Preprints
There are 6976 Preprints listed.
A 3-D Hybrid SEM-FK Method for Teleseismic Wave Simulation in Coupled Elastic-Acoustic Media
Published: 2026-02-14
Subjects: Geophysics and Seismology, Physical Sciences and Mathematics
We present a three-dimensional hybrid numerical scheme developed for modeling teleseismic plane-wave propagation through coupled acoustic–elastic media. This approach integrates the 3-D spectral-element method (SEM) with a matrix-based frequency–wavenumber (FK) method, enabling the rigorous treatment of complex bathymetry and precise elastic–acoustic coupling within layered media. To facilitate [...]
Time-dependent forecast of large earthquakes from physics-informed probabilistic approach
Published: 2026-03-07
Subjects: Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics
The elastic energy that fuels large earthquakes accumulates heterogeneously along faults, resulting in complex earthquake occurrence patterns. Although earthquake cycle simulations help capture such complexity in seismic hazard models, their high computational cost prevents widespread use and uncertainty quantification. Here, we propose a physics-based probabilistic method to forecast the timing [...]
Fault migration and basin evolution during complex rifting: examples from the western North Gulf of Evia, Greece
Published: 2025-12-24
Subjects: Stratigraphy, Tectonics and Structure
Understanding dynamic processes of faulting and basin evolution across timescales in complex rift settings remains a key challenge in active continental tectonics. This is in part due to a limited number of young rift systems with well constrained, high-resolution age models derived from subsurface datasets. We aim to address this challenge and advance our understanding of time-dependent [...]
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. [...]
Along-strike coupling heterogeneity in Cascadia’s slow-slip zone constrained by GNSS and reduced-order rate-and-state friction modeling
Published: 2026-03-07
Subjects: Earth Sciences, Geophysics and Seismology
Slow slip events (SSEs) in the Cascadia subduction zone exhibit along-strike segmentation, where the central segment has longer recurrence intervals but smaller moments. We quantify the controls on this variability by combining geodetic inter-SSE coupling inversion with Bayesian inference of a quasi-dynamic rate-and-state friction SSE-cycle model accelerated by reduced-order modeling. We find [...]
Author citation metrics in paleontology: the h-index and the c-score
Published: 2025-10-07
Subjects: Paleontology
The “Stanford ranking” (SR) of standardized citation indicators calculates an individual scientist’s composite c-score, addressing limitations of the h-index. Updated annually, the SR lists the top 100,000 scientists and the top 2% in each specialty. This study examines all (500) palaeontologists included in the SR (SR-palaeontologists), comparing their h-index, c-score and related productivity [...]
High-resolution Digital Terrain Model and Land-surface Parameters of São Sebastião and Ilhabela, southeastern Brazil
Published: 2025-08-21
Subjects: Environmental Monitoring, Geology, Geomorphology, Nature and Society Relations, Physical and Environmental Geography, Remote Sensing
Effective disaster risk management and detailed environmental studies in landslide-prone regions require high-resolution and accurate Digital Terrain Models (DTMs). This work describes the development of a 2m-resolution lidar-based DTM and an extensive set of land-surface parameters (LSPs) for the municipalities of São Sebastião and Ilhabela, southeastern Brazil. The dataset was generated from [...]
Beyond national averages: a multi-method assessment of sub-national environmental sustainability and inequality in India
Published: 2026-04-17
Subjects: Life Sciences, Physical Sciences and Mathematics
India’s rapid economic growth regularly jeopardizes its environmental foundation, although important sub-national differences were typically hidden by national-level evaluations. For all 37 Indian states and union territories (UTs), this study creates the Composite index of Environmental Sustainability (CoES), a comprehensive multi-dimensional framework that integrates 36 indicators across 4 [...]
Spatial-Temporal Assessment of Natural Disaster Losses Using Comb- ined AHP-Entropy Weight Method: A Case Study of Jiangxi Province
Published: 2026-03-29
Subjects: Risk Analysis
The Disaster Situation Index (DSI) serves as a crucial method for natural disaster loss assessment. However, the weight determination in existing assessment practices is characterized by strong subjectivity and methodological singularity, while the classification of DSI also suffers from artificial subjective arbitrariness. To resolve these two issues, this study proposes a hybrid approach [...]
Bridging ERA5 Reanalysis Data and Regulatory Air Dispersion Modelling: A Transparent Workflow Implemented through the WindRose Toolkit
Published: 2026-03-07
Subjects: Computer Sciences, Earth Sciences, Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Regulatory atmospheric dispersion models such as AERMOD and CALPUFF are widely adopted for Environmental Impact Assessments involving atmospheric emissions. Despite their scientific maturity and regulatory acceptance, the practical application of these modelling systems outside the North American context is often constrained by the limited availability of suitable meteorological datasets. In many [...]
Effect of chemical disequilibrium during metal-silicate partitioning on the thermal state of the early core
Published: 2025-11-05
Subjects: Earth Sciences, Geochemistry, Geophysics and Seismology, Planetary Geology, Planetary Geophysics and Seismology
In this study, we improved a previously published numerical model linking the core composition to the core temperature during accretion by introducing the possibility of chemical disequilibrium during the segregation of the core in the magma ocean phase. Our study shows that at least 60% of the accreting metal needs to be equilibrated in order to obtain a chemically coherent Earth, thus favoring [...]
How well do global ocean approaches constrain local pCO2?
Published: 2026-03-22
Subjects: Oceanography and Atmospheric Sciences and Meteorology
The ocean absorbs 29% of humanity’s annual anthropogenic carbon dioxide (CO2) emissions, and the future of climate change is strongly dependent on how this sink evolves. Marine Carbon Dioxide Removal (mCDR) approaches to enhance this sink are actively being developed. In the interest of understanding how well state-of-the-art global products and models can help to distinguish mCDR signals from [...]
A preliminary seismic catalog for the Mozambique Channel
Published: 2026-02-12
Subjects: Geophysics and Seismology, Tectonics and Structure
The Mozambique Channel is a 1,600-km long, 950 – 1,000-km wide deep-water arm of southwestern Indian Ocean, located between Mozambique and Madagascar Island. The channel hosts the offshore continuation of the East African Rift System, an active divergent plate boundary that has propagated from the African continent, across Mesozoic continental rifted margins, into Mesozoic oceanic lithosphere. [...]
Storm life cycle modulates extreme hydroclimate impact risk: a Great Lakes Region case study
Published: 2026-04-18
Subjects: Atmospheric Sciences, Fresh Water Studies, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Extratropical cyclones (ETCs) drive hydroclimate variability in the Great Lakes, yet their impacts vary widely between events. Here, we classify ETCs into two storm types using an unsupervised clustering approach based on storm properties and evolution. The resulting classes differ systematically in life cycle stage at Great Lakes entry. Using bootstrap-estimated risk ratios and risk differences, [...]
Shifting the Paradigm: Redefining the Chronostratigraphy of the Triassic Rewan Group, Bowen Basin, Australia
Published: 2026-02-12
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics, Tectonics and Structure
The Triassic continental Rewan Group in the northern Bowen Basin, Queensland, Australia, consisting of the Sagittarius Sandstone and the Arcadia Formation, preserves a key record of terrestrial environments and faunas that have been assumed to document recovery following the end‑Permian mass extinction (EPME). The Rewan Group accumulated in a retroarc foreland basin during the Hunter–Bowen [...]