Preprints
There are 6976 Preprints listed.
Taphonomic Controls on a Multi-Element Skeletal Fossil Record
Published: 2024-08-02
Subjects: Earth Sciences, Life Sciences, Paleobiology, Paleontology, Physical Sciences and Mathematics, Sedimentology
Animals with multi-element skeletons, including the vertebrates, echinoderms, and arthropods, are some of the most biodiverse and ecologically important animal groups. Understanding the relative impact of the myriad geological and biological factors which impact on the quality of multi-element skeletal fossils is thus crucial for disentangling perceived changes in biodiversity through time and [...]
Harmful Algal Bloom Prediction using Empirical Dynamic Modelling
Published: 2024-08-02
Subjects: Environmental Sciences
Harmful Algal Blooms (HABs) can originate from a variety of reasons, including water pollution coming from agriculture, effluent from treatment plants, sewage system leaks, pH and light levels, and the consequences of climate change. In recent years, HAB events have become a serious environmental problem, paralleling population growth, agricultural development, increasing air temperatures, and [...]
Denoising Daily Displacement GNSS-Time series using Deep Neural Networks In a Near Real-Time Framing: a Single-Station Method
Published: 2024-08-05
Subjects: Earth Sciences
Recent ground observations from Global Navigation Satellite Systems (GNSS) displacement time series have provided compelling evidence that the motion of tectonic plates is ubiquitously non-steady-state. In some cases, these anomalous transient motions have been identified as potential precursors occurring months, days, or hours before large-magnitude earthquakes. However, effectively detecting [...]
Survival of the brightest? pIRIR dating of volcanic sediments in Sulawesi, Indonesia, using micro-aliquots of K-rich feldspar
Published: 2024-08-05
Subjects: Earth Sciences
Volcanic sediments are challenging to date with luminescence-based methods. Both main minerals used for dating—quartz and K-rich feldspar—commonly have suboptimal luminescence properties when of volcanic origins, primarily a low signal intensity and, for K-rich feldspars, high rates of anomalous fading. The present work provides a case study of sediment samples from the Leang Bulu Bettue (LBB) [...]
Incongruent chemical weathering and adsorption of neodymium drive modulation of neodymium isotope composition of global riverine particulate matter
Published: 2024-08-07
Subjects: Physical Sciences and Mathematics
We report incongruent weathering and differential release of radiogenic neodymium (143Nd) to challenge the widely accepted congruent behaviour of Nd isotopes during weathering of rocks. Investigating two basaltic weathering profiles of the Rajmahal Volcanic Province in India, the incongruent behaviour of minerals and Nd isotopes were established. These results contradict the premise of invariant [...]
Considerations for CO2 storage in deep saline aquifers in tectonically active regions with implications for the Lower Mainland British Columbia (LMBC)
Published: 2024-08-17
Subjects: Engineering
Underground geological storage of carbon dioxide (CO2) has emerged as one of the most viable solutions for mitigating global carbon emissions during the transition to a net-zero economy. Within subsurface geological strata, saline aquifers and depleted oil and gas reservoirs are the primary targets for CO2 storage. However, in regions with limited oil and gas production operations, underground [...]
Intercomparison of satellite derived SST with logger data in the Caribbean – Implications for coral reef monitoring
Published: 2024-08-06
Subjects: Environmental Sciences
Since the early 1980s measurements of Sea Surface Temperature (SST) derived from satellite-borne instruments have provided a wide range of global gridded products documenting changes in SST. However, there are many sources of uncertainty in these records and significant differences exist among them. One use of these products is identification of coral bleaching events, and the predictions of the [...]
The impact of rural digitization on agricultural carbon emissions and its mechanism pathways
Published: 2024-08-06
Subjects: Environmental Studies
This paper utilizes provincial macro data from 2011 to 2020 to thoroughly investigate the impact of rural digitization on agricultural carbon emissions. The research findings reveal that rural digitization significantly reduces agricultural carbon emissions, a conclusion confirmed through robustness and endogeneity tests. Using a "technology effect-knowledge effect" logical framework, it is found [...]
Corporate social responsibility management and sustainability of a Peruvian agribusiness: analysis of invention, adaptability and organizational ambidexterity
Published: 2024-08-06
Subjects: Environmental Studies
This research article analyzes the management of corporate social responsibility and the sustainability of a Peruvian agribusiness, considering invention, adaptability and organizational ambidexterity. The importance of invention is highlighted to develop innovative practices that improve sustainability. Adaptability is crucial to respond to external changes and environmental regulations. [...]
Inadequate wastewater management in Dhaka's major hospitals: A Socio-Technical Systems (STS) analysis of leadership, policy, and technological challenges
Published: 2024-08-06
Subjects: Public Health
Unsafe hospital wastewater is a significant concern, especially in low- and middle-income countries (LMICs) where the health impact is often underreported. Socio-technical systems (STS) theory, which examines the interplay between social and technical elements within complex systems, is widely used in developed countries but rarely applied in LMIC hospitals. We employed STS theory to evaluate the [...]
A global C-staggered composite model for shallow water equations 1 with latitude-longitude grid and reductions in the polar regions
Published: 2024-08-08
Subjects: Applied Mathematics, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
To develop a numerical method for global geophysical fluids, we usually need to choose a spherical grid and numerical approximations to represent the partial derivative equations. Some alternatives include the use of finite differences or finite volumes with latitude-longitude or reduced grids. Each of these cases has some advantages and also some limitations. This paper presents a comparison [...]
The cyclical nature of normal fault growth: Insights from 4D analogue models
Published: 2024-08-10
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics, Tectonics and Structure
Exploring how normal faults evolve is important for understanding the dynamic processes underlying the initiation and evolution of rift systems. Early-stage fault growth has been largely under-explored due to resolution limitations in seismic reflection data and the lack of three-dimensional exposures in the field. Physical analogue modelling offers a unique way to visualize and analyse [...]
Be clever or be cold: repurposed ovens for space heating following global catastrophic infrastructure loss
Published: 2024-08-09
Subjects: Engineering, Mechanical Engineering
Global catastrophic infrastructure loss (GCIL) would disrupt energy supply networks, prohibiting heating in houses reliant on electricity or piped natural gas. Cold climates would require alternative heating methods, as space heating is critical to survival. This work assesses the viability of converting household appliances to wood-burning stoves, and the scalability of such conversions. A [...]
Audible and Infrasonic waves generated during the 2022 Hunga eruption: Observations from across Aotearoa New Zealand
Published: 2024-08-09
Subjects: Other Earth Sciences, Volcanology
The 15 January 2022 eruption of Hunga volcano (Kingdom of Tonga) featured one of the most powerful blasts in recent history, generating atmospheric acoustic phenomena observed around the world. Here we examine seismo-acoustic data of the eruption from across Aotearoa New Zealand, host of the densest network of seismo-acoustic sensors in the south-west Pacific. We find clear evidence for two [...]
The turbulent dynamics of anticyclonic submesoscale headland wakes
Published: 2024-08-10
Subjects: Oceanography
Flow interacting with bathymetry has been posited to be important for dissipation and mixing in the global ocean. Despite this, there are large uncertainties regarding mixing in these environments, particularly as it pertains to the role of submesoscale structures in the dynamics and energetics. In this work we study such flows with a series of Large-Eddy simulations of a submesoscale flow past a [...]