Preprints
There are 7999 Preprints listed.
Forty+ Years of Post-Earthquake Reconnaissance: Methodological Evolution Across Three Phases of EEFIT Activity
Published: 2026-05-12
Subjects: Engineering, Social and Behavioral Sciences
Over four decades, the Earthquake Engineering Field Investigation Team (EEFIT) has undertaken around 50 missions in around 35 countries, evolving from a structural-engineering field programme into a hybrid platform integrating fieldwork, remote sensing, community-based data collection, and longitudinal return studies. Founded in 1982 as a joint venture between UK academic institutions and the [...]
Spatial Assessment of Soil Erosion Risk Using RUSLE and GIS in Upland Agricultural Barangays of Candelaria, Quezon, Philippines
Published: 2026-04-25
Subjects: Physical Sciences and Mathematics
This study integrated Geographic Information System (GIS) and the Revised Universal Soil Loss Equation (RUSLE) model, A= R • K • LS • C • P, to assess soil loss and propose soil conservation strategies in Candelaria, Quezon, Philippines, addressing increasing erosion evidenced by collapsing hillsides, sedimentation, and soil displacement from construction. The RUSLE model, with adjustments in the [...]
First Characterisation of P-band Scattering Mechanisms from Orbit in Lower Shire Valley, southern Malawi, using ESA Biomass Imagery
Published: 2026-04-06
Subjects: Earth Sciences, Terrestrial and Aquatic Ecology
The European Space Agency (ESA) Biomass mission provides the first spaceborne fully polarimetric P-band synthetic aperture radar (SAR) observations in orbit. Here, we report the first characterisation of P-band scattering mechanisms over the Lower Shire Valley (LSV) floodplain, southern Malawi. A single quad-polarimetric acquisition, collected at the onset of the rainy season in November 2025, [...]
Lowering barriers to probing high-frequency variations in river chemistry through a frugal machine learning-based framework
Published: 2026-04-10
Subjects: Biogeochemistry, Environmental Monitoring, Hydrology, Water Resource Management
High-frequency river chemistry monitoring is crucial for capturing transient hydro-geochemical variations and ensuring water security, yet its implementation is limited by logistical and budgetary constraints. Here we present a machine learning-based framework that integrates continuous, low-cost physico-chemical proxies with sparse ‘anchoring’ solute measurements to reconstruct hourly-scale [...]
Species specific mangrove habitat suitability and scenario dependent blue carbon modeling under uncertainty in Soc Trang Province, Vietnam
Published: 2026-04-25
Subjects: Engineering, Life Sciences
This study develops an integrated framework for species specific mangrove habitat suitability and scenario dependent blue carbon planning in Soc Trang Province, Vietnam. The spatial model translates ecological zonation evidence for 11 mangrove taxa into local rules based on coastal distance and elevation, then tests those rules across 19 spatial scenarios. The carbon model carries the resulting [...]
Agentic Modelling Pipeline: Reproducible Rapid Stormwater Modelling Management System with OpenClaw
Published: 2026-03-17
Subjects: Civil and Environmental Engineering, Civil Engineering, Computational Engineering, Engineering, Environmental Engineering, Hydraulic Engineering
Configuring urban hydrological models, such as SWMM, for operational or real-time modelling remains onerous for many models. We propose an Agentic SWMM workflow, which embeds ‘Skills’ and model context protocols to automate model configuration, execution, and extract and plot quantities of interest. To ensure that the entire Agentic SWMM workflow is auditable and reproducible, each run will [...]
Uniform automated analysis of Sdiff splitting due to lowermost mantle anisotropy: Caveats and curated global dataset
Published: 2026-06-25
Subjects: Physical Sciences and Mathematics
Seismic anisotropy, the dependence of seismic wave speeds on the direction of propagation and/or polarization, places crucial constraints on deformation and convective flow in the lowermost mantle (the D″ layer). Shear waves that diffract along the core-mantle boundary (CMB) are ideally suited for probing this region due to their long horizontal ray paths in the lowermost mantle. However, the [...]
