Preprints
There are 6976 Preprints listed.
wave-attenuation-1d: An idealized one-dimensional framework for wave attenuation through coastal vegetation using Numba-accelerated shallow water equations
Published: 2025-08-07
Subjects: Applied Mechanics, Environmental Engineering, Fluid Dynamics, Numerical Analysis and Computation, Oceanography
Coastal vegetation provides crucial wave attenuation for shoreline protection, yet existing models are either computationally prohibitive or lack transparency for educational purposes. This study presents wave-attenuation-1d, an open-source Python package implementing linearized shallow water equations with vegetation-induced drag to simulate wave propagation through coastal vegetation. The [...]
Modeling Fluid Dynamics in Porous Media: A Pore-Scale Flow Analysis
Published: 2025-06-01
Subjects: Engineering
This study investigates single-phase fluid flow in porous media using advanced numerical methods, with a focus on pore-scale dynamics, to address the limitations of traditional models, such as Darcy's law. The research utilizes the Creeping Flow interface and the Brinkman equation to analyze velocity and pressure distributions in heterogeneous porous media. Qualitative results indicate the [...]
Vegetation Dynamics and Their Contribution to the Little Ice Age
Published: 2025-06-02
Subjects: Physical Sciences and Mathematics
Causes of the Little Ice Age (LIA) have remained a subject of intensive research due to its significance. The causes of the LIA have been largely speculative; however, recent studies suggest that plant and vegetation growth may provide a plausible explanation. The LIA period coincided with an ecological encounter, as humans from the Old and New Worlds exchanged goods and diseases. A significant [...]
Drivers of changes in shoreline position of two small reef islands in the West Philippine Sea
Published: 2025-04-15
Subjects: Earth Sciences
This study examines the variations in the shoreline position of two atoll reef islands in the West Philippine Sea, Pag-asa Island, and Lawak Island, and identifies the influence of potential drivers of erosion. Data from field observations, beach profiling, and Google Earth Pro satellite images from 2004 to 2022 are used to identify shoreline movement for each island. Shoreline change is [...]
Improving magmatic CO2 reconstruction using X-ray Computed Tomography to accurately quantify melt inclusion volumes and geometries
Published: 2025-06-04
Subjects: Earth Sciences, Geochemistry, Physical Sciences and Mathematics, Volcanology
Melt inclusions provide valuable insights into magmatic systems, allowing the study of otherwise inaccessible melts. Trapped volatile contents, commonly in the form of bubbles within melt inclusions, allow direct sampling and study of magmatic volatiles that are otherwise lost due to saturation and degassing. Quantifying magmatic volatiles such as CO2 is a complex process requiring multiple [...]
Moist Convection and Radiative Cooling: Dynamical Response and Scaling
Published: 2025-06-02
Subjects: Atmospheric Sciences
Moist convection is a fundamental process occurring in the Earth's atmosphere. It plays a central role in the weather and climate of the tropics where, to first order, the heating of the atmosphere by convection is in balance with the cooling of the atmosphere by the emission of radiation to outer space. In this study, we use a Cloud Resolving Model in Radiative-Convective Equilibrium with an [...]
From geochemical to biogeochemical cycles: an organizational view of how (and why) life shaped its conditions of existence
Published: 2026-04-09
Subjects: Biochemistry, Biophysics, and Structural Biology, Biodiversity, Biogeochemistry, Earth Sciences, Life Sciences
Since the seminal work of Maturana and Varela, the Organizational Approach (OA) has defended an organism-centered view of life. This paper argues that the OA must be extended to include the historical, ecological and geochemical processes that sustain biological systems across scales. We develop a multiscale account of closure of constraints (CoC) in which localized closures can emerge and [...]
Separate sectoral decarbonization policies accelerate climate action but could jeopardize key sustainability targets
Published: 2025-06-15
Subjects: Engineering
The Paris Agreement grants countries flexibility in designing their pathways to net-zero emissions, yet most have focused on economy-wide, cost-effective approaches without clearly defining the role of sectoral emission reductions and/or carbon dioxide removal (CDR). These blanket strategies prioritize low-cost sectors, leaving significant residual emissions and relying on uncertain, largely [...]
