Preprints
There are 6976 Preprints listed.
Assessing the Impact of Wind Erosion in Baringo County, Kenya
Published: 2026-01-13
Subjects: Environmental Indicators and Impact Assessment, Geomorphology, Soil Science
Wind erosion poses substantial threats to soil health and agricultural productivity in arid and semi-arid environments globally. In response to the escalating environmental challenge of wind erosion, this study, centered in Baringo County, employs a blend of remote sensing and GIS techniques alongside the Revised Wind Erosion Equation (RWEQ) model. The study spans a 25-year period, with a main [...]
Generation of Random Geological Models Using Multi-Randomization for Machine Learning
Published: 2026-01-14
Subjects: Earth Sciences
EVALUATION OF WIND ENERGY RESOURCE: A COMPARATIVE STUDY OF EAST RIDING OF YORKSHIRE AND CORNWALL COUNCILS, UNITED KINGDOM
Published: 2026-01-17
Subjects: Engineering, Physical Sciences and Mathematics
This study aimed to assess the wind energy potential in the United Kingdom, focusing on the East Riding of Yorkshire and Cornwall Councils. A comparative analysis was conducted by sampling two weather stations from each region to obtain and analyze wind characteristics. The annual energy yield for both regions was calculated over a four-year period. Data analysis involved frequencies, averages, [...]
Global sediment transport intermittency is set by river planform
Published: 2026-01-14
Subjects: Earth Sciences, Geomorphology, Hydrology, Sedimentology
Patterns of water and sediment flux in rivers are key to understanding landscape responses to environmental change. Quantifying water intermittency in rivers (from perennial to ephemeral) provides vital context for interpreting long-term hydrographs and flood frequency, yet controls on corresponding sediment intermittency are poorly understood due to measurement challenges. We present the first [...]
A Simple Model for Tidally Forced Standing Waves in a Submarine Canyon
Published: 2026-01-17
Subjects: Physical Sciences and Mathematics
Submarine canyons are recognized as energetic sites for internal tides and enhanced mixing, yet the mechanisms by which tidal forcing excites these motions remain poorly understood. To address this gap, we develop a simplified theoretical model that represents a canyon as a long, narrow rectangular box. The analysis reveals that the dominant wave modes in this idealized geometry are standing [...]
Calcium promotes carbon rich grassland soils
Published: 2026-01-15
Subjects: Biogeochemistry
Dark colored grassland soils, known as Mollisols, are intensively farmed and exceptionally rich in organic matter, and hence have an important role in the carbon cycle. Elevated carbon storage in Mollisols may be facilitated by calcium (Ca) released by carbonate and silicate weathering. This synergy between carbon and Ca cycling has not been definitively quantified. To close this knowledge gap, [...]
Evidence of low watershed resilience across the Western United States
Published: 2026-01-16
Subjects: Environmental Indicators and Impact Assessment, Environmental Monitoring, Sustainability, Water Resource Management
Vulnerable waters, including headwater streams and non-floodplain wetlands, are essential to watershed level resilience but notoriously difficult to measure over large spatial scales. Although individually small, vulnerable waters as a whole are integral in regulating hydrologic and biogeochemical processes. In the relatively small proportion of vulnerable waters that are continuously monitored, [...]
Benchmarking analog and ensemble-based seasonal forecasting strategies for water management in the Upper Rio Grande basin
Published: 2026-01-17
Subjects: Earth Sciences, Hydrology
In the southwestern US, declining runoff efficiencies driven by a warming climate have undermined the skill of seasonal water supply forecast (WSF) methods used for reservoir management by local to federal agencies. Seasonal water allocations are often based on deterministic inflow sequences, derived by matching historical streamflow traces (analogs) to statistical WSF volumes; yet model-based [...]
A pilot study exploring the effect of vehicular waste heat on personal heat exposure
Published: 2026-01-17
Subjects: Civil and Environmental Engineering
Understanding the causes of heat in various microclimates in cities is vital to improving human thermal comfort and health in outdoor spaces. This pilot study uses an experimental design to evaluate microclimate heat risk – including ambient air temperature (TA) and wet bulb globe temperature (WBGT) – and approximate personal heat exposure of people 1.5-3.0 meters (5-10 feet) away from idling [...]
From Progress to Transformation: A Systems-Based Index for Measuring Agrifood Systems Transformation
Published: 2026-04-17
Subjects: International and Area Studies
This paper introduces the Agrifood Systems Transformation Index (AFSTI), a systems-based framework for measuring agrifood systems transformation as a multidimensional, goaloriented, and interdependent process. Existing measurement approaches often fail to capture the systemic nature of transformation, relying on fragmented indicators or additive aggregation methods that mask imbalance across key [...]
Use of Low Impact Development Systems to Enhance Recharge using Stormwater in a Heavily Groundwater-Depleted Region of the Gulf Coast Aquifer
Published: 2026-01-17
Subjects: Civil Engineering, Environmental Engineering, Hydrology, Sustainability, Water Resource Management
Water resources in the Houston Metropolitan Area, otherwise known as Greater Houston, have been under enormous stress for decades due to an increase in population and uncertain climate conditions. Rapid urbanization has also increased impervious cover, leading to excess stormwater runoff. Implementing managed aquifer recharge (MAR) through the use of low impact development (LID) strategies can [...]
A Benchmark Dataset of Agricultural Weather Stations over the Contiguous United States for Evapotranspiration Applications
Published: 2026-01-18
Subjects: Environmental Monitoring, Environmental Studies, Geographic Information Sciences, Hydrology, Water Resource Management
Agricultural weather data are fundamental for the accurate estimate of evapotranspiration (ET), irrigation scheduling, and water-use accounting. In particular, reference ET provides a standardized atmospheric demand for water loss from a hypothetical well-watered grass (ETo) or alfalfa (ETr); however, weather stations may not adequately represent such climatic conditions. Weather data commonly [...]
Defects, impurities and inclusion–host interfaces in diamond: an atomic-scale physico-chemical framework
Published: 2026-01-19
Subjects: Physical Sciences and Mathematics
The term “inclusion” is widely used in diamond research to describe internal features that differ fundamentally in their physical nature. In practice, atomic-scale lattice defects and chemically distinct foreign phases are frequently conflated, leading to ambiguity in the interpretation of microstructural observations. This paper presents a conceptual physico-chemical framework that distinguishes [...]
Prevalence and associated factors of microbial water quality from drinking water in Ethiopia: A Systematic Review and Meta-Analysis study
Published: 2026-04-17
Subjects: Public Health
Introduction Drinking water contamination is a worldwide problem and causes a major public health threat, with most water contamination prevalent in developing countries, including Ethiopia. There is no pooled overall prevalence of fecal coliform contamination and its contributing factors in drinking water in Ethiopia. Method The review was conducted under the Preferred Reporting Items for [...]
A detailed picture of Haiti’s seismicity given by deep learning and template matching
Published: 2026-01-20
Subjects: Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics
Haiti regularly experiences destructive earthquakes, but seismic monitoring in the region has historically been limited. Recent deployments of citizen-hosted RaspberryShake seismometers and temporary seismic deployment following the 2021 Mw 7.2 earthquake provide new data to study the region’s seismotectonics. However, high noise levels at many stations, in particular the RaspberryShake ones, [...]