Skip to main content

Preprints

There are 5441 Preprints listed.

Google Earth Engine Approach in Monitoring of Mangrove Forest in Govatr Bay, on Oman Sea

Sabrieh Shahbazi, Mansooreh Majidi

Published: 2025-04-05
Subjects: Earth Sciences, Geography

This study investigates geomorphological changes influencing mangrove habitats along Iran's coastline using satellite photos to identify crucial sites for coastal management. Biogeomorphol-ogy helps to solve real-world problems, such as mangrove restoration and coastal management. This study explored the relationship between coastal mangrove habitats and local geomorpholo-gy in Govatr Bay by [...]

An event-based methodology to estimate emissions from upstream O&G sites

Mozhou Gao, Zahra Ashena, Steve H.L. Liang, et al.

Published: 2025-04-05
Subjects: Engineering, Physical Sciences and Mathematics

Estimating annual site-level emissions in the oil and gas (O&G) sector is a key requirement for regulatory and voluntary initiatives worldwide. This study introduces an Emission Event Data Model (EEDM) that applies Allen’s interval algebra and spatial proximity to group multi-scale emissions observation and O&G operational data into discrete events. The model classifies emissions events [...]

A New Fault Model for the 1933 Long Beach Earthquake, Long Beach Area, Southern California

Steve Boljen, Dan Gish

Published: 2025-04-05
Subjects: Earth Sciences, Geology, Geophysics and Seismology, Physical Sciences and Mathematics

Newly identified thrust faults and their corresponding thrust sheets, combined with recent micro-earthquake epicenters, better explain anomalous rupture data observed during the 1933 Long Beach Earthquake than previous models based exclusively on Newport-Inglewood Fault Zone strike-slip faulting. A high-quality 45 km2 3D seismic dataset was recorded in 2017, centered along the Seal Beach [...]

Dating Oligocene-Recent siliciclastic sediment sequences from the Norwegian Sea

Tjerk Veenstra, Francesca Sangiorgi, Vidar Bakker, et al.

Published: 2025-04-04
Subjects: Stratigraphy

The Norwegian Sea is crucial for ocean circulation and global climate and has therefore long been a focus in paleoceanography. However, precise dating of sediments has often proved difficult, due to poor preservation and endemism among microfossils and the discontinuous nature of many records. One important Norwegian Sea Site, Ocean Drilling Program (ODP) Site 643, is of particular interest, [...]

Salinas Valley Integrated Hydrologic and Reservoir Operations Models, Monterey and San Luis Obispo Counties, California Pre-Print

Wesley Henson, Randall T Hanson, Scott Boyce, et al.

Published: 2025-04-04
Subjects: Hydrology, Sustainability, Water Resource Management

The area surrounding the Salinas Valley groundwater basin in Monterey and San Luis Obispo Counties of California is a highly productive agricultural area, contributes significantly to the local economy, and provides a substantial portion of vegetables and other agricultural commodities to the Nation. This region of California provides about half of the Nation’s lettuce, celery, broccoli, and [...]

Geoscientific Input Feature Selection for CNN-driven Mineral Prospectivity Mapping

Arya Kimiaghalam, Kyubo Noh, Andrei Swidinsky

Published: 2025-04-04
Subjects: Physical Sciences and Mathematics

In recent years, machine learning techniques such as convolutional neural networks have been used for mineral prospectivity mapping. Since a diverse range of geoscientific data are often available for training, it is computationally challenging to select a subset of features that optimizes model performance. Our study aims to demonstrate the effect of optimal input feature selection on [...]

Chaotic variability of the magnetic field at Earth's surface driven by ionospheric and space plasmas

Alexander Bershadskii

Published: 2025-04-04
Subjects: Physical Sciences and Mathematics

It is shown that the universal chaotic/turbulent processes in space (solar wind and magnetosphere) and in ionospheric plasmas drive the chaotic temporal variability and determine the level of randomness of the magnetic field at Earth's surface in the temporal range from a few hours to a few years. The results of observations provided by the spacecraft and satellite missions, and the global [...]

Inequities in Indoor Exposure to Wildfire-Related PM2.5 Across the Contiguous United States

Jing Li, Xinlei Liu, Qiao Yu, et al.

