Preprints
There are 6374 Preprints listed.
Comment on Rodríguez Collantes et al. A New Earth Crustal Velocity Field Estimation from ROA cGNSS Station Networks in the South of Spain and North Africa. Remote Sens. 2025, 17, 704
Published: 2026-01-03
Subjects: Earth Sciences, Geophysics and Seismology, Tectonics and Structure
In their recent study, Rodríguez Collantes et al. presented a new GNSS velocity field from the Royal Institute and Observatory of the Spanish Navy (ROA) network, deployed in southern Spain and northern Africa. However, their claims regarding the novelty of certain results and the precision of their findings compared to recent publications are questionable. I present previous studies not cited by [...]
The 1935 Guyana event and the 1908 Tunguska event
Published: 2026-01-03
Subjects: Education, Physical Sciences and Mathematics
This paper is a continuation of a series of works, devoted to various aspects of the 1908 Tunguska event. In 1935 a remarkable event took place in Guyana (at that time British Guiana). A meteor was seen and a large area of devastated forest was discovered. The main source for information on this event was an article published in an astronomical magazine in 1939. The 1939-article provided [...]
High-resolution seismic reservoir monitoring with multitask and transfer learning
Published: 2026-01-03
Subjects: Artificial Intelligence and Robotics, Computational Engineering, Geophysics and Seismology, Oil, Gas, and Energy, Sustainability
High-resolution real-time monitoring of reservoir changes is essential during CO2 injection or hydrocarbon production. Here, we leverage convolutional neural networks (CNNs) that employ multitask (MTL) and transfer (TL) learning to accurately predict relevant reservoir parameters from time-lapse seismic data. CNNs are initially trained to estimate the P-wave velocity from 2D multicomponent [...]
Reviewing chronostratigraphic uncertainty of the Ediacaran-Cambrian transition
Published: 2026-01-02
Subjects: Biogeochemistry, Earth Sciences, Geochemistry, Geology, Stratigraphy
The Ediacaran-Cambrian transition archives the widespread disappearance of ‘Ediacaran-type’ soft-bodied biota and the appearance of most modern animal body plans, including a major diversification of skeletal animals and styles of animal-substrate interaction. Despite over a century of study, our ability to confidently reconstruct the series of macroevolutionary events that inform origination and [...]
VRFIS: An Immersive Framework for Real-Time Flood Monitoring, Visualization, and Interactive Environmental Analysis
Published: 2026-01-01
Subjects: Environmental Engineering, Environmental Monitoring, Graphics and Human Computer Interfaces, Hydrology
The rapid evolution of Mixed Reality (MR) technologies, particularly Virtual Reality (VR), offers powerful new means of visualizing and interacting with geographic and environmental data. This paper presents Virtual Reality Flood Information System (VRFIS), an immersive information platform developed using Unreal Engine 5 and Google Photo Realistic 3D Tiles to enable real-time exploration of [...]
Women's subjective resilience to climate change in informal settlements: Learning from residents in Nairobi, Kenya
Published: 2026-01-01
Subjects: International and Area Studies
This study explores women's subjective resilience to climate change in informal settlements in Nairobi, Kenya, focusing on the lived experiences of women who face heightened vulnerability. Informal settlements, characterized by overcrowding, inadequate infrastructure, and insecure tenure, are disproportionately affected by extreme weather events such as flooding and heatwaves. While existing [...]
Assessing Climate-Driven Flood Risk with the Community Resilience and Adaptation Spatial Infrastructure Database (CRASID) in Urban and Rural Great Lakes Settings
Published: 2026-01-01
Subjects: Environmental Studies
Climate change is intensifying flooding in the Great Lakes watershed, threatening critical infrastructure and limiting access to emergency health services. Existing U.S. flood risk tools, such as FEMA’s Hazus and the National Risk Index, and newer models from the First Street Foundation, provide valuable coverage but often emphasize economic impacts while overlooking community-level [...]
