Preprints

Filtering by Subject: Engineering

Mineral precipitation and geometry alteration in porous structures: How to upscale variations in permeability-porosity relationship?

Mohammad Masoudi, Mohammad Nooraiepour, Hang Deng, et al.

Published: 2024-01-11
Subjects: Earth Sciences, Engineering, Environmental Sciences, Physical Sciences and Mathematics

Porous materials in natural and engineered environments are subject to morphological changes resulting from interacting chemical and physical processes. The complexity of coupled flow, transport, and chemical processes that occur on different temporal and spatial scales makes it difficult to predict the resulting porosity and permeability alterations. Delineating the controls of mineral [...]

A Review of Geological and Climatic Variables in Groundwater Availability Prediction in Africa: Machine Learning Approaches

Haoulata Touré, Cyril Dziedzorm Boateng, Solomon S.R. Gidigasu, et al.

Published: 2024-01-08
Subjects: Engineering

Groundwater is crucial for Africa's potable water supply, agriculture, and economic development. However, the continent faces challenges with groundwater scarcity due to factors like population growth, climate change, and over exploitation. Over the past ten years, machine learning has been increasingly and successfully used in groundwater level prediction across the world. This review paper [...]

On sea ice emission modeling for MOSAiC's L-band radiometric measurements

Ferran Hernández-Macià, Carolina Gabarro, Marcus Huntemann, et al.

Published: 2023-12-21
Subjects: Engineering, Physical Sciences and Mathematics

The sea ice thickness retrieval using L-band passive remote sensing requires robust sea ice emission models. In this work, measurements from surface-based radiometers during MOSAiC are assessed with the Burke, Wilheit and SMRT models. These models encompass three distinct methodologies: incoherent without scattering, incoherent with scattering, and coherent approaches. Before running them, the [...]

Investigation of Liquefaction Potential in Sands Mixed with Gravel

wenbo luo, Zhuoqiang wen

Published: 2023-12-21
Subjects: Engineering

Liquefaction is one of the significant hazards associated with earthquakes. It was previously believed to occur mostly in clean sands; however, recent research has shown that liquefaction can occur in specific conditions in sands mixed with fine or coarse particles. Numerous studies have been conducted on clean sand, while limited research has focused on sands mixed with silt. Nevertheless, the [...]

Sustainable Living Unveiled: A Comprehensive Review of Key Studies on Zero Energy Homes

Alexis Sue White, Shaylee Grace Zimmerman, Timothy Alan Gurney, et al.

Published: 2023-12-21
Subjects: Engineering, Life Sciences

The journey to achieve Net Zero Energy in residential areas has progressed slowly. However, in recent times, the research behind accessing Net Zero has become more consistent. This paper discusses the steps to be taken in terms of technology, energy consumption, and energy efficiency to reach the goal of Net Zero. The timeline has been changed throughout discovering new and improved ways to [...]

Zero Energy Homes: Definitions, Design Considerations, Challenges, and Real-world Applications

George Elliott Joyce, Nathaly Loaiza Valenzuela, Graciela Camacho Ramirez, et al.

Published: 2023-12-20
Subjects: Engineering, Life Sciences

In the pursuit of sustainable living, Zero Energy Homes (ZEHs) have emerged as a promising solution to mitigate the carbon footprint of residential housing. This review paper explores the multifaceted realm of ZEHs by examining diverse definitions, design considerations, challenges, and real-world applications. The lack of standardized definitions is addressed, encompassing variations from [...]

On the economic feasibility of tidal range power plants

Konstantinos Pappas, Nguyen Quang Chien, Ilias Zilakos, et al.

Published: 2023-12-17
Subjects: Civil and Environmental Engineering, Computational Engineering, Engineering, Environmental Engineering, Hydraulic Engineering

The wave potential energy associated with tides presents a promising sustainable energy resource. Uncertainties on the economic case of tidal range power plants are a known bottleneck hindering the development of the industry. Significant costs depend on each design's general arrangement, which includes both mechanical components and the associated civil works. Research on tidal range structures [...]

Transdisciplinary doctoral training to address global sustainability challenges

Zoie Taylor Diana, John Virdin, Michelle Nowlin, et al.

Published: 2023-12-14
Subjects: Education, Engineering, Life Sciences, Social and Behavioral Sciences

MultiRS Flood Mapper: A Google Earth Engine Application for Water Extent Mapping with Multimodal Remote Sensing and Quantile-Based Postprocessing

Zhouyayan Li, Ibrahim Demir

Published: 2023-12-11
Subjects: Engineering, Geotechnical Engineering, Hydraulic Engineering

Remote Sensing (RS) imagery is an important data source in surface water mapping applications thanks to its high spatial and temporal consistency and scalability. The introduction of Google Earth Engine (GEE) has cleared some of the major barriers of fast and large-scale RS-based geospatial analyses by providing easy and open access to most of the commonly used RS image products as well as [...]

Salt Precipitation during Geological CO2 Storage: Effect of Access to Continuous Brine Source

Mohammad Masoudi, Mohammad Nooraiepour, Helge Hellevang

Published: 2023-12-08
Subjects: Earth Sciences, Engineering, Environmental Sciences

During CO2 storage, the near-wellbore environment experiences significant chemical, physical, thermal, and mechanical perturbations. Therefore, it is crucial to characterize the coupled thermo-hydro-mechanical-chemical (THMC) processes in this region through representative experimental tests and numerical simulations to maximize the safety and cost-efficiency of CO2 storage. One common [...]

Precipitation Inequality Exacerbates Streamflow Inequality, but Dams Moderate it

Sai Kiran Kuntla, Manabendra Saharia, Samar Prakash, et al.

Published: 2023-12-04
Subjects: Engineering

Access to clean water is a fundamental human right, yet millions worldwide face the dire consequences of water scarcity and inadequate sanitation. Water inequality, characterized by disparities in access and availability of water resources, has emerged as a critical global challenge with far-reaching social, economic, and environmental implications. Using a globally representative observational [...]

Advancing hydrological monitoring using image-based techniques: challenges and opportunities

Salvatore Manfreda, Domenico Miglino, Khim Cathleen Saddi, et al.

Published: 2023-11-17
Subjects: Engineering, Life Sciences

Enhanced and effective hydrological monitoring plays a crucial role in understanding water-related processes in a rapidly changing world. This paper explores the challenges and opportunities associated with image-based hydrological monitoring techniques, and highlights the need for innovative approaches and technologies to overcome existing limitations. Image-based hydrological monitoring has [...]

Leveraging Past Information and Machine Learning to Accelerate Land Disturbance Monitoring

Su Ye, Zhe Zhu, Ji Won Suh

Published: 2023-11-14
Subjects: Engineering

Near real time (NRT) monitoring of land disturbances holds great importance for delivering emergency aids, mitigating negative social and ecological impacts, and distributing resources for disaster recovery. Many past NRT techniques were built upon examining the overall change magnitude of a spectral anomaly with a pre-defined threshold, namely the unsupervised approach. However, their lack of [...]

WITHDRAWN: Magma as a generator of plasma and thermonuclear reactions in the bowels of the Earth?

serguei bytchkov

Published: 2023-11-03
Subjects: Education, Engineering, Physical Sciences and Mathematics

Abstract removed when submission was withdrawn.

WITHDRAWN: Seismology for Dummies

serguei bytchkov

Published: 2023-11-03
Subjects: Education, Engineering, Physical Sciences and Mathematics

Abstract removed when submission was withdrawn.

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