Published: 2025-04-04
Subjects: Medicine and Health Sciences, Social and Behavioral Sciences

Exposure to wildfire smoke has been recognized as a major public health concern, but existing studies have focused on outdoor air, despite the fact that most people spend the majority of their time indoors, especially during wildfires. Here, we estimated indoor wildfire-related fine particulate matter (PM2.5) concentrations across 72,537 census tracts in the contiguous United States for the year [...]

Spatio-temporal variability in stable water isotopes of Brahmaputra river system and its implications

Madhusmita Nanda, Archana M Nair

Published: 2025-04-04
Subjects: Engineering

The Brahmaputra river system is one of Asia's largest and most dynamic transboundary rivers. Yet, significant investigations on the isotopic signature of its water are limited and not documented. This study aims to address the limitations in datasets and enhance the knowledge of the river's complex hydrological processes and its climatic influence using the stable isotope technique. Over 1-2 [...]

Active Face Emissions: An Opportunity for Reducing Methane Emissions in Global Waste Management

David Risk, Athar Omidi, Evelise Bourlon, et al.

Published: 2025-04-03
Subjects: Physical Sciences and Mathematics

This study used mobile surveys of ten Canadian landfills to assess how methane emissions varied across different landfill sources and operational conditions. The studied landfills included two closed landfills, four open landfills equipped with Gas Collection and Control Systems (GCCS), and four open landfills operating without GCCS. We employed the Gaussian dispersion model to estimate emissions [...]

Nuclear Winter Could Sever Urban Water Access Across the Northern Hemisphere

Juan Esteban Lamilla Cuellar, Rachel Palm, David Denkenberger, et al.

Published: 2025-04-03
Subjects: Civil and Environmental Engineering, Earth Sciences, Risk Analysis, Water Resource Management

The continuous functioning of the underground water supply networks is essential for many aspects of modern civilization. Therefore, it is essential to keep such critical infrastructure safe from disasters. However, existing risk assessment studies often assume relatively stable climate conditions. Abrupt sunlight reduction scenarios, such as those caused by a nuclear war, a large volcanic [...]

Multiple scattering of seismic waves in a heterogeneous magmatic system and spectral characteristic of long period volcanic earthquakes

Mirko Bracale, Michel Campillo, Nikolai M. Shapiro, et al.

Published: 2025-04-03
Subjects: Physical Sciences and Mathematics

Long-Period (LP) volcanic earthquakes are characterized by a relatively long duration codas and spectra containing pronounced spectral peaks. These peculiar spectral characteristics are often attributed to source effects, such as resonances of fluid-filled cracks. In this paper, we report the results of numerical simulations of seismic wave propagation showing that the main signal features of the [...]

Embedding seismic scattering from seismograms

Reza Esfahani, Mirko Bracale, Léonard Seydoux, et al.

Published: 2025-04-03
Subjects: Physical Sciences and Mathematics

Heterogeneities in the Earth's crust scatter seismic waves at many scales, trapping seismic energy and producing coda waves that encode valuable information on geological structures. In regions such as volcanoes and fault systems, analyzing coda waves is essential for characterizing non-uniform subsurface heterogeneity, improving interpretation and seismic imaging. Here, we apply unsupervised [...]

Anthropogenic Interference in Aeolian Processes in Kerman Plain, Southeastern Iran

Sabrieh Shahbazi, Hamid Ganjaeian

Published: 2025-04-02
Subjects: Earth Sciences, Environmental Sciences, Environmental Studies, Geography

Dry climate, poor vegetation and relatively smooth topography are the most important factors that brought about wind erosion processes prevail in the Kerman plain. Aeolian sediments in the Kerman plain can be divided into active and stabilized sediments. Stabilized sediments show a cross-bedding structure and coarser-grained fluvial sediments are found between layers of aeolian sediments. [...]

Examining copper supply feasibility in decarbonization pathways: a mine-level dynamic approach

Gaël Parpan, Baptiste Andrieu, Olivier Vidal, et al.

Published: 2025-04-01
Subjects: Engineering, Physical Sciences and Mathematics

Primary copper production capacity is a major concern in light of estimates of future demand. This issue is not sufficiently taken into account in models providing decarbonization pathways. Our study assesses the feasibility of SSPs basic drivers for primary copper requirements derived from the DyMEMDS model, alongside our projections of primary copper production capacities. We introduce a [...]

search

You can search by:

  • Title
  • Keywords
  • Author Name
  • Author Affiliation