Preprints
Filtering by Subject: Physical Sciences and Mathematics
Enzyme-Mediated Multiphase Precipitation (EMMP): An Innovative Strategy for Ecotoxic Metal Immobilization in Aqueous Systems
Published: 2025-05-16
Subjects: Engineering, Physical Sciences and Mathematics
Ecotoxic metal contamination in wastewater and soil poses a critical environmental challenge due to its persistence, toxicity, and bioaccumulation potential. While conventional biogeotechnical methods like Enzyme-Induced Carbonate Precipitation (EICP) and Microbial Induced Carbonate Precipitation (MICP) have shown promise for metal immobilisation, their application is limited by excessive [...]
Accuracy and realism of CMIP6 candidate models in capturing dry, moist, and extreme precipitation anomalies in the Laurentian Great Lakes.
Published: 2025-05-15
Subjects: Physical Sciences and Mathematics
The Great Lakes are the world’s largest freshwater system, and understanding how Great Lakes precipitation dynamics will be modified by climate change is of critical importance. As the Great Lakes straddles a semi-arid to humid transitional region, trustworthy precipitation predictions must be generated by models that can accurately capture both thermodynamical and dynamical drivers of regional [...]
Reducing Bias in Cropland Soil Organic Carbon and Clay Predictions using Sentinel-2 Composites and Data Balancing
Published: 2025-05-15
Subjects: Physical Sciences and Mathematics
Accurate maps of cropland soil organic carbon stocks (SOCS) and clay content are essential for climate-smart agriculture. Soil reflectance composites (SRC), derived from multispectral bare soil observations, offer a scalable approach to high-resolution soil mapping. While studies often focus on maximizing model performance, challenges remain regarding (1) the bias introduced by masking and [...]
Precursory Patterns, Evolution and Physical Interpretation of the 2025 Santorini-Amorgos Seismic Sequence
Published: 2025-05-13
Subjects: Physical Sciences and Mathematics
The 2025 Santorini-Amorgos seismic sequence marked a significant episode of volcanic-seismic unrest in the Hellenic Volcanic Arc, offering a unique opportunity to investigate precursory patterns and the dynamic evolution of seismicity in a complex tectonic setting. Here, we analyze the preparatory phase of the crisis using a high-resolution relocated seismic catalog, anomaly detection, and [...]
Luminescence Characteristics of Terrestrial Jarosite from Kachchh, India: A Martian Analogue
Published: 2025-05-11
Subjects: Life Sciences, Physical Sciences and Mathematics
In this study, naturally occurring jarosite samples from Kachchh India (considered to be Martian analogue) were characterized using Fourier Transform Infrared Spectroscopy (FTIR), Cathodoluminescence- Energy Dispersive X-ray Spectroscopy (CL-EDXS) and luminescence (thermoluminescence (TL), blue and infrared stimulated luminescence (BSL and IRSL) methods. FTIR and CL-EDXS studies suggested that [...]
Carbon-negative nickel mining to meet global mineral resource demands
Published: 2025-05-11
Subjects: Engineering, Physical Sciences and Mathematics
CO2-Enhanced Mineral Recovery (CO2-EMR) is a deep in situ mining technology that utilizes an engineered CO2 leaching fluid to extract nickel (Ni) and cobalt (Co) from subsurface ultramafic rocks, while simultaneously permanently mineralizing CO2 as carbonate minerals. This carbon negative process can contribute to meeting the mineral demands of current and emerging energy technologies. We [...]
Surface tension estimation of bubble nuclei in magma using spinodal pressure and nonclassical nucleation theory
Published: 2025-05-11
Subjects: Physical Sciences and Mathematics
Efforts to estimate the magma decompression rate from the vesicular texture of volcanic products have progressed through the development of theoretical models and laboratory experiments. The theoretical model is based on nucleation theory, with the surface tension between the melt and bubble nucleus being the parameter that most strongly governs nucleation. Since direct estimation of surface [...]