Supershear source model of the 2025 M7.8 Myanmar earthquake and paleoseismology of the Sagaing Fault: regions of significant overlap with past earthquakes
Published: 2025-06-06
Subjects: Earth Sciences, Physical Sciences and Mathematics
The 2025 Mw 7.8 earthquake on the central Sagaing Fault is one of the most destructive seismic events in Myanmar's recorded history, producing near-fault shaking exceeding Modified Mercalli Intensity X and impacting tens of millions of people across Southeast Asia. We present a detailed kinematic rupture model of the event based on joint inversion of regional strong motion waveforms and [...]
Mapping Rock Density in Ireland via Image-Based Geological Classification and Geodetic Modeling
Published: 2025-06-04
Subjects: Engineering
This study presents a comprehensive geospatial and geophysical workflow designed to develop a detailed rock density model for Ireland. The methodology integrates image-based classification of geological maps, specifically from the Geological Survey of Ireland (GSI), with precise geodetic computations. We detail the procedures for classifying rock types based on RGB values, assigning accurate [...]
Spatiotemporal dynamics of floodplain patterns during the last 400 years south of Leipzig - A regional scale analysis
Published: 2025-06-06
Subjects: Earth Sciences, Geographic Information Sciences, Geography, Geomorphology, Other Earth Sciences, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Social and Behavioral Sciences
The Elster-Pleiße floodplain south of Leipzig has undergone significant hydromorphological changes over the past centuries, influenced by both natural processes and anthropogenic interventions. This study employs high-resolution LiDAR-based fluvial-geomorphological mapping (1x1 m resolution) and old maps analyses to reconstruct past river dynamics and identify shifts in channel morphology. [...]
Comparative Economic and Environmental Analysis of Open Field (Rainfed and Irrigated) and Environmental Agriculture (Screenhouse) Leafy and Pulpy Vegetables Production Systems in North West Nigeria.
Published: 2025-06-07
Subjects: Agriculture
Screenhouse farming demonstrates remarkable water-use efficiency, requiring only 7.00 liters per kg for cabbage, 3.58 liters/kg for lettuce, and 2.38 liters/kg for spinach, a significant contrast to rainfed cabbage at 10,625 liters/kg and rainfed pumpkin at 17,628 liters/kg. This means screenhouse farming uses just 0.066% of the water consumed by rainfed cabbage and 0.014% of the water used by [...]
Enhancing Local Inclusion in Climate Transparency and Promoting Accessible Energy for Vulnerable Households in Burkina Faso
Published: 2025-06-07
Subjects: Outdoor Education
Burkina Faso is actively working to establish a climate transparency framework, as required by the United Nations Framework Convention on Climate Change (UNFCCC). This involves developing mechanisms for reporting on mitigation, adaptation, and support received. The Ministry of Environment, through the Permanent Secretariat of the National Council for Sustainable Development (SP-CNDD), is the lead [...]
Topological and Information-Theoretic Analysis of Climate-Driven Indonesian Throughflow Dynamics
Published: 2025-06-29
Subjects: Applied Mathematics, Climate, Non-linear Dynamics, Oceanography
The Indonesian Throughflow (ITF) represents the sole tropical pathway connecting Pacific and Indian Oceans, yet quantitative understanding of climate mode influences on its variability remains incomplete. We applied information-theoretic and topological frameworks to analyze 34 years (1984-2017) of observational ITF transport data alongside ENSO and IOD indices. Bootstrap analysis revealed [...]
Ensemble methods for landslide susceptibility mapping: A review of machine learning and hybrid approaches
Published: 2025-06-07
Subjects: Engineering
Abstract: The assessment of landslide susceptibility holds significant importance in disaster risk reduction. This study comprehensively examines the current research on landslide susceptibility from two aspects: the steps involved in landslide susceptibility assessment and modeling methods. Initially, we retrieved pertinent research articles, published between 2014 and 2023, and focused on [...]