvc/Aliquat 336 Polymer Inclusion Membranes (Pims): The Role Of Membrane Composition And Solution Chemistry, Sandra Adelung, Burkhard Lohrengel, Long Duc Nghiem
Faculty of Science, Medicine and Health - Papers: part A
This study investigated the extraction and stripping performance of PIMs consisting of PVC and Aliquat 336. Extraction and stripping of three representative heavy metals - namely Cd2+, Cu2+, and Zn2+ - by the synthesized membranes were evaluated as a function of sodium chloride concentration and under different stripping solutions (0.01 M HNO3, Milli-Q water, 0.01 M HCl, and 0.01 M NaOH), respectively. Results reported here indicate that the formation of negatively charged metal chloride complex species was responsible for the extraction of the target metal to PIMs. Experimental results and thermodynamic modeling of the speciation of chloro metal complexes further …
Sciamachy Wfm-Doas Xco2: Comparison With Carbontracker Xco2 Focusing On Aerosols And Thin Clouds, J Heymann, O Schneising, Markus Reuter, M Buchwitz, V V. Rozanov, Voltaire A. Velazco, H Bovensmann, J P. Burrows
Sciamachy Wfm-Doas Xco2: Comparison With Carbontracker Xco2 Focusing On Aerosols And Thin Clouds, J Heymann, O Schneising, Markus Reuter, M Buchwitz, V V. Rozanov, Voltaire A. Velazco, H Bovensmann, J P. Burrows
Faculty of Science, Medicine and Health - Papers: part A
Carbon dioxide (CO2) is the most important greenhouse gas whose atmospheric loading has been significantly increased by anthropogenic activity leading to global warming. Accurate measurements and models are needed in order to reliably predict our future climate. This, however, has challenging requirements. Errors in measurements and models need to be identified and minimised. In this context, we present a comparison between satellite-derived column-averaged dry air mole fractions of CO2, denoted XCO2, retrieved from SCIAMACHY/ENVISAT using the WFM-DOAS (weighting function modified differential optical absorption spectroscopy) algorithm, and output from NOAA's global CO2 modelling and assimilation system CarbonTracker. We investigate to what …
Constraints On Instantaneous Ozone Production Rates And Regimes During Domino Derived Using In-Situ Oh Reactivity Measurements, V Sinha, J Williams, J M. Diesch, F Drewnick, M Martinez, H Harder, E Regelin, Dagmar Kubistin, H Bozem, Z Hosaynali-Beygi, H Fischer, M D. Andres-Hernandez, D Kartal, J A. Adame, J Lelieveld
Constraints On Instantaneous Ozone Production Rates And Regimes During Domino Derived Using In-Situ Oh Reactivity Measurements, V Sinha, J Williams, J M. Diesch, F Drewnick, M Martinez, H Harder, E Regelin, Dagmar Kubistin, H Bozem, Z Hosaynali-Beygi, H Fischer, M D. Andres-Hernandez, D Kartal, J A. Adame, J Lelieveld
Faculty of Science, Medicine and Health - Papers: part A
In this study air masses are characterized in terms of their total OH reactivity which is a robust measure of the "reactive air pollutant loading". The measurements were performed during the DOMINO campaign (Diel Oxidant Mechanisms In relation to Nitrogen Oxides) held from 21/11/2008 to 08/12/2008 at the Atmospheric Sounding Station - El Arenosillo (37.1° N-6.7° W, 40 m a.s.l.). The site was frequently impacted by marine air masses (arriving at the site from the southerly sector) and air masses from the cities of Huelva (located NW of the site), Seville and Madrid (located NNE of the site). OH reactivity …
Anthropogenic Factors And Nutrient Variability Along The Coral Coast, Fiji, Ulukalesi Tamata, John Morrison
Anthropogenic Factors And Nutrient Variability Along The Coral Coast, Fiji, Ulukalesi Tamata, John Morrison
Faculty of Science, Medicine and Health - Papers: part A
