Preprints
There are 7999 Preprints listed.
A Systematic Review of Toxic Metals Occurrences through Drinking Water in Ghana
Published: 2026-03-18
Subjects: Environmental Sciences
Toxic metals (TMs) are metallic contaminants that cause adverse health effects even at low exposure levels. Arsenic (As), Manganese (Mn), Lead (Pb), and Cadmium (Cd) are among these contaminants of concern, causing irreversible developmental damage to children (Pb), as well as cardiovascular disease (Pb) and cancers (As) in adults. Arsenic and Manganese are primarily geogenic groundwater [...]
Implications of impact-energy dependent erosional efficiency on bedrock river sediment dynamics and form: 1. Reach-scale dynamics and the effective flood
Published: 2026-03-09
Subjects: Earth Sciences, Geomorphology
Bedrock river incision reflects the cumulative geomorphic work performed across a distribution of flood magnitudes and frequencies. Mechanistic models of bedrock incision by bedload impacts typically assume that bedrock resistance to erosion is constant with respect to particle impact energy. However, recent impact experiments demonstrate that rock resistance to erosion decreases systematically [...]
Basal Melt Dominance in Grounding-Line Dynamics: SAR Interferometry Reveals How Ocean Thermal Forcing Outpaces Tidal and Seasonal Controls in Antarctic Ice Shelves
Published: 2026-02-18
Subjects: Earth Sciences, Geophysics and Seismology, Glaciology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
The grounding line hinge position for the Fimbul Ice Shelf (Antarctic Peninsula) was determined using Synthetic Aperture Radar (SAR) Interferometric data from June 2023 through October 2024. The data were used to determine the hinge position over eight different time intervals (i.e., SAR Pairs) at an average spatial resolution of 20 meters. The Fimbul Ice Shelf area of interest (AOI) was defined [...]
Mapping textures of polar ice cores using 3D laboratory X-ray microscopy
Published: 2025-06-20
Subjects: Climate, Earth Sciences, Glaciology
Deep ice cores from polar ice sheets enable reconstructions of Earth’s past climate. Ice-core records are therefore crucial for projecting future climate change, however, our ability to interpret them relies on our understanding of polycrystalline-ice microstructures and mechanics. In turn, these microstructures enable modeling of ice flow and large-scale effects of ice-sheet evolution. Since [...]
Dataset for Integrated Petrophysical Analysis and 3-D Geological Model Development of the Bakken Unconventional Reservoir (Sanish Field)
Published: 2026-05-10
Subjects: Engineering
The Bakken Formation in the Williston Basin remains one of the most unconventional plays in North America, yet accurate reservoir characterization continues to be challenged by significant lithological heterogeneity, particularly within the Middle Bakken and Three Forks intervals. This study presents an integrated petrophysical analysis and 3-D geocellular model development for the Sanish field, [...]
Experimental Investigation of Movement and Deposition of Woody-Debris Suspensions in Inclined Channel Tests
Published: 2026-03-16
Subjects: Earth Sciences, Engineering
Debris flows, which mobilize large volumes of water, sediment, and woody debris, pose significant risks to human communities and infrastructure. In wildfire-affected forested areas, the accumulation of woody debris in drainage channels is exacerbated, thereby increasing the potential for more hazardous debris flows. To examine the influence of woody debris on debris flow dynamics, an inclined [...]
Marine Heatwaves Disrupt Phytoplankton Communities Through Trait-dependent Selection
Published: 2026-05-24
Subjects: Biodiversity, Biogeochemistry, Climate, Marine Biology
Phytoplankton communities, key regulators of marine ecosystems and the global carbon cycle, are susceptible to sea surface temperature variability, such as marine heatwaves (MHWs). However, their trait-dependent responses and the resulting compositional shifts during MHWs remain poorly understood. Here, using an advanced global ocean–biogeochemical model that resolves 310 phytoplankton trait [...]
