Preprints
There are 5755 Preprints listed.
Simulated Soil Respiration is Sensitive to Soil Hydraulic Properties from Intact vs. Repacked Cores
Published: 2025-07-06
Subjects: Biogeochemistry, Hydrology, Soil Science
Soil hydraulic properties, such as water retention and hydrodynamics, play a pivotal role in regulating belowground carbon (C) storage by influencing microbial activity and nutrient availability. However, empirical measurements of these properties are labor-intensive and often fail to replicate field conditions in laboratory settings. Standardizing and increasing the throughput of hydraulic [...]
Embedding Symbolic Power in the Relational Turn
Published: 2025-07-05
Subjects: Environmental Studies
Understanding how nature’s values become institutionalised, while others are marginalised, is central to advancing sustainability transformations. The relational turn in sustainability science is centred around the coconstitutive dynamics of human–nature relationships. Yet, it has so far paid limited attention to the power relations that shape which values gain legitimacy or are marginalised. We [...]
Could seismo-volcanic catalogues be improved or created using weakly supervised approaches with pre-trained systems?
Published: 2025-07-04
Subjects: Engineering, Physical Sciences and Mathematics
Real-time monitoring of volcano-seismic signals is complex. Typically, automatic systems are built by learning from large seismic catalogs, where each instance has a label indicating its source mechanism. However, building complete catalogs is difficult owing to the high cost of data-labelling. Current machine learning techniques have achieved great success in constructing predictive monitoring [...]
Satellite Remote Sensing-Based Crop Cover Classification over Europe: Accuracy of Different Methodological Approaches
Published: 2025-07-04
Subjects: Agriculture, Earth Sciences
Crop maps play an important role in a variety of applications, from calculating crop areas and forecasting food production quantities to the analysis of agri-environmental interactions, highlighting the necessity of timely and accurate information on agricultural land use. The availability of remote sensing data has permitted numerous crop classification studies, which have investigated a variety [...]
Aquascan: Graph-Based Learning for Distributed Marine Sensing
Published: 2025-07-04
Subjects: Artificial Intelligence and Robotics, Computer Sciences, Environmental Monitoring, Environmental Sciences, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics, Water Resource Management
Marine monitoring faces unprecedented challenges as climate change and human activities reshape ocean ecosystems. Traditional tracking methods struggle with the scale and complexity of modern marine sensing needs. This paper proposes distributed networks of low-cost drifting sensors and presents a comparative study of heterogeneous graph neural networks (GNNs) versus Kalman filters for predicting [...]
The Subseasonal North Atlantic Oscillation is a Quasi-Semiannual, Propagating Disturbance
Published: 2025-07-04
Subjects: Atmospheric Sciences, Climate
The North Atlantic Oscillation (NAO) is a well-studied mode of regional climate variability, associated with fluctuations in sea-level pressure (SLP), storm tracks, and the North Atlantic jet. These fluctuations have been perceived as a seesawing between two climatic phases, one corresponding to a more poleward jet and the other to a more equatorward. However, recent work has shown that zonal [...]
Hydro3DJS: A Modular Web-Based Library for Real-Time 3D Visualization of Watershed Dynamics and Digital Twin Integration
Published: 2025-07-03
Subjects: Graphics and Human Computer Interfaces, Hydrology
Effective visualization of hydrological data is critical for addressing challenges such as flood risk, water resources management, and climate adaptation. This study introduces Hydro3DJS, a modular, web-based 3D visualization library that integrates real-time environmental data with interactive digital twin capabilities. Developed using JavaScript, WebGL, and Google Maps API, the tool enables [...]
Spatial Analysis of Lead (Pb) Contamination in Soils of the Savar Industrial Zone, Bangladesh Using QGIS-Based Interpolation
Published: 2025-07-03
Subjects: Earth Sciences, Environmental Health and Protection, Environmental Sciences, Life Sciences, Physical Sciences and Mathematics
Lead (Pb) contamination poses significant environmental and public health risks in industrial regions. This study employs Geographic Information Systems (GIS) to assess the spatial distribution of Pb in soils across the Savar industrial zone, Bangladesh—an area characterized by dense industrial activity, including tanneries, textile mills, and metal-processing plants. Using point data from ten [...]
