Preprints

Filtering by Subject: Engineering

Landslide Regime Shift Detector (LRSD) for Landslide Early Warning Systems

Lorenzo Nava, Antoinette Tordesillas, Guoqi Qian, et al.

Published: 2024-02-18
Subjects: Engineering

This research presents the development of a Landslide Regime Shift Detector (LRSD) which integrates advanced prediction models to provide insights into regime shifts within substantial landslide bodies. Our primary focus lies in the identification of these shifts, emphasizing that LRSD does not merely detect accelerations but discerns exceptional accelerations, defined in our context as [...]

A hydromechanical EFG-based Model for Numerical Simulation of Land Subsidence Induced by Groundwater Extraction in Anisotropic Aquifers

Ahmad Tourei, Ali Pak, Mohammadali Iranmanesh, et al.

Published: 2024-02-17
Subjects: Engineering

This study presents a coupled hydromechanical element-free Galerkin (EFG) model to simulate land subsidence induced by groundwater withdrawal. The EFG algorithm was validated with unsaturated hydraulic and hydromechanical benchmark problems, showing satisfactory alignment with finite element method (FEM) and theoretical results. We inves-tigated the effects of groundwater pumping on land [...]

A numerical investigation on the suspended sediment dynamics and sediment budget in the Mekong Delta

Vo Quoc Thanh, Dano Roelvink, Mick van der Wegen, et al.

Published: 2024-02-17
Subjects: Engineering

Fluvial sediment supply towards the coast has been the subject of extensive research. Important aspects relate to the impact of sediment retaining hydropower dams, potential delta progradation, coastal sediment supply and delta vulnerability to sea level rise. Once validated, process-based models provide a valuable tool to address these aspects and offer detailed information on sediment pathways, [...]

Towards an Open and Integrated Cyberinfrastructure for River Morphology Research in the Big Data Era

Venkatesh Merwade, Ibrahim Demir, Marian Muste, et al.

Published: 2024-02-16
Subjects: Computer and Systems Architecture, Computer Engineering, Computer Sciences, Databases and Information Systems, Engineering, Environmental Education, Environmental Engineering, Geomorphology, Hydrology, Systems and Communications, Water Resource Management

The objective of this paper is to present the initial illustration of a cyberinfrastructure named the River MORPhology Information System (RIMORPHIS) that addresses the current limitations related to river morphology data and tools. A new specification for data and semantics on river morphology datasets has been developed to support the web-based platform for discovering and visualization of [...]

Exponentially cascaded cross-sectional volume estimates from elevation data

Bastian Van den Bout, Vera Glas

Published: 2024-02-13
Subjects: Civil and Environmental Engineering, Engineering

The relationship between discharges and flow heights is a critical component of hydraulic modelling, often carried out involving data on the elevation profiles of the river bed. However, obtaining and using cross-sectional profile data can be resource intensive. Methods for profile estimation from rasterized elevation and bathymetry can help overcome this. In this paper, an efficient algorithm [...]

Mechanisms and seismological signatures of rupture complexity induced by fault damage zones in fully-dynamic earthquake cycle models

Joseph Flores-Cuba, Elif Oral, Benjamin Idini, et al.

Published: 2024-02-10
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering, Physical Sciences and Mathematics

Damage zones are common around faults, but their effects on earthquake mechanics are still incompletely understood. Here, we investigate how damage affects rupture patterns, source time functions and ground motions in 2D fully-dynamic cycle models. We find that back-propagating rupture fronts emerge in large faults and can be triggered by residual stresses left by previous ruptures or by [...]

Study on Serpentinites and the Consequence of the Misuse of Natural Stone in Buildings for Construction.

Dolores Pereira, Jose Antonio Blanco, Mercedes Peinado

Published: 2024-02-05
Subjects: Engineering

Some rocks are very attractive as ornamental stone, but not all of them accomplish the needed requirements to be used in construction. Serpentinite can be an appealing rock, very commonly used as dimension stone. However, not all serpentinites can be used in such a way. The most widely used commercial serpentinite comes from Pakistan and India (i.e., Rajasthan Green), but other countries also [...]

THE IMPORTANCE OF PRESERVING SMALL HERITAGE SITES. THE CASE OF LA TUIZA SANCTUARY (ZAMORA, SPAIN).

