Preprints
Filtering by Subject: Engineering
Linking thermal and rate behavior with fabric and mineralogy of clayey shear zones: Experimental investigation on the El Forn landslide (Andorra)
Published: 2022-12-16
Subjects: Civil and Environmental Engineering, Engineering, Geotechnical Engineering
Thermal triaxial tests were carried out on remolded material of core samples of the shear zone of a deep-seated landslide, the El Forn landslide (Andorra). With the thermal triaxial tests, we have obtained thermal and rate sensitivi- ties of the material outside and inside the shear band. Moreover, micro-scale tests were carried out, such as XRPD, SEM-EDS, MicroCT, and plasticity index. The [...]
A treatise on InSAR geometry and 3D displacement estimation
Published: 2022-12-14
Subjects: Engineering, Physical Sciences and Mathematics
The estimation of displacement vectors for (objects on) the Earth’s surface using satellite InSAR requires geometric transformations of the observables based on orbital viewing geometries. Usually, there are insufficient viewing geometries available for full 3D reconstruction, leading to non-unique solutions. Currently, there is no standardized approach to deal with this problem, resulting in [...]
A Web-based Analytical Urban Flood Damage and Loss Estimation Framework
Published: 2022-12-04
Subjects: Civil and Environmental Engineering, Civil Engineering, Engineering, Risk Analysis, Systems and Communications
Information and communication technology serves a crucial role in communicating flood risk and consequences to a broad range of stakeholders and facilitating mitigation decisions. While studies extensively utilize flood inundation maps for communicating flood risks, there is a need to integrate a broad spectrum of physical vulnerability parameters into risk estimates at various spatial scales. [...]
Benchmarking a two-way coupled coastal wave-current hydrodynamics model
Published: 2022-12-02
Subjects: Engineering
Wave-current interaction phenomena are often represented through coupled model frameworks in ocean modelling. However, the benchmarking of these models is scarce, revealing a substantial research challenge. We seek to address this through a selection of benchmark cases for coupled wave-current interaction modelling frameworks. This comprises a series of analytical and experimental test cases [...]
SWAT model-based quantification of the impact of land use change on sediment yield in the Fincha watershed, Ethiopia
Published: 2022-12-01
Subjects: Engineering, Physical Sciences and Mathematics
In recent years, Ethiopia is facing problems due to soil erosion, mainly because of the conversion of natural vegetation cover into cultivated land. Soil erosion is also affecting dam reservoirs, which are threatened by an increase in sediment yield entering the lake. The present study focuses on the Ethiopian Fincha watershed and takes advantage of the potentiality of SWAT, to investigate how [...]
Laboratory validation of a new hydro-mechanical energy-based brittleness index model for hydraulic fracturing
Published: 2022-12-01
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering, Engineering Science and Materials, Mining Engineering, Oil, Gas, and Energy, Petroleum Engineering
Brittleness Index (BI) is a critical parameter characterising the deformation regime of geo-materials, covering the range from purely brittle (fractures) to ductile (plastic flow). A variety of BI models have been developed based on rock properties such as mineralogy, elastic parameters, or stress-strain data. However, very few of them are based on the deformation induced by hydro-mechanical [...]
A Stacked Machine Learning Algorithm for Multi-Step Ahead Prediction of Soil Moisture
Published: 2022-11-22
Subjects: Engineering
A trustworthy assessment of soil moisture content plays a significant role in irrigation planning and in controlling various natural disasters such as floods, landslides, and droughts. Various Machine Learning Models (MLMs) have been used to increase the accuracy of soil moisture content prediction. The present investigation aims to apply MLMs with novel structures for the estimation of daily [...]
The future of coastal monitoring through satellite remote sensing
Published: 2022-11-16
Subjects: Engineering, Physical Sciences and Mathematics
Satellite remote sensing is transforming coastal science from a ‘data-poor’ field into a ‘data-rich’ field. Sandy beaches are dynamic landscapes that change in response to long-term pressures, short-term pulses, and anthropogenic interventions. Until recently, the rate and breadth of beach change has outpaced our ability to monitor those changes, due to the spatiotemporal limitations of our [...]
Bayesian analysis of ground motion models using chimney fragility curves: 2021, 5.9-Mw Woods Point intraplate earthquake, Victoria, Australia
Published: 2022-11-15
Subjects: Earth Sciences, Engineering, Physical Sciences and Mathematics, Probability, Statistics and Probability
The 22 September 2021 (AEST) Mw 5.9 Woods Point earthquake occurred in an intraplate setting (southeast Australia) approximately 130 km East Northeast of the central business district of Melbourne (pop. ∼5.15 million). A lack of seismic instrumentation and a low population density in the epicentral region resulted in a dearth of near-source instrumental and “felt” report intensity data, limiting [...]
Gaia: Complex Systems Prediction for Time to Adapt to Climate Shocks
Published: 2022-11-08
Subjects: Engineering, Life Sciences, Physical Sciences and Mathematics
A proposal, called “Gaia”, that life regulates Earth’s climate to its advantage, is partially supported by Earth’s climate history, wherein temperature fluctuations over the past ca. half billion years have mostly been small enough to protect life from extremes of climatic fluctuations, while global temperatures overall cooled during the 3.8 Ga when life was present, in spite of increased solar [...]
CO2 transport and storage feasibility and cost study for ASEAN
Published: 2022-11-08
Subjects: Engineering, Physical Sciences and Mathematics
Carbon Capture and Storage (CCS) technology is expected to a play a significant role in reducing CO2 emissions globally. The first steps for successful deployment include identifying CO2 storage potential, determining CO2 injection rates, evaluating of CO2 transport options, estimating associated costs, and facilitating policy and regulatory frameworks. To evaluate the CCS feasibility in [...]
A Stacked Machine Learning Algorithm for Multi-Step Ahead Prediction of Soil Moisture
Published: 2022-11-06
Subjects: Engineering
A trustworthy assessment of soil moisture content plays a significant role in irrigation planning and in controlling various natural disasters such as floods, landslides, and droughts. Various Machine Learning Models (MLMs) have been used to increase the accuracy of soil moisture content prediction. The present investigation aims to apply MLMs with novel structures for the estimation of daily [...]
Dynamic Mode Decomposition for Analyzing Dynamics in Multi-phase Flow in Porous Media
Published: 2022-11-05
Subjects: Engineering, Physical Sciences and Mathematics
For multi-phase flow through multi-scale heterogeneous porous media, such as the pore space of rocks, the interaction between multiple immiscible fluids and an intricate network of pores, creates a wide range of dynamic flow phenomena. At larger scales i.e. scales relevant for practical applications such as carbon sequestration, this interplay of dynamic phenomena is often referred to as [...]
Carbon dioxide storage resource use trajectories consistent with US climate change mitigation scenarios
Published: 2022-11-04
Subjects: Engineering
To progress decarbonisation in the United States, numerous techno-economic models have been built projecting climate change mitigation scenarios that include CO2 storage deployment at annual injection rates of 0.3 – 1.7 Gt yr-1 by 2050. However, these projections do not include geological, technical, or socio-economic factors that could impede the growth of geological storage resource use. Here, [...]
Seasonal biodegradation of the artificial sweetener acesulfame enhances its use as a transient wastewater tracer
Published: 2022-10-22
Subjects: Engineering
The persistence of the artificial sweetener acesulfame potassium (ACE) in wastewater treatment and subsequently in the aquatic environment has made it a widely used marker of wastewater in both surface water and groundwater. However, the recently observed biodegradation of ACE during wastewater treatment has questioned the validity of this application. In this study, we assessed the use of ACE [...]