Using Global Climate Models to Inform Multi-Driver Biological Ocean Experiments
Published: 2026-10-16
Subjects: Biogeochemistry, Oceanography
This century, widespread shifts in temperature and CO2-driven acidification are projected for the surface ocean. Determining how ocean biota will respond to these changes requires scaling multiple drivers together because biological responses to one driver often depend on the conditions of the others. However, ocean temperature and carbonate chemistry vary across regions, seasons, and emissions [...]
Between extraction and protection: Public support for natural resource regulation and environmental governance across Africa, a continental analysis with West Africa as a case study
Published: 2026-04-24
Subjects: Environmental Studies
Natural resource extraction is central to development strategies across Africa, yet it generates persistent conflicts over environmental costs, benefit distribution, and governance legitimacy. Public attitudes toward this trade-off have remained largely unmeasured at the continental scale. This paper provides the first cross-national quantitative analysis of citizen preferences for environmental [...]
Hidden periodicity in LiDAR point-count rasters
Published: 2026-09-26
Subjects: Computer Sciences, Earth Sciences, Geophysics and Seismology, Numerical Analysis and Scientific Computing, Other Earth Sciences, Physical Sciences and Mathematics
LiDAR point-count rasters can contain regular stripes that are not present in the surveyed scene. They arise when the fixed step on which LAS files store coordinates, often 1 cm, interacts with the grid used to count points. We identify three mechanisms, grid mismatch, floating-point boundary rounding and uneven filling of stored positions, predict where each pattern appears and how strong it is, [...]
Slope-dependent riverbed strengthening and the evolution of the threshold for motion in gravel-bed rivers
Published: 2026-03-10
Subjects: Earth Sciences, Geomorphology, Hydrology
The threshold for motion exerts a fundamental control on sediment transport, channel morphology, and fluvial erosion. While channel slope and flow history are known to influence entrainment thresholds in gravel-bed rivers, their interaction has not been explored. We investigate how channel slope modulates riverbed strengthening during low-flow periods. Flume experiments were conducted across [...]
Theory and Conditions for AI-Based Inversion Paradigm of Geophysical Parameters Using Energy Balance
Published: 2024-12-08
Subjects: Engineering, Physical Sciences and Mathematics
To construct a universal artificial intelligence (AI) model for geophysical parameter inversion, this study proposes a new remote sensing parameter inversion paradigm theory by changing cognition to unify physical, statistical, and AI methods. In the AI era, deep learning serves as a macro-micro cognitive bridge, transforming remote sensing from classical physics to a quantum remote sensing [...]
Automating glacier facies classification: pan-European dataset and deep learning baseline
Published: 2026-01-27
Subjects: Artificial Intelligence and Robotics, Glaciology
Glacier facies play a critical role in understanding the mass balance of glaciers, offering insights into accumulation and melting processes. Large-scale mapping of glacier facies from satellite data is therefore essential for monitoring glacier response to climate change and informing climate policies. In this study, we present the largest glacier facies dataset ever compiled for Europe, [...]
Microphysical Evolution of Precipitation During Convective Storm Life-Cycles and Implications for Radar QPE: Combined Radar–Disdrometer Observations from Kolkata, Eastern India
Published: 2026-04-25
Subjects: Earth Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Through dedicated observations with a Joss–Waldvogel disdrometer at Dumdum (22.65°N, 88.43°E) and the S-band Doppler Weather Radar (DWR) (22.57°N, 88.35°E) over Kolkata, this study provides in-depth analysis of drop size distribution (DSD) evolution over each stage from initiation to decay of contrasting convective storms over Kolkata, eastern India due to its complicated terrain in monsoon [...]
Characterizing the interrelationships of commonly used water measures
Published: 2026-03-18
Subjects: Public Health
There are numerous commonly used measures of household water access that capture various dimensions of the household water experience, but it is unclear if individual variables are complementary, redundant, or uniquely informative. We characterized how measures of household water access are statistically and conceptually interrelated. Using data collected from 861 households in Beira, Mozambique [...]