Spatial Analysis and Heatmap Visualization of Groundwater Arsenic Contamination in Dhaka and Mymensingh Divisions, Bangladesh
Published: 2025-07-03
Subjects: Earth Sciences, Environmental Sciences, Life Sciences, Physical Sciences and Mathematics, Physiology
Arsenic contamination in groundwater poses a critical public health threat in Bangladesh, particularly in its central and northern regions. This study investigates the spatial distribution of arsenic concentrations across the Dhaka and Mymensingh divisions using geospatial clustering and interpolation techniques. A total of 1,124 groundwater samples were analyzed using Python-based spatial [...]
Crevasse locations and meltwater delivery to the bed in Pakitsoq, Greenland: Results from MimiNet, a new deep-learning model for crevasse detection
Published: 2025-07-03
Subjects: Physical Sciences and Mathematics
If surface crevasse fields deliver meltwater to the bed of the Greenland Ice Sheet, it would affect seasonal ice flow speeds and total mass balance. Whether they do is not currently known; some evidence suggests so, while specific field data suggest not. To address this gap, we develop MimiNet, a neural-network-based tool that identifies surface crevasse fields. We train MimiNet on Sentinel-1 [...]
River Network HyperGraphs and Transportation Network HyperGraphs: A Graph-Theoretic Approach for Geoscientific and Civil Applications
Published: 2025-07-03
Subjects: Applied Mathematics, Civil Engineering, Environmental Studies, Life Sciences, Mathematics, Other Life Sciences, Other Mathematics, Physical Sciences and Mathematics, Social and Behavioral Sciences
River Network Graphs and Transportation Network Graphs are classical models that represent river systems and transportation infrastructures as vertices and edges, respectively, and underpin applications in hydrological simulation, watershed management, shortest-path computation, and urban traffic analysis. In this paper, we extend these graph-based models into the hypergraph and superhypergraph [...]
Simultaneous spectral induced polarization and X-ray µCT imaging to investigate pore-scale dynamics and geoelectrical responses in porous media
Published: 2025-07-03
Subjects: Engineering, Physical Sciences and Mathematics
Understanding the interplay between pore-scale fluid distribution and bulk electrical properties is critical to improving petrophysical models of partially saturated porous media. This study introduces and evaluates a novel experimental setup that enables synchronized spectral induced polarization (SIP) and X-ray micro-computed tomography (µCT) measurements under dynamic saturation conditions. A [...]
Hydraulic Fracturing in a Confined Space System: Stress State, Fracture Space, and Production Enhancement Mechanism
Published: 2025-07-03
Subjects: Engineering, Mining Engineering
Existing mechanical models for hydraulic fracturing technology are established based on open space systems, assuming fractures are primarily formed through tensile failure. However, the source mechanism of newly created fracture space under confined space conditions with constant total volume remains unclear. This study develops a mechanical model for hydraulic fracturing in confined space [...]
More than a buzzword? Mapping interpretations of the 'polycrisis'
Published: 2025-07-03
Subjects: Social and Behavioral Sciences
“Polycrisis” leapt from Davos into everyday policy talk, yet its meaning remains fluid and sometimes contradictory. To take stock, we asked fifty experts to sort key statements, and Q-method analysis revealed four distinct framings. All agree that polycrisis spills across sectors and borders and reject the view that polycrisis is a mere buzzword. They diverge, however, on how much faith to place [...]
On the demise of Whistler, Horstman and Blackcomb Glaciers, southwest British Columbia, Canada: historical use, recent change and future prospects within a mountain resort
Published: 2025-07-03
Subjects: Earth Sciences, Glaciology, Physical Sciences and Mathematics
Atmospheric warming is causing glaciers worldwide to retreat and disappear, with repercussions for nearby communities. Effects of glacier retreat have been especially consequential for mountain resorts such as Whistler Blackcomb, Canada, where almost 60 years of summer glacier use has been terminated due to the ongoing demise of Whistler, Horstman and Blackcomb Glaciers. Over the past five [...]