Accessible Batch Catchment Delineation: A Semi-Automated Workflow for Non-Hydrologists
Published: 2025-12-31
Subjects: Life Sciences
Catchment delineation is a prerequisite for hydrological and water-quality analyses but remains a practical barrier for non-hydrologists, particularly when large numbers of sites must be processed. We present here a semi-automated, reproducible workflow for batch catchment delineation using openly available GIS tools. The workflow was developed during delineation of 2,870 monitoring sites [...]
Carbon stock recovery and greenhouse gas shifts following wetland restoration: a global meta-analysis
Published: 2025-12-31
Subjects: Life Sciences
Wetland restoration is widely promoted as a complementary nature-based climate solution, but its net carbon and GHG effects across wetland types and interventions remain poorly quantified at the global scale. We address this gap with a global meta-analysis spanning all major wetland types and restoration strategies. We conducted a global meta-analysis of 617 restored-altered pairs from 149 [...]
Extreme rainfall deficit in southern coastal Australia signals a return to drought, low dam levels and declining stream flows
Published: 2025-12-31
Subjects: Physical Sciences and Mathematics
Southern coastal Australia is situated between 30o and 38oS and is the longest east-west mid-latitude coastline (4,300km) in the Southern Hemisphere. It includes over 35% of Australia’s total population. Approximately 75% of this coastline, west of Melbourne, has a Mediterranean climate dominated by cold frontal systems that produce cool season (April to October) rainfall. Historically, this area [...]
Knowledge, Attitudes, and Practices of Fisherfolk in Ghana Toward Climate Change: A Cross-Sectional Study
Published: 2025-12-31
Subjects: Agriculture
Background Climate change poses serious risks to coastal livelihoods and marine ecosystems. Ghana’s artisanal fisheries sector is vital for food security and employment, yet fisherfolk’s climate adaptation awareness remains understudied. Methods A descriptive cross-sectional survey was conducted among 800 fisherfolk across three coastal regions. Structured questionnaires assessed knowledge, [...]
Marjal dels Moros: a model site for the structural, functional, and socioeconomic assessment of managed Mediterranean marshes
Published: 2025-12-30
Subjects: Life Sciences
Coastal wetlands deliver critical ecosystem services but remain highly degraded by anthropogenic and climatic pressures. This study presents an integrated structural, functional, and socio-economic assessment of Marjal dels Moros, a managed Mediterranean brackish marsh in eastern Spain, to evaluate restoration effectiveness and inform climate-based management. Six subsites representing [...]
Temperature effect on performance and methane emissions of highly controlled replicate septic tanks
Published: 2025-12-30
Subjects: Engineering
Septic tanks are widely used for decentralized wastewater treatment but remain poorly characterized with respect to greenhouse-gas emissions, particularly under variable temperature regimes. Understanding how temperature influences treatment performance and methane production is essential for improving both emission inventories and environmental sustainability through tailored mitigation [...]
Land subsidence in Jakarta in Three Dimensions (2014-2025) using InSAR-GNSS Datum Connection and the Strapdown Decomposition
Published: 2025-12-30
Subjects: Earth Sciences
Coastal megacities face compounding hazards from rising sea levels and land subsidence. Jakarta, one of the fastest-sinking megacities, already experiences recurrent flooding amplified by rapid land subsidence. Assessing and mitigating this hazard requires reliable estimates of three-dimensional ground motion over wide spatial and temporal scales in a well-defined geodetic reference frame and [...]
Hydrological and landscape controls on dissolved organic matter dynamics in European wetlands
Published: 2025-12-28
Subjects: Biogeochemistry, Climate, Earth Sciences, Fresh Water Studies
Dissolved organic matter (DOM) is a key component in aquatic ecosystems, representing the main source of energy for microbial metabolism and playing a crucial role in C sequestration and export. Its optical properties (absorption and fluorescence) provide integrated information on its quality (average molecular weight and aromaticity degree, main sources, presence of protein like and humic-like [...]