A5014703303- Geology and Paleoclimatology Research
- Landslides and related hazards
- Karst Systems and Hydrogeology
- Fire effects on ecosystems
- Archaeology and ancient environmental studies
- Tree-ring climate responses
- Hydrology and Watershed Management Studies
- Cryospheric studies and observations
- Groundwater flow and contamination studies
- Coal Properties and Utilization
- Water Quality and Resources Studies
- Climate variability and models
- Groundwater and Isotope Geochemistry
- Maritime and Coastal Archaeology
- Geological formations and processes
- Groundwater and Watershed Analysis
- Hydrocarbon exploration and reservoir analysis
- Geophysics and Gravity Measurements
- Climate change and permafrost
- Thermochemical Biomass Conversion Processes
- Coal and Its By-products
- Pleistocene-Era Hominins and Archaeology
- Rangeland and Wildlife Management
- Pasture and Agricultural Systems
- Soil and Unsaturated Flow
Environmental Earth Sciences
2023-2024
UNSW Sydney
2022-2024
Australian Nuclear Science and Technology Organisation
2023
University College Dublin
2021
The University of Western Australia
2017-2020
The University of Queensland
2017
Pacific Northwest National Laboratory
1989
Abstract. Quantifying the amount of rainfall needed to generate groundwater recharge is important for sustainable management resources. Here, we quantify thresholds using drip loggers situated in a near-surface cave: Wildman’s cave at Wombeyan, southeast Australia. In just over two years monitoring, 42 potential events were identified cave, approximately 4 m below land surface which comprises 30° slope with 37 % bare rock. Recharge occurred within 48 hours rainfall. Using daily precipitation...
Abstract Annual resolution reconstructions of alpine temperatures are rare, particularly for the Southern Hemisphere, while no snow cover exist. These records essential to place in context impact anthropogenic global warming against historical major natural climate events such as Roman Warm Period (RWP), Medieval Climate Anomaly (MCA) and Little Ice Age (LIA). Here we show a marginal region Australia using carbon isotope speleothem reconstruction, over past five decades has experienced...
Abstract Resolving the hydrological processes that form speleothems and palaeo‐climate archives they contain is difficult. Typical approaches to investigation are not suited karst landscapes, geophysics seldom applied, drip monitoring modelling have limitations, ignoring potential impacts can result in a proxy record does reflect external environment. We aim understand controls created preserved speleothem (JC001) “Grotto of Oddities,” part Jersey Cave at Yarrangobilly Caves, Australia,...
Abstract Understanding past climate variability is critical to informing debate of likely impacts global warming on weather and climate, water resources. Here we present a near annual resolution reconstruction developed from speleothem that spans the Eemian [Marine Isotope Stage 5e (MIS 5e)] 117,500 123,500 years BP—the most recent period in Earth’s history when temperatures were similar those today. Using 25 Mg, 88 Sr, 137 Ba as proxies, show first indication solar teleconnection cyclic...
Abstract Palaeoclimate data relating to hydroclimate variability over the past millennia have a vital contribution make water sector globally. The industry faces considerable challenges accessing climate sets that extend beyond of historical gauging stations. Without this, around extremes floods and droughts is unknown stress-testing infrastructure design demands challenging. User-friendly access relevant palaeoclimate now essential, importantly, an efficient process determine which proxies...
Understanding past fire regimes and how they vary with climate, human activity, vegetation patterns is fundamental to the mitigation management of changing as anthropogenic climate change progresses. Ash-derived trace elements pyrogenic biomarkers from speleothems have recently been shown record activity in both Australia North America. This calls for an empirical study ash geochemistry aid interpretation speleothem palaeofire proxy records. Here we present analyses leached ashes collected...
Abstract Understanding past fire regimes and how they vary with climate, human activity, vegetation patterns is fundamental to the mitigation management of changing as anthropogenic climate change progresses. Ash‐derived trace elements pyrogenic biomarkers from speleothems have recently been shown record activity in both Australia North America. This calls for an empirical study ash geochemistry aid interpretation speleothem palaeofire proxy records. Here we present analyses leached ashes...
Understanding organic matter (OM) in cave mineral deposits (speleothems) is essential for interpreting land use and climatic changes, the incorporation of trace elements associated with compounds. However, sources composition OM speleothems are poorly understood due to challenges measuring at low concentrations destructive nature most speleothem analysis techniques. Synchrotron Fourier-transform infrared (FTIR) microspectroscopy a promising non-destructive technique that can be used...
Speleothems are calcium carbonate deposits formed by the degassing of high pCO2 groundwaters typically found in karstic caves. They a globally distributed geological archive that store information climate and environmental changes at time their formation multiple proxies, crucially, provide excellent age control through uranium- thorium dating methods going back to 500,000+ years seasonal multi-decadal resolutions.
Understanding the environmental context of speleothem palaeo-climate proxies is fundamental to their interpretation. We analyse four methodological approaches accomplish this: stalactite discharge analysis, proxy/process tracer studies, modelling, and geophysics. Datamining produced citation data sets that reflected these sub-disciplines. Social network analysis used examine co-authorship within between sub-disciplines, joint community broader proxy climate community. Members sub-disciplines...
Abstract We propose a Bayesian model which produces probabilistic reconstructions of hydroclimatic variability in Queensland Australia. The provides standardized approach to hydroclimate reconstruction using multiple palaeoclimate proxy records derived from natural archives such as speleothems, ice cores and tree rings. method combines time‐series modeling with inverse prediction quantify the relationships between given index relevant proxies over an instrumental period subsequently...
Stalagmites provide records of past changes in climate, vegetation, and surface events, which can be identified through variability their chemical composition over time. This is the result environmental properties, are reflected physical properties water that percolates into cave, ultimately affecting speleothem calcite. Wildfires have potential to alter soil soluble element concentrations. Consequently, stalagmite compositions been shown respond increases nutrients, trace metal...
Environmental proxy archives such as tree rings, sediment cores, and ice cores are commonly used to investigate past fire regimes. Speleothems, naturally forming cave decorations mainly comprising of stalagmites, stalactites, flowstones, have been extensively palaeoenvironmental their physical attributes chemical composition change with changed environment. Research has shown that drip water chemistry responds events, more recently, speleothems can record events due processes which alter...
From sediment cores to speleothems, environmental archives are helping us understand the history of wildfires.
We propose a Bayesian hierarchical model which produces probabilistic reconstructions of hydroclimatic variability in Queensland Australia. The provides standardised approach to hydroclimate reconstruction using multiple palaeoclimate proxy records derived from natural archives such as speleothems, ice cores and tree rings. method combines time-series modelling with inverse prediction quantify the relationships between given index relevant proxies over an instrumental period subsequently...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Reviews of Geophysics. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Speleothems as Archives Palaeofire ProxiesAuthorsMichelineCampbelliDLizaMcDonoughiDPaulineTrebleAndyBakeriDNevenaKosaracKatieColebornPeter MichaelWynnAxelSchmittSee all authors...