Preprints
There are 7999 Preprints listed.
Problems of Global Ocean Averages and Integrals
Published: 2026-07-10
Subjects: Physical Sciences and Mathematics
The ocean circulation exhibits a great regional variation in the temporal behavior of physical parameters such as temperature or salt or carbon. Some of the variety is very familiar, e.g. equatorial versus mid-latitude, but in addition much heterogeneity appears within those very large-scale geographical regions. Questions arise in computing and understanding the meaning of such quantities as the [...]
Elevated in-situ Vp/Vs preceding hydraulic-fracturing-induced earthquakes
Published: 2026-02-04
Subjects: Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics
Effective management of seismic hazard in geo-energy development demands real-time estimates of subsurface fault instability. However, real-time monitoring of pore pressure change during subsurface fluid injection remains challenging. Here, we present a novel high-resolution, non-tomographic monitoring strategy that tracks the ratio of seismic wave speeds (Vp/Vs) as a proxy for pore pressure [...]
The First Aminostratigraphies for the Quaternary of the Swiss Plateau
Published: 2024-02-08
Subjects: Analytical Chemistry, Earth Sciences, Geochemistry, Other Earth Sciences, Stratigraphy
Here we develop an amino acid chronology to help establish a dated sequence for the important Early Pleistocene Höhere and Tiefere Deckenschotter morphostratigraphic units, as well as other Middle and Late Pleistocene deposits from across the Swiss Plateau. The intra-crystalline protein decomposition (IcPD) in a variety of calcium carbonate biominerals (including novel and rarely-analysed taxa) [...]
Legacy brewery phosphorus as a management constraint in the Mashapaug Watershed: unresolved reservoirs and pathways in an urban pond cascade
Published: 2026-05-20
Subjects: Physical Sciences and Mathematics
Spectacle and Mashapaug Ponds have been listed as impaired waters in Rhode Island since 2002, with 20 public-health advisories issued since 2011. Phosphorus is treated as the primary limiting nutrient for harmful algal blooms in the watershed, and Spectacle Pond is the largest direct phosphorus source to Mashapaug Pond and the lower pond cascade. In February 2026, the Rhode Island Department of [...]
Learning unresolved coastal dynamics in hydrodynamic models
Published: 2026-05-02
Subjects: Fluid Dynamics, Oceanography
Coastal hydrodynamic models play a vital role in understanding and predicting flooding, but practical computational constraints and uncertainties in boundary conditions and bathymetry lead to systematic errors in local sea level. We show that much of this error is not random but reflects a stable, site-specific response that can be learned from model output and observations. We develop a [...]
Observing the Non-Optically Active: An Observability Budget for Inferring Stormwater BMP Nitrogen-Removal Performance from Earth Observation
Published: 2026-07-16
Subjects: Environmental Engineering
Some regulatory load-accounting programs credit distributed stormwater best management practices (BMPs) using standardized, type-based nitrogen-removal efficiencies, yet field records show highly variable removal with at most a weak age signal. Earth observation (EO) can map aspects of a practice's physical condition, such as open-water extent and vegetation, and may provide indirect [...]
Coupled THM Processes Drive Spatiotemporal Slip Evolution in Fracture Networks during Geothermal Heat Production
Published: 2026-05-18
Subjects: Engineering
Understanding induced fracture slip in geothermal reservoirs requires clarifying the relative roles of rapid pore pressure propagation and slower cooling-related stress redistribution. We investigate this problem using coupled thermo-hydro-mechanical simulations with explicitly represented discrete fracture networks embedded in a poroelastic rock matrix. The study considers three fracture density [...]
Multidimensional Inconsistency in Forest Ecosystem Representation: An NLP-Assisted Thematic Review
Published: 2026-05-13
Subjects: Earth Sciences, Environmental Sciences, Environmental Studies, Geography
Forest ecosystem monitoring increasingly relies on multisensor remote sensing approaches integrating optical imagery, synthetic aperture radar (SAR), and LiDAR observations to assess biomass, degradation, and ecosystem condition. However, these systems frequently generate inconsistent representations of the same ecosystem due to differences in sensor sensitivity, ecological complexity, scale [...]
