Preprints
There are 7306 Preprints listed.
Beyond the elite athlete: coupled climate-related health burdens in trail ultramarathon running
Published: 2026-07-22
Subjects: Biodiversity, Environmental Health and Protection, Environmental Public Health, Other Life Sciences
Climate change is simultaneously threatening the physical safety and psychological wellbeing of people who recreate outdoors, and degrading the ecological integrity of the natural environments in which they do so. Understanding who bears the greatest burden, which benefits are lost, and how adaptation strategies may shift rather than resolve risk is one of the defining challenges of planetary [...]
Rapid Fault Leakage Screening for CO₂ Storage Under Uncertainty: Application to a Faulted Miocene Aquifer in the Malay Basin
Published: 2026-07-22
Subjects: Earth Sciences, Geology, Other Engineering, Other Environmental Sciences, Transport Phenomena
Geological CO2 storage is critical for mitigating climate change, yet the risk of leakage along faults poses significant challenges. Faults function as structural traps or preferential CO2 migration pathways depending on their sealing capacity. This study applies a computationally efficient rapid fault leakage analysis tool that combines a vertically integrated reservoir model with an upscaled [...]
A Generalizable Lie Autoencoder for Emulating Barotropic Turbulence
Published: 2026-07-22
Subjects: Physical Sciences and Mathematics
Numerical ocean models rely on the discretization of primitive equations to simulate ocean dynamics, but their computational cost increases drastically with resolution. As an alternative, recent advances in neural networks (NN) have demonstrated promising applications in climate science, offering orders-of-magnitude faster simulations than traditional models through data-driven algorithms that [...]
A Late Miocene Reduction in the Spatial Breadth of Marine Tephra Occurrence: A Five-Basin Test of the Volcanic-Pulse Hypothesis
Published: 2026-07-22
Subjects: Earth Sciences, Geology, Physical Sciences and Mathematics, Stratigraphy, Volcanology
Episodic "pulses" of explosive volcanism have been widely invoked to explain climatic and biotic events across the Phanerozoic, but rarely tested against a high-resolution, multi-basin occurrence record. I tested for non-random temporal clustering of explosive volcanism using VOLCORE, a compilation of 34,696 visible tephra layers recovered by ocean drilling from across the world’s ocean basins. [...]
History-free spectral modelling of fractional seismic1 attenuation on fixed self-adjoint operators
Published: 2026-07-22
Subjects: Physical Sciences and Mathematics
Fractional wave models represent power-law attenuation and dispersion, but direct Caputo5 time stepping retains an increasingly long memory. We isolate the fixed-operator case in6 which a prescribed positive self-adjoint semidiscrete spatial operator is queried repeatedly at7 selected output times, receiver locations, or dense-basis source weights. Its fractional tem-8 poral evolution is [...]
Branch-resolved fixed-band near-constant-Q criteria for variable-order fractional seismic attenuation
Published: 2026-07-22
Subjects: Physical Sciences and Mathematics
We establish a closed-corridor near-constant-Q criterion for variable-order fractional wave operators. In one-dimensional graded media, and in a conditional multidimensional weak-attenuation corridor assuming a standard caustic-free real geometric-optics phase, the branch-normalized local quality factor satisfies \(Q(x,\omega)=Q_0(x)+R(x,\omega)\), [...]
Multi-scale constraints resolve the 2025 Kamchatka megathrust rupture in a 3D heterogeneous Earth
Published: 2026-07-22
Subjects: Earth Sciences
Great megathrust earthquakes produce deformation over a wide range of spatial scales, yet how near‑trench, near‑field, and far‑field static displacements collectively constrain the same rupture remains poorly understood. Here we analyze the 29 July 2025 Mw 8.8 Kamchatka earthquake using spatially multi-scale observations: tsunami-derived initial uplift models for near-trench offshore deformation, [...]
Multiscale land-atmospheric feedbacks intensify hot droughts over global river-basins
Published: 2026-07-22
Subjects: Engineering, Physical Sciences and Mathematics
When drought and heatwave coincide as hot drought, its impacts exceed the sum of individual hazards. The understanding that hot drought intensifies through soil drying is incomplete. We instead find amplification and suppression of hot droughts over both dry and wet soils, with wet (dry) soil-associated amplification (suppression) being the secondary pathway. Moreover, soil-moisture control on [...]
