Preprints
There are 7994 Preprints listed.
Report for the Puding Government on the China-UK Karst Knowledge Exchange Project
Published: 2018-12-13
Subjects: Environmental Sciences, Environmental Studies, Geography, Nature and Society Relations, Physical and Environmental Geography, Physical Sciences and Mathematics, Social and Behavioral Sciences, Water Resource Management
The report summaries the first stage output from the Knowledge Exchange (KE) research carried out in one of China’s rural areas in the karst landscape, aiming to understand the local knowledge sharing dynamic and learning preference of stakeholders. A social science survey was carried out in November 2016 in 7 villages of Puding County to 15 county leaders, 8 town leaders and 24 village leaders [...]
Tracing marine cryptotephras in the North Atlantic during the Last Glacial Period: Improving the North Atlantic marine tephra framework
Published: 2018-12-12
Subjects: Earth Sciences, Other Earth Sciences, Physical Sciences and Mathematics
Tephrochronology is increasingly being recognised as a key tool for the correlation of disparate palaeoclimatic archives, underpinning chronological models and facilitating climatically independent comparisons of climate proxies. Tephra frameworks integrating both distal and proximal tephra occurrences are essential to these investigations providing key information on their spatial distributions, [...]
Geological applications of digital terrain analysis
Published: 2017-11-01
Subjects: Earth Sciences, Geochemistry, Geographic Information Sciences, Geography, Geology, Geomorphology, Geophysics and Seismology, Physical Sciences and Mathematics, Remote Sensing, Social and Behavioral Sciences, Spatial Science, Tectonics and Structure, Volcanology
Editorial to the IJGIS Special Issue on "Geological applications of digital terrain analysis". In this volume, the modern advances in the field of geological terrain analysis are presented, while emphasis is given to the quantitative analysis of modern datasets.
Tracing marine cryptotephras in the North Atlantic during the Last Glacial Period: Identification, characterisation and depositional controls
Published: 2018-12-12
Subjects: Earth Sciences, Other Earth Sciences, Physical Sciences and Mathematics
Tephrochronology is increasingly being utilised as a key tool for improving chronological models and correlating disparate palaeoclimatic sequences. For many sedimentary environments, however, there is an increased recognition that a range of processes may impart a delay in deposition and/or rework tephra. These processes can affect the integrity of tephra deposits as time-synchronous markers, [...]
The Warnie Volcanic Province: A Jurassic Volcanic Province in Central Australia
Published: 2018-12-12
Subjects: Earth Sciences, Geology, Geophysics and Seismology, Physical Sciences and Mathematics, Stratigraphy, Volcanology
The Cooper and Eromanga Basins of South Australia and Queensland are the largest onshore hydrocarbon 9 producing region in Australia. Igneous rocks have been documented infrequently within end of well reports over 10 the past 34 years, with a late Triassic to Jurassic age determined from well data. However, the areal extent and 11 nature of these basaltic rocks were largely unclear. Here, we [...]
The retreat pattern of glaciers controls the occurrence of turbidity currents on high-latitude fjord deltas
Published: 2018-12-12
Subjects: Earth Sciences, Geology, Geomorphology, Glaciology, Physical Sciences and Mathematics, Sedimentology
Glacier and ice sheet mass loss as a result of climate change is driving important coastal changes in Arctic fjords. Yet, limited information exists for Arctic coasts regarding the influence of glacial erosion and ice mass loss on the occurrence and character of turbidity currents in fjords which themselves affect delta dynamics. Here, we show how glacial erosion and the production of meltwaters [...]
Separating the impact of individual land surface properties on the terrestrial surface energy budget in both the coupled and un-coupled land-atmosphere system
Published: 2018-12-12
Subjects: Climate, Earth Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Changes in the land surface can drive large responses in the atmosphere on local, regional, and global scales. Surface properties control the partitioning of energy within the surface energy budget to fluxes of shortwave and longwave radiation, sensible and latent heat, and ground heat storage. Changes in surface energy fluxes can impact the atmosphere across scales through changes in [...]
