Preprints
There are 4747 Preprints listed.
Opening Doors to Physical Sample Data Discovery, Integration, and Credit
Published: 2024-05-31
Subjects: Biochemistry, Biophysics, and Structural Biology, Earth Sciences, Ecology and Evolutionary Biology, Environmental Sciences, Life Sciences, Microbiology, Physical Sciences and Mathematics, Systems Biology
Physical samples and their associated (meta)data underpin scientific discoveries across disciplines, and can enable new science when appropriately archived. However, there are significant gaps in community practices and infrastructure that currently prevent accurate provenance tracking, reproducibility, and attribution. For the vast majority of samples, descriptive metadata is often sparse, [...]
STUDY OF THERMOLUMINESCENCE CHARACTERISTICS OF QUARTZ FOR HIGH RADIATION DOSES (>1KGY): IMPLICATIONS FOR EXTENDING THE LUMINESCENCE DATING RANGE
Published: 2024-05-31
Subjects: Life Sciences, Physical Sciences and Mathematics
Quartz is an omnipresent abundant natural mineral, used for luminescence dating. Lately, quartz optically stimulated luminescence (OSL) technique is widely used to estimate the equivalent doses (De) for dating geological events (up to 250 Gy, limited by saturation). Some works report thermoluminescence (TL) saturation around ~ (10-40) kGy. Still dose estimates for such high radiation dose (HRD) [...]
Unique composition and evolutionary histories of low velocity mantle domains
Published: 2024-05-31
Subjects: Earth Sciences, Geophysics and Seismology, Other Earth Sciences, Physical Sciences and Mathematics
The two `large low velocity provinces' (LLVPs) are broad seismic wave speed anomalies in Earth's lower mantle beneath Africa and the Pacific Ocean. Recent research suggests they represent volumes that contain relatively dense subducted oceanic crust (SOC), but the distribution of recycled material within them is an open question. Using simulations of 3-D global-scale mantle circulation over the [...]
Future changes in seasonal drought in Australia
Published: 2024-05-30
Subjects: Physical Sciences and Mathematics
Climate change is expected to exacerbate the frequency and intensity of drought in many water-limited regions. However, future drought changes in Australia –the driest inhabited continent on Earth– have remained stubbornly uncertain due to a lack of model agreement in projected precipitation changes in most regions. We use an ensemble of future projections from the National Hydrological [...]
Large indirect economic impacts of tropical cyclones shaped by disaster response
Published: 2024-05-30
Subjects: Physical Sciences and Mathematics, Social and Behavioral Sciences
Tropical cyclones (TCs) have direct economic impacts, destroying property, crops, and infrastructure. However, the sign and magnitude of their indirect impacts via longer-term changes in economic output remain unclear. Here we use data on TC winds and county-level income in the U.S. to quantify the indirect impacts of TCs on incomes in the years following a TC. We find a nonlinear response of [...]
HarvestGRID: High-resolution harvested crop areas of the United States from 1981 to 2019
Published: 2024-05-29
Subjects: Agriculture, Civil and Environmental Engineering, Engineering, Life Sciences, Sustainability, Water Resource Management
The United States is a major producer and exporter of agricultural goods, fulfilling global demands for food, fiber, and fuel while generating substantial economic benefits. Agriculture in the U.S. not only dominates land use but also ranks as the largest water-consuming sector. High-resolution cropland mapping and insights into cultivation trends are essential to enhance sustainable management [...]
Ringing mountain ranges: Teleseismic signature of the interaction of high-frequency wavefields with near-source topography at the Degelen nuclear test site
Published: 2024-05-26
Subjects: Geophysics and Seismology
Over the last decade there has been an international effort to find methods to recover and digitize recordings from historical earthquakes and explosions that occurred during the 1950’s through to the 1980’s. Making these recordings accessible in digital format offers opportunities to study what signatures are encoded in the data, and to apply state-of-the-art techniques and methods to historical [...]
Local water year values for the conterminous United States
Published: 2024-05-25
Subjects: Fresh Water Studies, Water Resource Management
Quantifying and predicting precipitation and its influence on ecosystems is challenged by the asynchrony between precipitation and water fluxes. To account for this asynchrony, scientists and managers use “water year” to estimate precipitation and its impacts on water flow and ecosystems. However, traditional water year definitions either do not consider areal variation in climate and hydrology [...]
A Comprehensive Evaluation of Multimodal Large Language Models in Hydrological Applications
Published: 2024-05-25
Subjects: Artificial Intelligence and Robotics, Environmental Monitoring, Hydrology
Large Language Models (LLMs) combined with visual foundation models have demonstrated remarkable advancements, achieving a level of intelligence comparable to human capabilities. In this study, we conduct an analysis of the latest Multimodal LLMs (MLLMs), specifically Multimodal-GPT, GPT-4 Vision, Gemini and LLaVa, focusing on their application in the hydrology domain. The hydrology domain holds [...]
Rising temperatures drive lower summer minimum flows across hydrologically diverse catchments
Published: 2024-05-25
Subjects: Hydrology, Water Resource Management
Excessively low stream flows harm ecosystems and societies, so two key goals of low-flow hydrology are to understand their drivers and to predict their severity and frequency. We show that simple linear regressions can accomplish both goals across diverse catchments. We analyse 230 unregulated moderate to high relief catchments across rainfall-dominated, hybrid, snowmelt-dominated, and glacial [...]
Can We Reverse Global Warming?
Published: 2024-05-25
Subjects: Physical Sciences and Mathematics
Without mitigation, Climate Change is expected to costs large amounts of money, cause vast amounts of human suffering and death and threatens the survival of countless species. Rising global temperatures alone are expected to cause a drop in GDP of 30 – 70% for many countries with already high temperatures. In combination with other factors (population growth, increasing water stress, coastal [...]
Savings and Avoided Costs of Living Carbon Negative
Published: 2024-05-25
Subjects: Physical Sciences and Mathematics
In order to prevent the biodiversity losses anticipated under business-as-usual (BAU) conditions, and to prevent the associated enormous financial and human losses, the world has to transition to carbon negative economies, where for decades more CO2 will be sequestered than emitted. To abate and possibly reverse global warming, we need to both transition from fossil fuels to renewables (mainly [...]
Randomization of the Earth's magnetic field driven by magnetic helicty
Published: 2024-05-24
Subjects: Physical Sciences and Mathematics
It is shown, using results of numerical simulations and geomagnetic observations, that the spatial and temporal randomization of the Earth's global and local magnetic fields is driven by magnetic helicity (a magnetohydrodynamic invariant). In the frames of the distributed chaos notion, the magnetic helicity determines the degree of magnetic field randomization and the results of numerical [...]
River Morphology Information System: A Web Cyberinfrastructure for Advancing River Morphology Research
Published: 2024-05-23
Subjects: Civil and Environmental Engineering, Databases and Information Systems, Geographic Information Sciences, Software Engineering
The study and management of river systems are increasingly challenged by the complexity and volume of data required to understand and predict river morphology changes. The River Morphology Information System (RIMORPHIS) is introduced as a transformative solution to these challenges, serving as an open-access web-based cyberinfrastructure designed to enable advanced research in river morphology [...]
Predictable recovery rates in near-surface materials after earthquake damage
Published: 2024-05-23
Subjects: Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics
Earthquakes introduce transient mechanical damage in the subsurface, which causes postseismic hazards and can take years to recover. This observation has been linked to relaxation, a phenomenon observed in a wide class of materials after straining perturbations, but its duration after earthquake ground shaking has not been constrained. Here, we analyse the effects of two successive large [...]