Coral reefs the world over are being threatened by anthropogenic factors, one of the most significant being nutrient enrichment of the coastal waters. The Coral Coast region, in south-western Viti Levu, Fiji, has undergone very rapid development since the 1970s. Observations by local communities and the few sporadic studies conducted in the area have shown progressive degradation of the fringing reefs and deterioration of the water quality. In the present study, while water column nutrient concentrations showed high variability, averages over a long period of monitoring showed clear associations between anthropogenic effects and water quality. Nutrient concentrations were highly variable, …
Reef-Scale Assessment Of Intertidal Large Benthic Foraminifera Populations On One Tree Island, Great Barrier Reef And Their Future Carbonate Production Potential In A Warming Ocean, Steve S. Doo, Sarah Hamylton, Maria Byrne
Reef-Scale Assessment Of Intertidal Large Benthic Foraminifera Populations On One Tree Island, Great Barrier Reef And Their Future Carbonate Production Potential In A Warming Ocean, Steve S. Doo, Sarah Hamylton, Maria Byrne
Faculty of Science, Medicine and Health - Papers: part A
Populations of large benthic foraminiferans (LBFs) that inhabit coral reef platforms are major producers of calcium carbonate (CaCO3) in reef ecosystems. This study documented the population density of living intertidal LBF populations at One Tree Reef (OTR), southern Great Barrier Reef, in a community dominated by Marginopora vertebralis and Baculogypsina sphaerulata. Densities of 7.7 × 103 M. vertebralis individuals (ind.)/m2 and 4.5 × 105 B. sphaerulata ind./m2 were estimated for these populations in May 2011. We applied remote-sensing technology to determine reef-scale estimates of suitable Foraminifera habitats and used these to estimate overall stocks of LBF populations on the intertidal …
Quantitative Characterization Of Emissions From Biomass Burning Using Remote Sensing Measurements, Clare Paton-Walsh, Emma Young, David Griffith
Quantitative Characterization Of Emissions From Biomass Burning Using Remote Sensing Measurements, Clare Paton-Walsh, Emma Young, David Griffith
Faculty of Science, Medicine and Health - Papers: part A
We present a new method for deriving total emissions estimates from large vegetation fires using satellite-based measurements of aerosol optical depth. This method is based upon simultaneous measurements of total column amounts of trace gases and aerosol optical depth of the atmosphere through smoke plumes from Australian fires. These measurements were derived from ground-based solar remote sensing spectrometers in the infrared and UV-visible spectral regions and also provide emission ratios that may be used in more conventional bottom-up estimates of total emissions. Measurements of emissions from Australian forest fires are relatively sparse given the significance of this source to the …
The Atmospheric Chemistry Box Model Caaba/Mecca-3.0, R Sander, A Baumgaertner, S Gromov, H Harder, P Jöckel, A Kerkweg, Dagmar Kubistin, E Regelin, H Riede, Adrian Sandu, D Taraborrelli, H Tost, Zhi Xie
The Atmospheric Chemistry Box Model Caaba/Mecca-3.0, R Sander, A Baumgaertner, S Gromov, H Harder, P Jöckel, A Kerkweg, Dagmar Kubistin, E Regelin, H Riede, Adrian Sandu, D Taraborrelli, H Tost, Zhi Xie
Faculty of Science, Medicine and Health - Papers: part A
We present version 3.0 of the atmospheric chemistry box model CAABA/MECCA. In addition to a complete update of the rate coefficients to the most recent recommendations, a number of new features have been added: chemistry in multiple aerosol size bins; automatic multiple simulations reaching steady-state conditions; Monte-Carlo simulations with randomly varied rate coefficients within their experimental uncertainties; calculations along Lagrangian trajectories; mercury chemistry; more detailed isoprene chemistry; tagging of isotopically labeled species. Further changes have been implemented to make the code more user-friendly and to facilitate the analysis of the model results. Like earlier versions, CAABA/MECCA-3.0 is a community model …