Rafael Navarro, Serafín Monterrubio, Dolores Pereira

Published: 2024-01-30
Subjects: Engineering

Granite has been one of the most used natural stones to build heritage for centuries. This is obviously the case when granite is the main regional rock, like the case in the north of the Iberian Peninsula. The sanctuary of La Tuiza in Lubian (Zamora, northwest of Spain) was built with the granite of Calabor. This sanctuary dates from the 18th century, and was declared as Cultural Interest [...]

Gender diversity in editorial boards of scientific journals. Some earth science case studies for a geoethical reflection.

Dolores Pereira

Published: 2024-01-30
Subjects: Engineering

Any scientific area can benefit from the contributions of a diverse society. Upon reflection, many notable achievements have been made by women to the advancement of science, but they were not highlighted enough. Such was the case of Hedy Lamarr, who co-authored the development of a radio guidance system (the start of the present Wi-Fi) or Rosalind Franklin, who contributed enormously to the [...]

Evaluating a conceptual hydrological model at gauged and ungauged basins using machine learning-based limits-of-acceptability and hydrological signatures

Abhinav Gupta, Mohamed Hantush, Rao Govindaraju

Published: 2024-01-30
Subjects: Engineering

Hydrological models are evaluated by comparisons with observed hydrological quantities such as streamflow. A model evaluation procedure should account for dominantly epistemic errors in measured hydrological data such as observed precipitation and streamflow and avoid type-2 errors (rejecting a good model). This study uses quantile random forest (QRF) to develop limits-of-acceptability (LoA) over [...]

Effect of UV radiation on chromatic parameters in serpentinites used as dimension stones.

Rafael Navarro, Lidia Catarino, Dolores Pereira, et al.

Published: 2024-01-29
Subjects: Engineering

Colour is an important parameter that must be taken into account if aesthetic homogeneity in both construction and restoration work is to be achieved. In serpentinites, the different degrees of serpentinization or carbonation can influence their final colour. Sunlight, especially ultraviolet (UV) radiation, is a common agent that can decay properties such as hue, lightness, and chroma, and can [...]

Flow dynamics and tributary mouth bar formation at river confluences with high rates of tributary sediment supply

Gelare Moradi, Colin Rennie, Romain Cardot, et al.

Published: 2024-01-29
Subjects: Engineering, Life Sciences

River confluences influence the formation of secondary circulation, bed morphology, and associated feedbacks. With distance downstream through a drainage network, it becomes likely that the flow momentum of tributaries is lower than that of the main river, creating confluences with very low momentum ratio. However, the tributary may be able to supply significant quantities of sediment, especially [...]

Femtosecond laser texturing as a tool to increase the hydrophobicity of ornamental stone: The influence of lithology and texture

Ana J. López, Santiago Pozo, Alicia Moreno, et al.

Published: 2024-01-29
Subjects: Engineering, Physical Sciences and Mathematics

In the field of stone conservation, a very common direct intervention seeks to increase the water repellence of objects. By limiting the interaction between the solid and the water, the possibility of alteration due to the action of the water (liquid or solid) as well as that related to the colonisation of surfaces by organisms is reduced. To decrease wettability, chemicals are often applied to [...]

Decoding the Hysteretic Behavior of Hydraulic Variables in Lowland Rivers with Multivariate Monitoring Approaches

Marian Muste, Kyeongdong Kim, Dongsu Kim, et al.

Published: 2024-01-29
Subjects: Engineering

This paper demonstrates that the multivariate monitoring methods are capable to underpin the systematic investigation of the hysteretic behavior occurring during gradually-varied flows. For this purpose, we present simultaneous measurements of stage, index velocity, and free-surface slope acquired continuously with high-frequency sampling instruments deployed at several river gauging sites [...]

WEATHERING OF SERPENTINITE STONE DUE TO IN SITU GENERATION OF CALCIUM AND MAGNESIUM SULFATES

Rafael Navarro, Dolores Pereira, Elena Fernández de Arévalo, et al.

Published: 2024-01-25
Subjects: Engineering

This paper presents a thorough study of the main features and the decay causes and mechanisms of serpentinites both freshly quarried and after centuries exposure at the main façade of the sixteenth century Royal Chancery (Granada, Spain). In particular, the process of in situ formation of calcium and magnesium sulfates has been studied. Several decay factors are identified, all of them acting [...]

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