Preprints
Filtering by Subject: Other Engineering
Adalar at the Eastern Marmara Seismic Gap: The August 2026 Earthquake Cluster and Its Implications for Seismic Hazard near Istanbul
Published: 2026-08-20
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering Science and Materials, Environmental Sciences, Geotechnical Engineering, Higher Education, Oceanography and Atmospheric Sciences and Meteorology, Other Engineering, Risk Analysis, Science and Mathematics Education, Structural Engineering
The eastern Marmara Sea and Adalar sector lie close to İstanbul and the western North Anatolian Fault, where earthquake-source processes interact with strong basin and site effects. This study integrates a reconciled earthquake catalog, waveform-quality measures, spatial statistics, trial hypocentral relocation, reconnaissance focal mechanisms, point-source Coulomb stress screening, and published [...]
Thermal Resilience During Prolonged Cooling Outages: A Multi-Zone Field Study of Disruption and Recovery in Arizona Apartments
Published: 2026-07-29
Subjects: Engineering, Other Engineering
Increasing frequency and severity of extreme heat events, and growing dependence on air-conditioning systems emphasize the need to evaluate thermal resiliency of buildings during cooling outages. Existing assessments often emphasize isolated metrics or steady state conditions and may not adequately characterize cumulative thermal exposure, thermal buffering, and post outage recovery. This study [...]
Rapid Fault Leakage Screening for CO₂ Storage Under Uncertainty: Application to a Faulted Miocene Aquifer in the Malay Basin
Published: 2026-07-22
Subjects: Earth Sciences, Geology, Other Engineering, Other Environmental Sciences, Transport Phenomena
Geological CO2 storage is critical for mitigating climate change, yet the risk of leakage along faults poses significant challenges. Faults function as structural traps or preferential CO2 migration pathways depending on their sealing capacity. This study applies a computationally efficient rapid fault leakage analysis tool that combines a vertically integrated reservoir model with an upscaled [...]
A pipeline for representing buildings as fuels in wildland urban fire spread and risk modeling
Published: 2026-07-09
Subjects: Categorical Data Analysis, Databases and Information Systems, Engineering, Geographic Information Sciences, Mechanical Engineering, Nature and Society Relations, Other Engineering, Other Environmental Sciences, Other Mechanical Engineering, Other Physical Sciences and Mathematics, Physical and Environmental Geography, Risk Analysis, Software Engineering, Spatial Science
Wildfires pose an increasing risk to structures and communities located adjacent to or among vegetative landscapes. Yet most open landscape-scale fire modeling workflows still lack a reproducible way to represent buildings as combustible fuels rather than only as exposed assets or nonburnable developed land. This paper presents FireDX, a geospatial data engine that generates standardized, [...]
Simulation-Based Sensitivity Analysis of Check-Dam Height Effects on Downstream Debris-Flow Depth for Structural Countermeasure Scenarios
Published: 2026-05-20
Subjects: Earth Sciences, Engineering, Other Engineering, Risk Analysis
Check dams can influence debris-flow propagation, but their effects may depend on location, height, and local topographic conditions. This study evaluates the sensitivity of downstream debris-flow depth to check-dam height scenarios using numerical simulations of a mountainous catchment in Atami, Japan. Six hypothetical check-dam locations were placed along the torrent, and 4,877 valid cases were [...]
Where air-conditioning is essential: Raising a yellow flag ten times - where wet bulb globe temperature under shaded outdoor shelter fails to refresh adapted healthy individuals
Published: 2026-01-09
Subjects: Other Engineering
Concerning the modern paradigm shift to insulate building envelopes with the ambition to improve winter comfort without demand for heating, unintended problems can arise in summer as insulation traps heat and humidity from cooking and occupants’ respiration. So, we should consider outdoor living areas, covered from sun and rain, but openly alfresco - such as verandas. The current work extends on [...]
Classifying Climate Benefits and Addressing Trade-offs of Timber Use in Buildings for Voluntary Carbon Markets and the EU Carbon Removal Certification Framework
Published: 2025-07-31
Subjects: Environmental Sciences, Materials Science and Engineering, Other Engineering, Planetary Sciences, Statistics and Probability
Timber use in construction is increasingly promoted as a climate mitigation option due to its potential for carbon storage and material substitution. Current classifications often conflate storage with carbon removal, risking misalignment with voluntary carbon market integrity frameworks and the EU Carbon Removal Certification Framework. This paper evaluates the scientific and methodological [...]
