Preprints
There are 7999 Preprints listed.
Spatio-temporal accessibility modelling with mobile and GTFS data: Insights from Helsinki
Published: 2025-12-22
Subjects: Social and Behavioral Sciences
This paper presents a spatially explicit method for evaluating urban accessibility using anonymised mobile phone origin-destination data combined with GTFS-based public transport travel times. Focusing on the Helsinki Capital Region, we apply cumulative and potential accessibility metrics across multiple transport modes to assess spatial and temporal variation in mobility patterns. The [...]
HydroVerse Education: An AI-Assisted Education Framework for Immersive Learning and Training Environments
Published: 2025-12-22
Subjects: Adult and Continuing Education, Computer Engineering, Educational Methods, Engineering Education, Environmental Education, Environmental Engineering, Environmental Sciences
Hydroinformatics education has traditionally been constrained by pedagogical approaches that fail to adequately convey the complexity of water systems. Virtual Reality (VR) presents a transformative solution by enabling interactive and experiential learning. This study introduces HydroVerse Education, an immersive virtual classroom environment designed to modernize hydroinformatics education by [...]
Governing transboundary river barriers: adaptive management challenges in South and Southeast Asia
Published: 2025-08-30
Subjects: Environmental Health and Protection, Environmental Monitoring, Hydrology, Sustainability, Terrestrial and Aquatic Ecology, Water Resource Management
Bulk iron-sulfur ratio (Fe/S) conditional proxy for sulfurized, TOC-rich sediments: insights and comparison of compositional model with real data utilizing the Pyrite-TOC-Fe-S compositional space
Published: 2026-10-04
Subjects: Earth Sciences, Geochemistry, Geology, Physical Sciences and Mathematics
Bulk iron-sulfur (Fe/S) ratio can be a proxy for sulfurized organic matter in organic-rich shales, particularly those prone to be siliceous or carbonate. First part uses a theoretical model of a compositional system consisting solely of iron, sulfur, TOC, and pyrite to demonstrate how the Fe/S ratio can indicate the presence of sulfurized organic matter using the model’s assumption of sulfur [...]
Assessing the effects of restoration and conservation on gaseous carbon fluxes and climate mitigation potential across six European coastal wetlands
Published: 2025-12-23
Subjects: Biogeochemistry, Climate, Earth Sciences, Fresh Water Studies
Coastal wetlands play a substantial role in regulating Earth’s climate through exchanges of greenhouse gases (GHGs). Current European policies promote widespread coastal wetland restoration to reverse historical losses and ongoing pressures. However, substantial uncertainty remains regarding how carbon dioxide (CO2) and methane (CH4) fluxes respond to restoration across different coastal wetland [...]
Pyrogeography of extraordinary wildfires
Published: 2025-12-23
Subjects: Earth Sciences
Extraordinary wildfires – defined by anomalous fire behaviour, physical attributes, paleo-ecological context, spatiotemporal scales, or consequences – have emerged as defining features of the global wildfire crisis. Extraordinary wildfires have profound impacts on ecosystems, climate, air quality, and human societies. In this Review, we characterise key dimensions of extraordinary wildfires, [...]
DYCOVE: A Python package for coupling dynamic vegetation processes with hydro-morphodynamic models
Published: 2025-12-23
Subjects: Earth Sciences, Physical Sciences and Mathematics
Vegetation growth in coastal environments plays an important role in shaping coastal morphology (Kirwan et al., 2016; Kleinhans et al., 2018; Mariotti & Fagherazzi, 2010; Schwarz et al., 2018; Temmerman et al., 2005, 2007). Hydrodynamic and morphodynamic (numerical) models are used widely for understanding the processes that impact coastal systems, and they inform management strategies for [...]
Climate mitigation benefits emerge within a decade
Published: 2025-12-23
Subjects: Physical Sciences and Mathematics
Discernible differences in global climate responses under varying greenhouse gas emission scenarios are commonly assumed to emerge only after 20 to 30 years. Here we show that mitigation benefits are detectable within a decade (9±6 years) over the global land area when high-resolution gridded climate data are analysed with a machine learning approach. By retaining spatial information, we uncover [...]
Health Impacts of Climate Change on Children and Adolescents: A Protocol for Review of Reviews
Published: 2025-12-23
Subjects: Public Health
Introduction Climate change is a contemporary phenomenon of a grave concern to the global public health. Climate change events like extreme heat, rising sea levels, floods, food insecurity and others, significantly affect local, regional, and global life conditions. The climate crisis affects the health of the elderly, adults, workers, children and adolescents. However, climate change events are [...]
Topographies, and Geoid/Gravity Anomalies from Global Mantle Flow Models
Published: 2025-12-24
Subjects: Physical Sciences and Mathematics
Seasonal and Spatial Assessment of the Urban Heat Island Effect and Land Surface Temperature in Nagpur Using Landsat Remote Sensing
Published: 2025-12-24
Subjects: Remote Sensing, Spatial Science
Urban Heat Island (UHI) intensity and Land Surface Temperature (LST) variations are critical indicators of urban environmental change in rapidly growing cities. This study examines spatial and temporal UHI and LST patterns in Nagpur using Landsat 8 and 9 thermal imagery for January and May of 2023 and 2024, capturing seasonal and inter-annual variations. Supervised classification was applied to [...]
Large Earthquakes: a Way of Formation and Prediction
Published: 2025-12-26
Subjects: Geophysics and Seismology, Tectonics and Structure
It is believed that the accumulation of small fractures (small earthquakes) in the crust is one of many ways for the formation of large fractures (large earthquakes). In such cases, the temporal variations in the accumulation number of small earthquakes can be used to predict future seismic activity in the region. To do so, a structural system of the crust is constructed using the logarithmic [...]
GIFIS: A Generalized Immersive Flood Information System Specification
Published: 2025-12-27
Subjects: Environmental Monitoring, Other Computer Sciences, Water Resource Management
This study introduces Generalized Immersive Flood Information Specification (GIFIS), a vendor-agnostic, JSON Schema–based framework for encoding, validating, and exchanging hydrologic and environmental data for reproducible and interoperable virtual and augmented reality applications. By defining standardized semantics for entities such as sensor datasets, hydrological model outputs, warnings and [...]
Spatial Patterns of Glacier Meltwater and Mountain Wetland Connectivity in the Peruvian Andes
Published: 2025-12-27
Subjects: Civil and Environmental Engineering, Hydrology, Statistical Models
High-altitude wetlands are critical ecosystems that store water, regulate downstream flows, and sustain biodiversity. Their persistence is tightly linked to continuous water inputs from precipitation, groundwater, snow and glacier melt, making them highly vulnerable to climate-driven shifts in mountain hydrology. Rapid glacier retreat, altered precipitation regimes, and rising temperatures are [...]
IBIS: A Community-Oriented Framework for Flood-Induced Bridge Vulnerability Assessment and Prioritization for Iowa
Published: 2025-12-27
Subjects: Environmental Engineering
Floods are among the most frequent and damaging natural hazards, posing serious risks to transportation infrastructure and public safety. Bridges, as essential links in road and rail networks, are especially vulnerable, and their closures can trigger widespread disruption, economic losses, and reduced access to vital services. Effective flood-risk mitigation and emergency response require systems [...]