Preprints
There are 5347 Preprints listed.
Last millennium climate variability in the Romanian Carpathians: a synthesis
Published: 2023-10-26
Subjects: Earth Sciences, Environmental Sciences
The Carpathian Mountains span Central and Eastern Europe and provide vital ecosystem functions and services. For this reason, the conservation status of the Carpathians is critical due to environmental pressures such as deforestation and the impacts of climate change, which has significantly affected the region's ecosystem dynamics and communities through increased frequency of floods and [...]
A Novel Approach for Predicting Large Wildfires Using Machine Learning Towards Environmental Justice via Environmental Remote Sensing and Atmospheric Reanalysis Data across the United States
Published: 2023-10-26
Subjects: Earth Sciences, Environmental Sciences
Large wildfires (>125 hectares) in the United States account for over 95% of the burned area each year. Predicting large wildfires is imperative, however, current wildfire predictive models are region-based and computationally intensive. Using a scalable model based on easily available environmental and atmospheric data, this research aims to accurately predict across the United States whether [...]
Impacts of the African Humid Period termination may have been delayed in the Atlantic Sahara
Published: 2023-10-24
Subjects: Earth Sciences, Environmental Sciences
The paleoenvironmental changes recorded at the Khnifiss Lagoon, on the Saharan Atlantic coast, southern Morocco, during the last 3.5 kyrs BP puts another piece to the puzzle on the intricate relationship between North Atlantic climate patterns and climate variations in Northwest Africa. This study shed light on the hydroclimatic dynamics during a pivotal climatic period: the transition from the [...]
Exploring Foundation Models for Seismic Event Processing
Published: 2023-10-24
Subjects: Physical Sciences and Mathematics
Nonproliferation monitoring efforts benefit from a glut of multi-modal data that related research must develop methods to process efficiently. Many of the highest performing methods for predictive modeling rely on a legacy of data curation and labeling that is available from decades of seismic catalog building but may not scale well for future uses. This work explores tools for predictive [...]
Pygoda: a graphical interface to efficiently visualise and explore large sets of geolocated time series
Published: 2023-10-24
Subjects: Categorical Data Analysis, Climate, Computer Sciences, Databases and Information Systems, Earth Sciences, Environmental Monitoring, Environmental Sciences, Environmental Studies, Fresh Water Studies, Geographic Information Sciences, Geophysics and Seismology, Glaciology, Graphics and Human Computer Interfaces, Hydrology, Longitudinal Data Analysis and Time Series, Meteorology, Other Earth Sciences, Other Statistics and Probability, Spatial Science
Modern-day data sets in geosciences may comprise hundreds or thousands of geolocated time series. Despite all the automated tools and new algorithms now available to process and prepare those data before using them in research projects, it can be useful or even necessary to visualise and investigate them manually. Whether it be for data quality assessment, for the preparation of a training data [...]
Can land-use and land-cover change explain reduced resilience in forests?
Published: 2023-10-24
Subjects: Forest Sciences
Generating signals of reduced resilience in ecosystems is crucial for conservation and management endeavors. However, the practical implications of such systems are still limited due to the lack of high-frequency data and uncertainties associated with predicting complex systems such as ecosystems. This study aims to investigate the potential of time series analysis of remote sensing data in [...]
Hydrological model skills change with drought severity; insights from multi-variable evaluation
Published: 2023-10-23
Subjects: Earth Sciences, Hydrology, Physical Sciences and Mathematics
Hydrological models often do not properly simulate streamflow (Q) during extreme events, including droughts. Limited abilities in simulating Q during droughts may arise from a misrepresentation of Q generating processes during these periods, but little research has focused on distributed, process-based models over human-affected areas and extreme events. To shed more light into model consistency [...]
Harnessing the Power of Rhizosphere Bacteria for Pollution Remediation: Strategies, Mechanisms, and Environmental Impact: A Minireview
Published: 2023-10-23
Subjects: Life Sciences
This present review provides an in-depth exploration of the burgeoning potential of rhizosphere bacteria as a formidable tool for pollution remediation within the context of contemporary scientific understanding. The rhizosphere, a soil region intimately associated with plant roots, encompasses a dynamic and diverse bacterial community renowned for its distinctive capabilities in mitigating a [...]
