Preprints
Filtering by Subject: Other Earth Sciences
Trapped Lee-Wave Resonance Determines Antarctic Megadune Wavelength
Published: 2026-05-23
Subjects: Applied Statistics, Categorical Data Analysis, Design of Experiments and Sample Surveys, Earth Sciences, Fluid Dynamics, Geology, Geomorphology, Geophysics and Seismology, Glaciology, Mineral Physics, Other Earth Sciences, Paleontology, Physics, Planetary Geology, Planetary Geomorphology, Planetary Geophysics and Seismology, Planetary Glaciology, Planetary Hydrology, Planetary Mineral Physics, Planetary Sciences, Planetary Sedimentology, Sedimentology, Statistical Methodology, Statistical Models, Statistics and Probability, Stratigraphy
Snow megadunes cover 5×105 km2 of the East Antarctic plateau, biasing surface mass balance estimates and overprinting ice-core signals—yet their 2–5 km wavelength has lacked a quantitative selection mechanism for two decades. We first falsify the standard formula λ∗ = 2πU0/N through a calibration-free spatial test: eight REMA 2 m tiles across two independent locations at 81.5–82.0°S show no [...]
Geodynamic Model Description for Ptolemy’s Germania Magna
Published: 2026-05-13
Subjects: Analysis, Astrophysics and Astronomy, Dynamical Systems, Dynamic Systems, Earth Sciences, Geology, Geomorphology, Geophysics and Seismology, Mathematics, Other Applied Mathematics, Other Astrophysics and Astronomy, Other Earth Sciences, Other Planetary Sciences, Planetary Geology, Planetary Geophysics and Seismology, Statistical Models, Statistics and Probability, Stratigraphy, Tectonics and Structure, The Sun and the Solar System, Volcanology
This model proposes that the well-documented geodynamic and climatic disruption of the 6th century AD involved a reactivation of the ancient Caledonian Deformation Front (CDF) and the Trans-European Suture Zone (TESZ), most likely triggered by cosmic events in the form of impacts or airbursts. Large-scale inversion tectonics, driven by Alpine compressive forces, are argued to have caused [...]
TUD-L3-EWH_UNC-GRACE: A Global Level‑3 GRACE(-FO) EWH Uncertainty Product
Published: 2026-05-08
Subjects: Earth Sciences, Glaciology, Hydrology, Other Earth Sciences
We present TUD-L3-EWH\_UNC-GRACE, a globally gridded Level-3 GRACE(-FO) equivalent water height (EWH) data product providing an extensive characterisation of uncertainty for direct use in Earth system research. Unlike conventional approaches that either require propagation of full normal matrices or rely on empirical assumptions regarding temporal and spatial correlations, the dataset combines [...]
The Role of Humidity in Past and Future Fire Weather Trends in the Contiguous United States
Published: 2026-05-06
Subjects: Other Earth Sciences, Risk Analysis
There has been evidence of increasing fire activity in the United States since approximately the 1980s, now estimated to cause tens to hundreds of billions of dollars of damage per year. Weather is one of the key drivers of fire activity, with hot, dry, and windy weather commonly associated with high-risk conditions. We are still, however, developing an understanding of how these weather [...]
Airborne imaging spectrometer measurements of methane releases under turbulent conditions
Published: 2026-04-24
Subjects: Earth Sciences, Environmental Sciences, Other Earth Sciences, Physical Sciences and Mathematics, Physics
Methane plume detection and quantification from airborne and spaceborne platforms offers a promising approach for monitoring localized greenhouse gas emissions. Its performance must be demonstrated under realistic but controlled conditions. An airborne demonstrator of a compact shortwave infrared imaging spectrometer developed for the AIRMO Earth observation mission was therefore evaluated during [...]
Reconstructing Land Surface Temperature for Cloud-Covered Regions: A Review of Methods
Published: 2026-04-16
Subjects: Climate, Other Earth Sciences
Understanding surface thermal conditions is essential for studying ecosystem responses, hydrological processes, and climate-driven environmental change. Land Surface Temperature (LST) is a key parameter for studying a wide range of environmental and climatic processes. Although remote sensing technologies enable the acquisition of LST data on a global scale, satellite observations are frequently [...]
Agent-based Modelling of Microbialite Formation through Sedimentation and Precipitation Dynamics
Published: 2026-04-13
Subjects: Biogeochemistry, Earth Sciences, Geochemistry, Other Earth Sciences, Paleobiology, Paleontology, Physical Sciences and Mathematics, Sedimentology, Stratigraphy
Fossil microbialites resulting from the interplay of sedimentation and microbially induced precipitation are among the oldest evidence of life on Earth and help geobiologists interpret many sedimentary environments. However, the factors governing their internal structure and external morphology are still poorly understood. Additionally, abiotic processes can mimic the morphology of some [...]
