Preprints
Filtering by Subject: Physical Sciences and Mathematics
Aerosol from the Asian monsoon ubiquitous throughout the extratropical stratosphere
Published: 2026-02-12
Subjects: Physical Sciences and Mathematics
Asian summer monsoon (ASM) convection efficiently transports surface emissions into the upper troposphere, leading to the formation of the Asian tropopause aerosol layer (ATAL). The ATAL can affect Earth’s climate directly by scattering solar radiation and indirectly by cloud formation. Little is known about the global distribution of aerosol originating in the ASM, particularly in the [...]
Multiple-Well Monitoring Site Adjacent to the Midway- Sunset and Buena Vista Oil Fields, Kern County, California
Published: 2026-02-12
Subjects: Earth Sciences, Geochemistry, Geology, Hydrology, Physical Sciences and Mathematics
Groundwater quality in and around oil fields in the Southern San Joaquin Valley is of interest to many California residents that rely heavily on groundwater for domestic, commercial, and agricultural use. To help assess the effects of historical oil-field activities and natural geologic sources on groundwater near the southwest margins of the Kern County Groundwater Subbasin, a multiple-well [...]
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 [...]
HyGage: Solving the Hysteresis Puzzle with a New Streamflow Monitoring Method
Published: 2026-02-12
Subjects: Engineering, Physical Sciences and Mathematics
The questionable reliability of discharges obtained using the traditional stage–discharge method under gradually varied flow conditions continues to motivate the search for improved monitoring approaches that support water resources management, streamflow forecasting, and multipurpose scientific investigations related to the water cycle. This paper introduces HyGage, a new physically based [...]
Escape of near-inertial waves trapped in strong fronts through wave-wave interactions
Published: 2026-02-10
Subjects: Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics
Elevated in-situ Vp/Vs preceding hydraulic-fracturing-induced earthquakes
Published: 2026-02-04
Subjects: Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics
Effective management of seismic hazard in geo-energy development demands real-time estimates of subsurface fault instability. However, real-time monitoring of pore pressure change during subsurface fluid injection remains challenging. Here, we present a novel high-resolution, non-tomographic monitoring strategy that tracks the ratio of seismic wave speeds (Vp/Vs) as a proxy for pore pressure [...]
ZDR Column Behavior in Real and Simulated X-band Radar Observations of Potentially Tornadic Storms
Published: 2026-02-03
Subjects: Physical Sciences and Mathematics
The primary objective of this research is to characterize distinct differential reflectivity (ZDR) column behavior with respect to height, intensity, and aerial coverage prior to tornadogenesis (failure) in X-band radar observations of supercells. ZDR observations of three supercells observed at high spatiotemporal resolution with X-band polarimetric radar, two tornadic and one nontornadic, are [...]
Energy-Driven Radius Evolution of Chthonian Planets: A Viscoelastic Maxwell Framework with Applications to Earth
Published: 2026-02-03
Subjects: Engineering, Physical Sciences and Mathematics
Chthonian planets—dense rocky or metallic remnants of gas giants stripped of their gaseous envelopes—experience extreme internal pressures and energy densities, making their structural evolution fundamentally different from classical terrestrial planets. We aim to develop a physically grounded framework to describe energy-driven radius evolution in such bodies and to understand how internal [...]
A Multivariable Calculus Sustainability Infusion
Published: 2026-02-02
Subjects: Applied Mathematics, Other Applied Mathematics, Physical Sciences and Mathematics
Climate change is one of the big challenges facing this generation. Given the threats faced by climate change, it is important that everyone have an education that allows them to engage with the issue as an informed member of society. Typical math courses rarely include examples from Earth science or ecology as part of the curriculum. Incorporating sustainability into pre-requisite math classes [...]
Sampling variability under extreme skewness: sample size guidance for future methane measurement campaigns
Published: 2026-02-02
Subjects: Physical Sciences and Mathematics
Methane emissions from the oil and gas sector follow highly right-skewed distributions, making it hard to accurately quantify average emissions with a limited number of measurements. In this study, we probe the statistical implications of sampling (i.e., measuring) from these highly right-skewed distributions, using six US oil and gas basins as an example. For each basin, we provide a minimum [...]
Rethinking Vertical Transport of Buoyant Plastics in Open Channels
Published: 2026-02-02
Subjects: Engineering, Physical Sciences and Mathematics
Recent studies have demonstrated that the vertical distribution of positively buoyant plastic particles in turbulent open channel flows can be described by a modified Rouse profile. However, implicit observations in the literature also suggest that floating particles remain confined to the air–water interface due to surface tension forces. To shed more light on this apparent contradiction, we [...]
Improving 210Po low level measurements in seawater
Published: 2026-01-28
Subjects: Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics, Physics
Ocean is the largest sink of atmospheric carbon, atmospheric CO2 is synthesized by surface phytoplankton into particle organic carbon (POC) that is exported from the ocean surface to depth, where it can be stored for years. An accurate quantification of downward POC flux is crucial for making reliable predictions of present and future atmospheric CO2 concentrations. A method based on the [...]
Do 3D Dynamic Rupture Models Capture the Variability in Long-Period Velocity Pulses? Insights from the 2023 Mw 7.8 Kahramanmaraş Earthquake
Published: 2026-01-28
Subjects: Physical Sciences and Mathematics
Capturing ground motion variability, especially in near-fault long-period velocity pulses, is a key challenge for seismic hazard assessment. Empirical methods often rely on simplified assumptions and may not fully capture the non-linear interplay of source, path, and site effects. Physics-based dynamic rupture simulations offer a self-consistent alternative, but their ability to reproduce [...]
Near-total loss of buttressing stresses observed on Pine Island Ice Shelf, West Antarctica
Published: 2026-01-27
Subjects: Earth Sciences, Glaciology, Physical Sciences and Mathematics
Ice shelves, the floating extensions of the Antarctic Ice Sheet, provide critical buttressing stresses that resist the seaward flow of ice and help set the position of the grounding line, where the ice goes afloat. As buttressing stresses are diminished by thinning or fracturing and collapse of the ice shelf, glaciers tend to accelerate. Here, we focus on the response of Pine Island Ice Shelf [...]
Spontaneous liquefaction in saturated granular deposits: State controlled boundary and surface reconfiguration
Published: 2026-01-26
Subjects: Civil and Environmental Engineering, Civil Engineering, Earth Sciences, Engineering, Engineering Science and Materials, Environmental Engineering, Environmental Sciences, Geotechnical Engineering, Hydraulic Engineering, Mechanics of Materials, Mining Engineering, Other Civil and Environmental Engineering, Physical Sciences and Mathematics, Risk Analysis
In the case of water-saturated, granular deposits that are at risk of liquefaction, engineers need reliable information about the spatial extent of soil deformation in the event of liquefaction. It is not so important for them to know the exact location of the first failure. However, existing anal-yses primarily deal with the triggering of liquefaction and offer only limited information on how [...]