Investigating The Glacial History Of The Northern Sector Of The Cordilleran Ice Sheet With Cosmogenic 10be Concentrations In Quartz, Arjen P. Stroeven, Derek Fabel, Alexandru T. Codilean, Johan Kleman, John J. Clague, Maria Miguens-Rodriguez, Sheng Xu
Investigating The Glacial History Of The Northern Sector Of The Cordilleran Ice Sheet With Cosmogenic 10be Concentrations In Quartz, Arjen P. Stroeven, Derek Fabel, Alexandru T. Codilean, Johan Kleman, John J. Clague, Maria Miguens-Rodriguez, Sheng Xu
Faculty of Science, Medicine and Health - Papers: part A
Exposure durations of glacial landforms in widely separated areas of central Yukon Territory affected by the northern sector of the Cordilleran Ice Sheet (CIS) and alpine glaciers have been determined using cosmogenic 10Be in quartz. The aim of our research is to test previous reconstructions of glacial history and to begin to address the paucity of chronological control for the lateral and vertical extent of the northern CIS. Chronological evidence for CIS expansion predating the Last Glacial Maximum comes from minimum surface exposure durations of c 100 ka for two bedrock samples within the Reid glacial limit, indicating a possible …
Morpho Tectonic Units Of The Zagros Orogenic Belt, Ne Iraq: A Modern Analogue For Subduction Accretion Processes, Sarmad A. Ali, Brian Jones, Solomon Buckman, Sabah Ismail, Khalid Aswad
Morpho Tectonic Units Of The Zagros Orogenic Belt, Ne Iraq: A Modern Analogue For Subduction Accretion Processes, Sarmad A. Ali, Brian Jones, Solomon Buckman, Sabah Ismail, Khalid Aswad
Faculty of Science, Medicine and Health - Papers: part A
The Zagros Mountain Belt extends over more than 1800 km through Iraq and southern Iran in front of the Zagros Mountain chain. It forms the boundary between the Iranian Plateau and the Mesopotamian and Gulf basins (Fig. 1). It can be subdivided geomorphologically into: the High Zagros Belt and the Zagros Simply Folded Belt separated by the High Zagros Fault (Berberian and King, 1981; Falcon, 1974; Stockline, 1968). From a tectonic point of view, however, five zones along the length of the Zagros Orogenic Belt can be distinguished (e.g. Stocklin, 1974, 1986; Falcon, 1974; Sten, 1985; Berberian, 1995): the Zagros …
A New Late Devonian Brachiopod Fauna From New South Wales, Anthony J. Wright, Jiaxin Yan
A New Late Devonian Brachiopod Fauna From New South Wales, Anthony J. Wright, Jiaxin Yan
Faculty of Science, Medicine and Health - Papers: part A
No abstract provided.
Hydroxyl Radicals In The Tropical Troposphere Over The Suriname Rainforest: Comparison Of Measurements With The Box Model Mecca, Dagmar Kubistin, H Harder, M Martinez, M Rudolf, R Sander, H Bozem, G Eerdekens, H Fischer, C Gurk, T Klupfel, R Konigstedt, U Parchatka, C L. Schiller, A Stickler, D Taraborrelli, J Williams, J Lelieveld
Hydroxyl Radicals In The Tropical Troposphere Over The Suriname Rainforest: Comparison Of Measurements With The Box Model Mecca, Dagmar Kubistin, H Harder, M Martinez, M Rudolf, R Sander, H Bozem, G Eerdekens, H Fischer, C Gurk, T Klupfel, R Konigstedt, U Parchatka, C L. Schiller, A Stickler, D Taraborrelli, J Williams, J Lelieveld
Faculty of Science, Medicine and Health - Papers: part A
As a major source region of the hydroxyl radical OH, the Tropics largely control the oxidation capacity of the atmosphere on a global scale. However, emissions of hydrocarbons from the tropical rainforest that react rapidly with OH can potentially deplete the amount of OH and thereby reduce the oxidation capacity. The airborne GABRIEL field campaign in equatorial South America (Suriname) in October 2005 investigated the influence of the tropical rainforest on the HOx budget (HOx = OH + HO2). The first observations of OH and HO2 over a tropical rainforest are compared to steady state concentrations calculated with the atmospheric …