Climate Risk Intelligence Index (CRII): An AI-Augmented Satellite-Based Climate Vulnerability Assessment Framework for India
Published: 2026-10-30
Subjects: Earth Sciences, Environmental Indicators and Impact Assessment, Environmental Monitoring
Climate change has emerged as a major global challenge affecting environmental sustainability, hydrological stability, urban resilience, and ecosystem health. Conventional climate vulnerability assessment systems primarily rely on static rule-based frameworks and isolated environmental indicators, limiting contextual interpretability and adaptive reasoning across geographically diverse regions. [...]
The distribution of Earth’s wind-blown sand dunes
Published: 2026-03-05
Subjects: Climate, Geology, Geomorphology
Sand dunes develop when there is a source of sediment and wind capable of saltating that sediment. Dune morphology and occurrence can then be used to infer the distribution of sediment sources and climate conditions during their formation. This is particularly useful for inference of past climate from relict dunes or the sedimentary record, and for climate conditions where direct observation is [...]
How does green innovation support carbon neutrality? A global bibliometric analysis of research trends and thematic evolution
Published: 2026-04-11
Subjects: Library and Information Science
Global attention is shifting to climate change, with carbon neutrality acting as a global development strategy since the Paris Agreement to emphasize the strict control and mitigation of emissions. This phenomenon allows the international community to explore carbon neutrality from different disciplines. The unavailability of a cross-database bibliometric perspective on carbon neutrality since [...]
Awareness and Action: An Exploration Between Public Perception and Space Industry Priorities Regarding Sustainability
Published: 2026-05-30
Subjects: Environmental Sciences, Environmental Studies, Natural Resources and Conservation, Natural Resources Management and Policy, Nature and Society Relations, Sustainability
As issues regarding sustainability continue to grow more urgent and prevalent to everyday life, it is important to recognize whether society fully understands what is occurring. The low earth orbit is at threat of overcongestion, and the environment is experiencing higher rates of pollution due to rocket launches, calling for the need for the government and public to engage in this issue. [...]
Effects of loading schemes in volumetric simulations of sequences of earthquakes and aseismic slip (SEAS) in subduction zones
Published: 2026-06-09
Subjects: Earth Sciences, Geophysics and Seismology, Tectonics and Structure
State-of-the-art simulations of sequences of earthquakes and aseismic slip (SEAS) require realistic loading conditions and physics-based constitutive laws to produce the full spectrum of fault slip. Previous studies have shown that loading schemes may affect long-term system behavior, including earthquake recurrence intervals. However, the effects of loading schemes on rupture characteristics and [...]
Spatiotemporal evolution of temperature extremes across India’s agro-climatic zones (1951–2025)
Published: 2026-04-11
Subjects: Atmospheric Sciences, Climate, Meteorology, Oceanography
Long-term changes in temperature extremes are a robust signature of anthropogenic climate change, yet their spatial structure across India’s agro-climatic zones (ACZs) remains insufficiently resolved at policy scales. Here, we quantify changes in temperature extremes across 14 mainland ACZs during 1951–2025 using the India Meteorological Department 1°×1° gridded daily dataset. We compute 22 [...]
A mid‐Proterozoic coupled Sr and Li isotope excursion and its potential connection to enhanced weathering and ocean oxygenation at 1.57 Ga
Published: 2025-08-12
Subjects: Physical Sciences and Mathematics
Chemical weathering is a critical Earth system process that regulates climate, ocean chemistry and the long-term carbon cycle. However, the intensity and variability of chemical weathering remain insufficiently constrained for the mid-Proterozoic (~1.8‒0.8 Ga), greatly limiting our understanding of the environmental context to early eukaryotic evolution. Here, we report the first coupled positive [...]
Subduction-driven mantle flow beneath and around the Philippine Sea Plate from seismic anisotropy
Published: 2025-12-08
Subjects: Physical Sciences and Mathematics
Shear-wave splitting illuminates mantle flow and subduction zone dynamics but is typically inferred near stations or earthquakes, limiting studies in sparsely instrumented regions away from earthquakes. Where stations or earthquakes are present, fast splitting directions are often parallel to the nearest trench, which has yet to be fully understood and reconciled with geodynamic flow predictions. [...]