Local thermal externalities of hyperscale datacenters: causal satellite evidence and implied cooling costs
Published: 2026-07-22
Subjects: Life Sciences, Physical Sciences and Mathematics, Social and Behavioral Sciences
Hyperscale datacenter construction converts agricultural or greenfield land into continuous heat rejection campuses, yet no causal estimate of the resulting local thermal effect exists. This paper applies a Callaway and Sant'Anna (2021) staggered difference-in-differences estimator to spatially differenced Landsat satellite thermal imagery across 59 datacenter sites in the United States, with [...]
An assessment of surface versus underground vault installations of broadband seismometers in the hard-rock terrain of the Deccan Volcanic Province, India
Published: 2026-07-21
Subjects: Physical Sciences and Mathematics
Surface or ground-level installations of broadband seismic stations are routinely used in temporary seismic networks deployed in the Deccan Volcanic Province (DVP) of peninsular India. In this study, we assess the feasibility and utility of a shallow vault installation in this region, by installing a broadband station in an urban environment, with the sensor placed $\sim 1$ m below ground level. [...]
Soil acidity governs cropland phosphorus availability under future climate
Published: 2026-07-21
Subjects: Agriculture, Biogeochemistry, Soil Science
Understanding the response of agricultural phosphorus (P) cycling to climate change is fundamental for ensuring global food security and protecting planetary boundaries1–2. Recently, Wang et al.3 reported a drastic reduction in soil P bioavailability (32–34%) under long-term elevated carbon dioxide (eCO2) and warming in rice paddies, attributing it to enhanced geochemical sequestration via [...]
Assessing Predictive Accuracy of Tornado Resilience Models Through Post-event Reconnaissance Data Analysis
Published: 2026-07-21
Subjects: Civil and Environmental Engineering, Civil Engineering, Engineering
Community resilience assessment under a given hazard scenario is commonly performed by representing the building inventory through archetypes and assigning fragility functions for multiple limit states to each archetype. However, because these archetypes and fragility functions may be developed from design provisions, mechanics-based analyses, expert judgment, or historical event data, their [...]
The Tarim Mega Impact Event: A Permian (~290 Ma) Mega-Impact Triggering Global Magmatism, the Artinskian Warming Event, and the Central Asian Arc-LIP Belt
Published: 2026-07-20
Subjects: Geochemistry, Geographic Information Sciences, Geomorphology, Geophysics and Seismology, Sedimentology, Stratigraphy, Tectonics and Structure, Volcanology
We propose that an oblique mega-impact by a ferronickel asteroid (~180×100×90 km, 22 km/s, incidence angle 24°) that occurred at ~290 Ma in the present-day Tarim Basin can, through the "thin-target penetration" mechanism, attempt to unify within a single physical framework: (1) the Tarim Large Igneous Province (TLIP) flood basalts; (2) the Pamir–Iran–Turkey arcuate mafic–ultramafic magmatic belt; [...]
Thermal Dynamics of Peri-Urban Landscapes: A Paired Spatial Analysis of Brick Kilns and Bare Soil in León, Guanajuato
Published: 2026-07-19
Subjects: Environmental Monitoring, Environmental Sciences
Urban expansion and industrial activities in peri-urban environments modify land cover and influence surface thermal patterns. This study examines the thermal behavior of artisanal brick kilns in León, Guanajuato, Mexico, using a paired spatial approach designed to distinguish the contribution of kiln activity from that of the surrounding landscape. Landsat 8 Collection 2 Level-2 imagery acquired [...]
Azimuthal Anisotropy and Lateral Velocity Gradient Beneath Australia From Teleseismic P-wave Polarization Anomalies
Published: 2026-07-18
Subjects: Geophysics and Seismology
Teleseismic P-wave polarization anomalies provide useful constraints on lateral heterogeneity and anisotropic structure beneath seismic stations, but their application to continental-scale structures has remained limited. Here, we analyze long-period teleseismic P-wave polarization anomalies recorded at permanent and temporary seismic stations across Australia. We apply a harmonic analysis to the [...]