Reply to: Beyond microbial carbon use efficiency
Published: 2023-10-20
Subjects: Biogeochemistry, Earth Sciences
In their commentary, Xiao et al. cautioned that the conclusions on the critical role of microbial carbon use efficiency (CUE) in global soil organic carbon (SOC) storage in a paper by Tao et al. (2023) might be too simplistic. They claimed that Tao et al.’s study lacked mechanistic consideration of SOC formation and excluded important datasets. Xiao et al. brought up important points, which can [...]
Particulate nitrate photolysis as a possible driver of rising tropospheric ozone
Published: 2023-10-20
Subjects: Atmospheric Sciences
Tropospheric ozone is an air pollutant and a greenhouse gas whose anthropogenic production is limited principally by the supply of nitrogen oxides (NOx) from combustion. Tropospheric ozone in the northern hemisphere has been rising despite the flattening of NOx emissions in recent decades. Here we propose that this sustained increase could result from the photolysis of nitrate particles (pNO3-) [...]
Spatial standardization of taxon occurrence data—a call to action
Published: 2023-10-20
Subjects: Biodiversity, Ecology and Evolutionary Biology, Paleobiology, Paleontology, Statistical Methodology
The fossil record is spatiotemporally heterogeneous: taxon occurrence data have patchy spatial distributions, and this patchiness varies through time. Large-scale quantitative paleobiology studies that fail to account for heterogeneous sampling coverage will generate uninformative inferences at best and confidently draw wrong conclusions at worst. Explicitly spatial methods of standardization are [...]
A Deep Learning framework to map riverbed sand mining budgets in large tropical deltas
Published: 2023-10-20
Subjects: Computer Sciences, Earth Sciences, Environmental Education, Environmental Health and Protection, Environmental Monitoring, Environmental Sciences, Natural Resource Economics, Natural Resources and Conservation, Natural Resources Management and Policy, Other Environmental Sciences, Planetary Geomorphology, Planetary Sedimentology, Sustainability, Water Resource Management
Rapid urbanization has dramatically increased the demand for river sand, leading to soaring sand extraction rates that often exceed natural replenishment in many rivers globally. However, our understanding of the geomorphic and social-ecological impacts arising from Sand Mining (SM) remains limited, primarily due to insufficient data on sand extraction rates. Conventionally, bathymetry surveys [...]
Presence of Emerging Contaminants and Antibiotic Resistance Genes in Private Well Water
Published: 2023-10-19
Subjects: Environmental Sciences
Occurrence of emerging contaminants (ECs) including parent compounds, their metabolites, and antibiotic resistance genes (ARGs) and their relationships to common chemical and microbial indicators have rarely been investigated for private wells. In this study, occurrence of 109 parent compounds (ECs), 29 EC metabolites, and 15 ARGs were screened in private well water samples from 57 Southwest [...]
Poroelastic Properties of Sierra White Granite
Published: 2023-10-19
Subjects: Engineering
In this work, poroelastic properties of Sierra White granite are determined, including elastic moduli, Biot's effective stress coefficient, α, and Skempton’s pore pressure coefficient, B. The Biot’s coefficient of this rock was determined using two different approaches. It is found that overall, the Biot’s coefficient decreases from 0.77 at low effective stress (3~4 MPa) to 0.45~0.55 at high [...]
Detection of Hidden Low-Frequency Earthquakes in Southern Vancouver Island with Deep Learning
Published: 2023-10-19
Subjects: Physical Sciences and Mathematics
Low-frequency earthquakes (LFEs) are small-magnitude earthquakes that are depleted in high-frequency content relative to traditional earthquakes of the same magnitude. These events occur in conjunction with slow slip events (SSEs) and can be used to infer the space and time evolution of SSEs. However, because LFEs have weak signals, and the methods used to identify them are computationally [...]