Hydroxyl Radicals In The Tropical Troposphere Over The Suriname Rainforest: Airborne Measurements, M Martinez, H Harder, Dagmar Kubistin, M Rudolf, G Eerdekens, H Fischer, T Klupfel, C Gurk, R Konigstedt, U Parchatka, C L. Schiller, A Stickler, J Williams, J Lelieveld
Hydroxyl Radicals In The Tropical Troposphere Over The Suriname Rainforest: Airborne Measurements, M Martinez, H Harder, Dagmar Kubistin, M Rudolf, G Eerdekens, H Fischer, T Klupfel, C Gurk, R Konigstedt, U Parchatka, C L. Schiller, A Stickler, J Williams, J Lelieveld
Faculty of Science, Medicine and Health - Papers: part A
Direct measurements of OH and HO2 over a tropical rainforest were made for the first time during the GABRIEL campaign in October 2005, deploying the custom-built HORUS instrument (HydrOxyl Radical measurement Unit based on fluorescence Spectroscopy), adapted to fly in a Learjet wingpod. Biogenic hydrocarbon emissions were expected to strongly reduce the OH and HO2 mixing ratios as the air is transported from the ocean over the forest. However, surprisingly high mixing ratios of both OH and HO2 were encountered in the boundary layer over the rainforest. The HORUS instrumentation and calibration methods are described in detail and the measurement …
Cosmogenic 21ne Analysis Of Individual Detrital Grains: Opportunities And Limitations, Alexandru T. Codilean, Paul Bishop, Trevor B. Hoey, Finlay M. Stuart, Derek Fabel
Cosmogenic 21ne Analysis Of Individual Detrital Grains: Opportunities And Limitations, Alexandru T. Codilean, Paul Bishop, Trevor B. Hoey, Finlay M. Stuart, Derek Fabel
Faculty of Science, Medicine and Health - Papers: part A
We use a numerical model describing cosmogenic nuclide acquisition in sediment moving through the upper Gaub River catchment to evaluate the extent to which aspects of source area geomorphology and geomorphological processes can be inferred from frequency distributions of cosmogenic 21Ne (21Nec) concentrations in individual detrital grains. The numerical model predicts the pathways of sediment grains from their source to the outlet of the catchment and calculates the total 21Nec concentration that each grain acquires along its pathway. The model fully accounts for variations in nuclide production due to changes in latitude, altitude and topographic shielding and allows for spatially …
Surface And Boundary Layer Exchanges Of Volatile Organic Compounds, Nitrogen Oxides And Ozone During The Gabriel Campaign, L Ganzeveld, G Eerdekens, G Feig, H Fischer, H Harder, R Konigstedt, Dagmar Kubistin, M Martinez, F X. Meixner, H A. Scheeren, V Sinha, D Taraborrelli, J Williams, J Vila-Guerau De Arellano, J Lelieveld
Surface And Boundary Layer Exchanges Of Volatile Organic Compounds, Nitrogen Oxides And Ozone During The Gabriel Campaign, L Ganzeveld, G Eerdekens, G Feig, H Fischer, H Harder, R Konigstedt, Dagmar Kubistin, M Martinez, F X. Meixner, H A. Scheeren, V Sinha, D Taraborrelli, J Williams, J Vila-Guerau De Arellano, J Lelieveld
Faculty of Science, Medicine and Health - Papers: part A
We present an evaluation of sources, sinks and turbulent transport of nitrogen oxides, ozone and volatile organic compounds (VOC) in the boundary layer over French Guyana and Suriname during the October 2005 GABRIEL campaign by simulating observations with a single-column chemistry and climate model (SCM) along a zonal transect. Simulated concentrations of O3 and NO as well as NO2 photolysis rates over the forest agree well with observations when a small soil-biogenic NO emission flux was applied. This suggests that the photochemical conditions observed during GABRIEL reflect a pristine tropical low-NOx regime. The SCM uses a compensation point approach to …
Calculation Of The Cosmogenic Nuclide Production Topographic Shielding Scaling Factor For Large Areas Using Dems, Alexandru T. Codilean