Stress testing insurance market stability under climate risk
Published: 2026-04-02
Subjects: Environmental Engineering, Other Earth Sciences, Other Environmental Sciences, Risk Analysis
Climate change, urban development, and evolving insurance markets threaten the stability of disaster-risk financing. Homeowners insurance is embedded in a layered network of reinsurers, capital markets, and public backstops that absorb losses and can be overwhelmed by extreme events. We develop a probabilistic risk-propagation model linking physics-based simulations of tropical cyclone wind and [...]
Platinum-Group Element systematics in the North Atlantic Igneous Province: new insights from Northern Irish and Irish magmatism
Published: 2026-04-01
Subjects: Geochemistry, Geology, Other Earth Sciences, Volcanology
The North Atlantic Igneous Province (NAIP) is one of the most prospective regions for Ni-Cu-Platinum-Group Element (PGE) mineralisation in Europe, and recent studies have discovered elevated PGE concentrations within its early lavas and minor intrusions comprising the British and Irish Palaeogene Igneous Province (BIPIP). This study presents an extended digital map of the regional mafic dyke [...]
InSARLite: An Open-Source GUI for Streamlined InSAR Time Series Processing
Published: 2026-03-26
Subjects: Graphics and Human Computer Interfaces, Other Earth Sciences, Programming Languages and Compilers
Interferometric Synthetic Aperture Radar (InSAR) is a powerful technique for measuring surface deformation at high spatial resolution over large areas. Despite its demonstrated value across geohazards and Earth-surface processes, broader adoption is often limited by the complexity of end-to-end processing workflows and the technical overhead required to execute them. To reduce this barrier, we [...]
Bridging Natural Language and Desktop GIS Automation with LLM-Powered GIS Plugins
Published: 2026-03-09
Subjects: Other Earth Sciences, Software Engineering
Geographic Information Systems (GIS) are indispensable for spatial analysis and remote sensing, but still, scripting interfaces that enable automation (ArcPy, PyQGIS, and SNAP GPT) impose a steep technical barrier on domain scientists who are not software developers. We present GIS~Chat, an open-source suite of three plugins that embed a Large Language Model (LLM) chat panel directly inside [...]
Assessing the medium-term risk to reef damage and rubble generation for the Great Barrier Reef
Published: 2026-03-06
Subjects: Atmospheric Sciences, Environmental Monitoring, Life Sciences, Marine Biology, Natural Resources and Conservation, Oceanography, Other Earth Sciences, Physical Sciences and Mathematics
Coral reef systems live in multi-hazard environments and are exposed to a wide range of disturbance events that operate at different spatial and temporal scales. We identify seven drivers derived from hazards that have and can result in reef damage in the Great Barrier Reef (GBR): waves, winds, bottom current velocity, coral bleaching, crown-of-thorns seastar outbreaks, ship groundings, and [...]
vathra.xyz — Crowdsourced Monitoring of Greece's Geodetic Heritage: Architecture, Empirical Results, and Legal Framework
Published: 2026-03-04
Subjects: Earth Sciences, Engineering, Other Earth Sciences, Other Physical Sciences and Mathematics
Greece's national trigonometric network comprises 25,258 geodetic survey points established by the Hellenic Military Geographical Service (HMGS/GYS). This paper presents vathra.xyz, an open-source web platform for crowdsourced condition monitoring of these points using Volunteered Geographic Information (VGI) methods. We describe the system architecture (React, PostGIS, Leaflet, browser-based AR [...]
Biotite/melt trace-element, lithium, and F-OH partitioning in silicate magmas
Published: 2026-02-17
Subjects: Earth Sciences, Geochemistry, Inorganic Chemistry, Materials Chemistry, Other Earth Sciences
Biotite is a key hydrous silicate mineral in evolved magmatic systems, but its control on the behaviour of minor- and trace-elements, in particular Li, Nb, F and the REE is not well understood. Here, we quantify that control in sodic (per)alkaline H2O-saturated magmas with variable F-content through crystallisation experiments at 650–800◦C and 200 MPa total pressure, at log f O2 ≈ FMQ +1. [...]
Compositional Reservoir Simulation Sensitivity Studies: Grid, Permeability, and Well Configuration Analysis Using OPM Flow
Published: 2026-02-15
Subjects: Earth Sciences, Geology, Other Earth Sciences, Petroleum Engineering
This technical report presents a comprehensive parametric sensitivity analysis of compositional reservoir simulation using the open-source OPM Flow simulator, extending previous gas injection feasibility studies (Padder, 2026) through three systematic investigations: (1) grid refinement analysis comparing coarse (7×7×3, 147 cells) and refined (14×14×6, 1,176 cells) spatial discretization under [...]