Rheological transitions facilitate fault-spanning ruptures on seismically active and creeping faults
Published: 2018-03-27
Subjects: Earth Sciences, Geology, Geophysics and Seismology, Physical Sciences and Mathematics
The apparent stochastic nature of earthquakes poses major challenges for earthquake forecasting attempts. Physical constraints on the seismogenic potential of major fault zones may aid in improving seismic hazard assessments, but the mechanics of earthquake nucleation and rupture are obscured by the complexity that faults display. In this work, we investigate the mechanisms behind giant [...]
Tectonic controls on deposition in the late Cambrian - Early Ordovician Central Andean Basin (Cordillera Oriental; northwest Argentina) – the first step towards an integrative reconstruction
Published: 2018-12-07
Subjects: Earth Sciences, Geology, Paleontology, Physical Sciences and Mathematics, Sedimentology, Stratigraphy
This study focuses on upper Cambrian – Lower Ordovician strata containing the lowermost fossil-bearing levels of the basin (Santa Rosita Formation and Guayoc Chico Group). Bounded by two major regional unconformities, this stratigraphic interval was previously considered as a retro-arc foreland basin displaying evidence of westward progradation without tectonic activity during its deposition. [...]
Early Last Interglacial ocean warming drove substantial ice mass loss from Antarctica
Published: 2018-12-07
Subjects: Earth Sciences, Glaciology, Physical Sciences and Mathematics
The future response of the Antarctic ice sheets to rising temperatures remains highly uncertain. A valuable analogue for assessing the sensitivity of Antarctica to warming is the Last Interglacial (129-116 kyr), when global sea level peaked 6 to 9 meters above present. Here we report a blue-ice record of ice-sheet and environmental change from the periphery of the marine-based West Antarctic Ice [...]
Submarine channels "swept" downstream after bend cutoff in salt basins
Published: 2018-12-08
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics
Channel-bend expansion and downstream translation, as well as vertical movements by aggradation and incision, set the stratigraphic architecture of channelized depositional systems. Early work on submarine-channel evolution has suggested that downstream translation is rare. We propose that downstream translation of bends might be common in deep-water salt-tectonic provinces, where complex [...]
No evidence for sea level fall in the Cretaceous strata of the Book Cliffs of Eastern Utah
Published: 2018-12-08
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics
A core component of the sequence stratigraphic model is the implicit assumption of a semi-sinusoidal relative sea-level curve, and the occurrence of “sequence boundaries” formed during intervals of sea-level fall, recognized primarily by the presence of incised valleys. Late Cretaceous paralic deposits in the Book Cliffs, Utah, have been one of the main testing and teaching grounds for [...]
Toward a unified approach to quantify uncertainties in sea-level projections
Published: 2018-12-07
Subjects: Earth Sciences, Other Earth Sciences, Physical Sciences and Mathematics
Coastal impacts of climate change and the related mitigation and adaptation needs requires assessments of future sea-level changes. Following a common practice in coastal engineering, probabilistic sea-level projections have been proposed for at least 20 years. This requires a probability model to represent the uncertainties of future sea-level rise, which is not achievable because potential ice [...]
Summary Report of China-UK Knowledge Exchange Project for Their Critical Zone Programme
Published: 2018-12-12
Subjects: Environmental Sciences, Environmental Studies, Geography, Nature and Society Relations, Physical and Environmental Geography, Physical Sciences and Mathematics, Social and Behavioral Sciences, Water Resource Management
Global to local environmental policy-making is increasingly evidenced-based. Knowledge exchange (KE) is increasingly used by environmental scientists and policymakers, to deliver evidence-based policy and practice. This study presents the output from the KE research project within the China-UK Critical Zone (CZ) programme in China from 2016 to 2018, focussing on understanding: (i) the key issues [...]
Evolving marginal terranes during Neoproterozoic supercontinent reorganisation: constraints from the Bemarivo Domain in northern Madagascar
Published: 2018-11-30
Subjects: Earth Sciences, Geochemistry, Geology, Physical Sciences and Mathematics, Tectonics and Structure
Madagascar is important for unravelling the geodynamic evolution of the transition between the Rodinia and Gondwana supercontinents as it contains several suites of c. 850–700 Ma magmatic rocks that have been postulated to correlate with other ex-Rodinia terranes. The Bemarivo Belt of northern Madagascar contains the youngest suite of these magmatic rocks that date to c. 750–700 Ma. We present [...]