Calculation Of The Cosmogenic Nuclide Production Topographic Shielding Scaling Factor For Large Areas Using Dems, Alexandru T. Codilean
Faculty of Science, Medicine and Health - Papers: part A
The recent surge of applications using terrestrial cosmogenic nuclides (TCNs) to calculate catchment-averaged erosion rates from isotopic concentrations in fluvial sediment, and the prospect of coupling TCN production functions with numerical surface process models (SPMs), necessitate a fast and accurate algorithm for the calculation of topographic shielding. Topographic shielding refers to the proportion of the incoming cosmic radiation that is shielded by the surrounding topography, the scaling factor being defined as the ratio of the unshielded (total minus shielded) to the total (or maximum) cosmic ray flux (i.e. the flux received by a horizontal, unobstructed surface). Topography contributes to the …
Observation Of Nondegenerate Cavity Modes For A Distorted Cavity Modes For A Distorted Polystyrene Microsphere, Adam J. Trevitt, Philip J. Wearne, Evan J. Bieske, Michael D. Schuder
Observation Of Nondegenerate Cavity Modes For A Distorted Cavity Modes For A Distorted Polystyrene Microsphere, Adam J. Trevitt, Philip J. Wearne, Evan J. Bieske, Michael D. Schuder
Faculty of Science, Medicine and Health - Papers: part A
Nondegenerate azimuthal morphology-dependent resonances are observed for a distorted, fluorescently labeled polystyrene microsphere levitated in a quadrupole ion trap. Modeling the individual resonances by using perturbation theory allows a determination of quadrupole and octupole distortion parameters. The particle’s shape changes slowly over the course of the measurement and eventually becomes spherical. The morphological changes are facilitated by laser heating of the particle above the polystyrene glass transition temperature. We demonstrate a method of transforming a trapped particle to a sphere and rendering its azimuthal modes degenerate.
Surface Process Models And The Links Between Tectonics And Topography, Alexandru T. Codilean, Paul Bishop, Trevor B. Hoey
Surface Process Models And The Links Between Tectonics And Topography, Alexandru T. Codilean, Paul Bishop, Trevor B. Hoey
Faculty of Science, Medicine and Health - Papers: part A
Advances in the theoretical understanding of large-scale tectonic and surface processes, along with a rapid growth of computing technology, have stimulated interest in the use of numerical surface process models (SPMs) of long-term landscape evolution, especially in relation to the links between tectonics and topography. Because of these advances and possibilities and because SPMs continue to play an important part in recent geological, geomorphological, thermochronological and other geosciences research, the models warrant review and assessment. This review summarizes and evaluates the important issues concerning SPMs of long-term landscape evolution that have been addressed only in a passing way by previous …
Llandovery (Early Silurian) Graptolites From The Quidong Basin, Nsw, R B. Rickards, R A. Parkes, Anthony J. Wright
Llandovery (Early Silurian) Graptolites From The Quidong Basin, Nsw, R B. Rickards, R A. Parkes, Anthony J. Wright
Faculty of Science, Medicine and Health - Papers: part A
Late Llandovery (Early Silurian) graptolites from several localities in the Merriangaah Siltstone, Quidong Basin, southern NSW, are described as Monograptus priodon (Bronn, 1835), Oktavites falx (Suess, 1851) and Oktavites bodentoeriensis Loydell, 2003. This is the first use of the generic name Oktavites in Australia. The firm age for this fauna to the spiralis graptolite Biozone and new age data from the Quidong Limestone place a maximum age for the unconformity between the Siltstone and the overlying Quidong Limestone, constraining the Quidongan Orogeny between the latest part of the Llandovery and the late or latest Wenlock.