Preprints
There are 5796 Preprints listed.
Impact of oxygen release from bentonite on microbial activity, mineralogy, and steel corrosion
Published: 2025-07-19
Subjects: Civil Engineering, Environmental Engineering, Environmental Microbiology and Microbial Ecology Life Sciences, Geochemistry
Deep geological repositories for the disposal of radioactive waste rely partly on the integrity of canisters and on the inhibition of microbial growth by the bentonite barrier for the effective isolation of the waste from the environment. Canister integrity can be compromised by the activity of sulfate-reducing bacteria (SRB) and by abiotic corrosion. Unexpected aerobic microbial growth and SRB [...]
Holocene relative sea-level changes from the Atlantic coast of South America
Published: 2025-07-19
Subjects: Earth Sciences, Geology, Geomorphology
Holocene sea-level changes along the Atlantic coast of South America reflect a complex interplay between glacio-isostatic adjustment (GIA), regional tectonics, and local sedimentary processes. However, the uneven spatial and temporal resolution of existing sea-level data has hindered regional-scale assessments. Here, we compile and standardize 1108 relative sea-level (RSL) data points from [...]
Existence of Charnockites in Hellas Basin, Mars
Published: 2025-07-18
Subjects: Physical Sciences and Mathematics
Charnockite, an orthopyroxene-bearing granitic rock, is formed under high-temperature and high-pressure environments. Charnockite exhibits spectral characteristics similar to mafic rocks in the VNIR region and shows low emissivity at ~ 8.5 µm due to its high quartz content in the TIR region. The association of charnockite with the Anorthosite-Mangerite-Charnockite-Granite suite make it a suitable [...]
Out of Afar: the first hominin migration? Long-term landscape changes in the Afar region and implications for hominin bipedalism
Published: 2025-07-18
Subjects: Paleontology
Climate change in Africa has long been considered to be a key driver in hominin behavioural adaptations such as bipedalism. The prevailing argument holds that open grasslands favoured the adoption of bipedalism, which can be defined as one of three types: facultative, habitual, and obligate. Across Africa, only one region, Ethiopia, shows evidence of hominins showing all three types of [...]
The Seismic Fingerprint of Tree Sway
Published: 2025-07-18
Subjects: Physical Sciences and Mathematics
Climate change is increasing the frequency and intensity of extreme events like heat waves, droughts, and storms, placing forests under growing physiological and mechanical stress. Common indicators of tree stress, such as sap flow, stomatal conductance, water potential, or photosynthetic activity, provide valuable insights but are costly, maintenance-intensive, and difficult to scale for [...]
Desert dust exerts a substantial longwave radiative forcing missing from climate models
Published: 2025-07-17
Subjects: Physical Sciences and Mathematics
Historical increases in desert dust have affected climate by perturbing Earth’s energy balance, including through interactions with longwave radiation that remain poorly quantified. Here, we use a data-driven analytical model to estimate the global dust longwave direct radiative effect (DRE). Our results align with observational estimates of longwave radiative effects, constraining the [...]
Ice dynamic and hydrological response to ice-dammed lake drainages at Isunnguata Sermia, West Greenland
Published: 2025-07-17
Subjects: Earth Sciences, Glaciology, Physical Sciences and Mathematics
Ice-marginal lakes are increasingly common around Greenland and are important for modulating glacier runoff and dynamics. This study investigates the evolution of a ~3 km2 and up to ~100 m deep ice-dammed lake at Isunnguata Sermia, West Greenland. Satellite observations between 1987 and 2024, and field observations of a 2023 drainage using passive seismics, GNSS and time-lapse imagery reveal that [...]
Comments on “Osmosis Drives Explosions and Methane Release in Siberian Permafrost” by Morgado et al. 2024
Published: 2025-07-16
Subjects: Earth Sciences
This commentary addresses the model proposed by Morgado et al. (2024) in their paper, “Osmosis Drives Explosions and Methane Release in Siberian Permafrost.” The model explores the role of osmotic pressures in explaining the formation of gas escape craters in the Western Siberian permafrost. While it presents a novel perspective on permafrost dynamics under climate change, three significant [...]
A Constraint-Convergent Framework for Tornado Formation (the ARCH Equation)
Published: 2025-07-15
Subjects: Physical Sciences and Mathematics
Despite significant advances in meteorological observation and modeling, the precise prediction of tornado occurrence remains a persistent challenge. Traditional forecasting approaches often rely on additive or probabilistic frameworks, assuming that the likelihood of a tornado increases as favorable parameters accumulate. However, many environments that appear highly conducive to tornadoes fail [...]
Artificial Intelligence in Climate Science: A State-of-the-Art Review (2020–2025)
Published: 2025-07-15
Subjects: Computer Sciences, Earth Sciences, Environmental Sciences, Statistics and Probability
Climate change is intensifying extreme weather events and posing complex challenges to human and natural systems. In parallel, rapid advances in artificial intelligence (AI) and machine learning (ML) offer new tools to tackle climate science problems. AI can analyze vast climate datasets, improve forecasts, and optimize climate solutions at scales and speeds beyond traditional methods. For [...]
Statistical rock physics inversion for assessing source rock properties from seismic signatures: an application to the Canning Basin, Australia
Published: 2025-07-15
Subjects: Applied Statistics, Earth Sciences, Geology, Geophysics and Seismology, Physical Sciences and Mathematics, Statistics and Probability
Quantifying petrophysical properties and potentials of source rocks is important for subsurface modeling and characterization. However, predicting these properties using seismic signatures and well-log information is a high-dimensional, nonlinear inverse problem, and is subject to uncertainty due to data ambiguities. In this study, a statistical rock physics inversion workflow is proposed to [...]
Screening Global Solar and Wind Energy Investment Potential Accounting for Drought and Surplus
Published: 2025-07-14
Subjects: Environmental Engineering, Oil, Gas, and Energy, Risk Analysis, Sustainability
Climate-induced variability of solar and wind energy impacts renewable electricity scaling. Long duration renewable energy droughts, i.e., extended periods of renewable supply deficits, lead to contract penalties or use of thermo-electric sources, while long duration surpluses result in curtailment or in low energy prices and revenue. We present the first global assessment of the implied [...]
Volcano-tectonic controls on magmatic evolution at Campi Flegrei, Italy: insights from thermodynamic modelling
Published: 2025-07-14
Subjects: Earth Sciences, Geochemistry, Physical Sciences and Mathematics, Volcanology
Campi Flegrei caldera (Naples, southern Italy) is one of the most hazardous volcanoes on Earth, having produced more than 70 eruptions in the past 15 kyr, and currently showing significant signs of unrest within a densely populated part of Europe. Post-15 ka eruptions span a range of eruptive styles and compositions, which broadly correlate with the spatial and structural location of vents within [...]
Flux Modulated Magmatic Architecture in Continental Magmatic Arcs
Published: 2025-07-14
Subjects: Physical Sciences and Mathematics
Petrochronology of the magmatic reservoir that underpinned the Chaxas Volcanic Complex for the duration of its 8.59 – 1.24 Ma lifecycle reveals that magmatic architecture can be regulated by magmatic flux. Modulation of the magmatic reservoir was controlled via two distinct flux regimes during the Pre-Chaxas and Chaxas Complex stages of the Chaxas Volcanic Complex, emphasizing the dynamic nature [...]
Microbe-vegetation-nutrient interactions affect long-term carbon accumulation in a northern peatland
Published: 2025-07-13
Subjects: Environmental Sciences