Experiments to Systematically Evaluate the Role of Cohesion in Channel Initiation and Evolution
Published: 2025-07-30
Subjects: Earth Sciences, Engineering, Engineering Science and Materials, Environmental Sciences, Materials Science and Engineering, Mechanical Engineering, Other Engineering, Social and Behavioral Sciences
Sediment cohesion has long been thought to exert a fundamental control on channel evolution and the wide range of channel forms observed on Earth and other planets. Here we present results from simplified laminar flume experiments to investigate how systematically increasing sediment cohesion affects erosional channel formation. Low cohesion leads to a subtle shift from highly mobile, [...]
Comprehensive quantification of production costs for large-scale kelp aquaculture and cost reduction opportunities
Published: 2025-06-12
Subjects: Agriculture, Earth Sciences, Engineering, Environmental Sciences, Life Sciences, Natural Resource Economics, Other Engineering, Physical Sciences and Mathematics
A highly realistic techno-economic analysis (TEA) was developed to assess the cost of production (COP, US $ per fresh tonne kelp) for large-scale kelp aquaculture. The TEA resolves feedbacks across structural design and response, operational requirements and decisions, site properties, and biological response. We apply the TEA to a Saccharina latissima farming operation at a 100m deep, 405 [...]
Reliability of Contrast-Based Automated Fracture Detection from Decimeter Resolution Aerial Imagery
Published: 2025-04-30
Subjects: Civil and Environmental Engineering, Civil Engineering, Earth Sciences, Engineering, Geology, Geotechnical Engineering, Other Engineering, Physical Sciences and Mathematics, Tectonics and Structure
Aerial imagery that captures outcrop exposures of rocks enables the characterization of structural discontinuities such as faults and fractures across large and difficult-to-access areas. These datasets provide an opportunity to analyze the characteristics of fault and fracture networks as analogues for the subsurface. The application of automated interpretation methods to imagery has the [...]
Cumulative exposure to urban heat can affect the learning capacity of students and penalize the vulnerable and low-income young population
Published: 2025-04-20
Subjects: Other Engineering
Background: Elevated temperatures negatively impact human well-being, heighten mental health risks, and impair cognitive function, with young populations being especially vulnerable. Prolonged exposure to rising ambient temperatures further exacerbates these effects, potentially hindering student’s cognitive performance under extreme heat conditions. Objectives: This paper systematically reviews [...]
dageo: Data Assimilation in Geosciences
Published: 2025-04-08
Subjects: Earth Sciences, Mining Engineering, Oceanography and Atmospheric Sciences and Meteorology, Other Engineering
Data Assimilation combines computer models with real-world measurements to improve estimates and forecasts of dynamical systems such as oceans, atmosphere, and subsurface reservoirs. The Python package dageo is a tool to apply data assimilation in geoscience applications. Currently, it encompasses the Ensemble Smoother with Multiple Data Assimilation (ESMDA) method and provides tools for [...]
Nanogeios Nanoliquid CO₂ – Performance Evaluation of Hybrid Nanofluid-Enhanced Liquid CO₂ for Advanced District and Data Center Cooling Applications
Published: 2025-03-22
Subjects: Chemical Engineering, Ecology and Evolutionary Biology, Engineering, Engineering Science and Materials, Mechanical Engineering, Neuroscience and Neurobiology, Other Engineering, Physical Sciences and Mathematics, Physics
This study presents a comprehensive evaluation of a novel hybrid nanofluid-enhanced liquid CO₂, engineered to address cooling challenges in water-scarce environments. Developed by NanoGEIOS, the fluid combines graphene oxide (GO) and carbon nanotubes (CNTs) in a 1:1 ratio (2 vol%) and is optimized using AI-powered NanoFusion dispersion technology. The nanofluid exhibits a 77% increase in thermal [...]
A Data-Driven Method for Improving Historical Maps' Positional Accuracy
Published: 2025-03-16
Subjects: Engineering, Geographic Information Sciences, Geography, Other Engineering
Positional accuracy improvement (PAI) of historical maps involves correcting their inherent geometric distortions, which often limit their usability in modern applications. Although resurveying an entire map provides the most accurate solution for PAI, it is costly, time-consuming, and often impossible. This study proposes a cost-effective, alternative data-driven method, using Generalized [...]
Performance and Stability Analysis of a GEIOS Proprietary Ionic Nanofluid for Medium to High-Temperature Geothermal Applications
Published: 2025-03-03
Subjects: Chemical Engineering, Engineering, Engineering Science and Materials, Environmental Sciences, Mechanical Engineering, Other Engineering, Physical Sciences and Mathematics, Physics
This study investigates the performance and stability of a proprietary ionic nanofluid developed by GEIOS Technologies for medium to high-temperature geothermal applications. The nanofluid integrates boron nitride nanoparticles, proprietary surface modifiers, and quantum-optimized additives to enhance thermal conductivity, heat transfer efficiency, and operational stability in closed-loop [...]