Closing the Digital Gap in Nigerian Land Records: An Open-Source QGIS Plugin for Cadastral Survey Archiving and Spatial Management
Published: 2026-05-03
Subjects: Geographic Information Sciences, Geography, Human Geography, Nature and Society Relations, Other Geography, Physical and Environmental Geography, Remote Sensing, Spatial Science
Secure, retrievable cadastral records are foundational to land tenure security and effective land administration, yet most private cadastral surveying firms in Nigeria maintain survey records exclusively on paper, a structural limitation that prevents spatial querying, concurrent access, and long-term integrity verification across the 50-year archival period required by the Survey Co-ordination [...]
Mineral stabilization of soil organic sulfur at the continental scale
Published: 2026-06-01
Subjects: Biogeochemistry, Life Sciences, Physical Sciences and Mathematics, Soil Science
Declining atmospheric sulfur (S) deposition makes S an emerging limiting macronutrient to plants, yet the stability and dynamics of soil organic S - the largest terrestrial S pool supplying plant-available sulfate via mineralization - remain unclear. Across North American soils, mineral-associated organic S (MAOS), a stabilized pool by mineral protection, dominates (61 ± 26% of the total soil S) [...]
Remotely sensed evapotranspiration for corporate water stewardship: Opportunities and limitations in agricultural landscapes
Published: 2026-05-07
Subjects: Earth Sciences, Environmental Sciences, Hydrology, Natural Resources and Conservation, Sustainability, Water Resource Management
Corporate water stewardship (CWS), in which companies engage in or incentivize actions to advance sustainable water management, can positively affect water resources, reduce water-related business risks, and support Environmental, Social, and Governance (ESG) and sustainability reporting. Agricultural landscapes affect diverse industries including finance, technology, fuel production, insurance, [...]
Surrogate-Assisted Bayesian Inference of Fracture Network Parameters from Elastic Waves: A Sensitivity-Guided Approach
Published: 2026-05-18
Subjects: Engineering
We develop a sensitivity-guided, surrogate-assisted Bayesian framework to infer fracture network parameters from elastic waves. Synthetic fracture networks characterized by power-law length exponent \(a\), fracture density \(d\), and percolation parameter \(p\) are constructed. Elastic wave propagation through these fracture networks is then simulated across a range of dimensionless specific [...]
Emerging climate–yield re-coupling in overexploited date palm oases: satellite evidence from a 22-year temporal decoupling index in southern Tunisia
Published: 2026-05-14
Subjects: Engineering
Southern Tunisia's date palm oases have quadrupled production over two decades while extracting fossil groundwater at more than twice the sustainable rate, a trajectory whose consequences remain undetected by conventional monitoring. We analysed the 2002–2024 satellite, climate, and ground record across four governorates to test whether this irrigation buffer — the aquifer's capacity to absorb [...]
Vehicle-Based Methane Detection, Attribution, and Quantification in the Upstream Oil and Gas Sector: Method Overview and Controlled Release Validation
Published: 2026-05-04
Subjects: Environmental Sciences
Vehicle-based measurement systems occupy an important niche in the multi-scale methane measurement landscape between component-level technologies (e.g. OGI) and aerial-based methods. Performance evaluations are often limited to one dimension (e.g. quantification), while methodological opacity limits interpretation and inter-comparisons between technologies. Here, we develop a vehicle-based [...]
A Multi-Dimensional Framework for Diagnosing Inconsistencies in Remote Sensing-Based Ecosystem Assessment
Published: 2026-05-04
Subjects: Environmental Sciences, Environmental Studies, Geography
Remote sensing-based ecosystem assessment increasingly relies on the integration of spectral, structural, and model-derived datasets; however, inconsistencies among these data sources can produce divergent representations of vegetation dynamics and carbon processes. This study proposes a multi-dimensional framework to diagnose such inconsistencies by integrating scale, dimensional, and variable [...]