The complex rupture dynamics of an oceanic transform fault: supershear rupture and deep slip during the 2024 Mw7.0 Cape Mendocino Earthquake
Published: 2025-05-09
Subjects: Physical Sciences and Mathematics
The December 5, 2024, Mw7.0 Cape Mendocino earthquake ruptured an oceanic transform fault within the tectonically complex Mendocino Triple Junction (MTJ), the most seismically active region of California and caused a soon-lifted tsunami evacuation alert. Its offshore location renders accurate analysis of source characteristics challenging. We integrate back-projection, geodetic and kinematic slip [...]
Statistical Physics of Fissure Swarms and Dike Swarms
Published: 2025-05-08
Subjects: Physical Sciences and Mathematics
Fissure swarms and dike swarms in Iceland are 40-150 km long, 5-20 km wide, extend to depths of 10-20 km and contain 2 × 10exp14 outcrop-scale ( 0.1 m) and 10 exp 22-23 down to grain-scale (1 mm) fractures, suggesting that statistical physics is an appropriate method of analysis. Length-size distributions of 565 outcrop-scale Holocene fissures (tension fractures and normal faults) and 1041 [...]
Duration of Super-Emitting Oil & Gas Methane Sources
Published: 2025-05-07
Subjects: Physical Sciences and Mathematics
The duration of super-emitting events in oil & gas basins remains poorly understood but is key for informing reporting programs and mitigation strategies. Carbon Mapper conducted intensive aerial surveys from April 30 to May 17, 2024, over the New Mexico portion of the Permian Basin to estimate super-emitter durations directly from observations, covering 276,000 wells, 1100 compressor [...]
Earthquake Swarm in Santorini - Greece: Recurrence Quantification Analysis and Investigation of Causal Relationship with Tidal Forces
Published: 2025-05-07
Subjects: Physical Sciences and Mathematics
In early 2025, an unusual earthquake swarm initiated in the sea area of the small uninhabited islet Anydros between Santorini and Amorgos islands in Greece. The unusual nature of this seismic activity and its subsequent seismic follow-up, motivated us to study its dynamical and statistical features. Namely, we investigated for a potential causal relationship between a simple model of [...]
Global Energy Sector Methane Emissions Estimated by using Facility-Level Satellite Observations
Published: 2025-05-06
Subjects: Other Physical Sciences and Mathematics, Physical Sciences and Mathematics
Methane emissions from energy sector facilities (oil, gas, and coal) represent a significant contribution to global greenhouse gas emissions with substantial mitigation potential. We estimate global 2023 methane emissions from energy sector point-sources using the high spatial resolution GHGSat satellite constellation. GHGSat detected 8.30±0.24 Mt yr-1 of methane emissions from 3,114 attributed [...]
Marine Geohazards and Geo-Engineering Constraints on the Glaciated European Margins
Published: 2025-05-06
Subjects: Engineering, Physical Sciences and Mathematics
The glaciated European continental margins (spanning 49-82°N and 16°W-36°E) are home to a thriving offshore energy sector and densely inhabited coastal areas. These regions face numerous marine geohazards and geo-engineering challenges due to complex subsurface conditions shaped by large-scale geological and climate processes. The geological complexity of this area is among the highest globally, [...]
Modulation of tropical cyclogenesis on subseasonal-to-interannual timescales in the deep-learning climate emulator ACE2
Published: 2025-05-02
Subjects: Physical Sciences and Mathematics
Deep-learning global climate emulators are providing a new lens to investigate tropical cyclogenesis (TC genesis). However, without explicitly enforcing known physics, it is necessary to assess whether TC genesis in these models is physical. To address this question, we use the Ai2 Climate Emulator version 2 (ACE2) trained on ERA5 reanalysis to investigate TC genesis and its relationship with the [...]
Biogenic origins and moon
Published: 2025-05-02
Subjects: Life Sciences, Physical Sciences and Mathematics
Astronomical discoveries of water abundance in protoplanetary disks are the basis of my hypothesis of a cool formation of the Earth by hydrous accretion in the habitable zone of the disk our solar system derived from, under different pressure conditions than in disks observed at present, chemical evolution in times of accretion, early beginning of prebiotic and biological life. I arrange some of [...]