Filtering by Subject: Engineering
Published: 2023-03-23
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering
Low-intensity but high-frequency coastal flooding, also known as nuisance flooding, can negatively affect low-lying coastal communities with potentially large socioeconomic effects. This flooding also can greatly affect post-storm coastal dune recovery and reduce the long-term resilience of the back-barrier ecosystem. Recent analytical work has hypothesized that these frequent flooding events are [...]
Published: 2023-03-23
Subjects: Engineering
The frequency and intensity of coastal flooding is expected to accelerate in low-elevation coastal areas due to sea level rise. Coastal flooding due to wave runup affects coastal ecosystems and infrastructure, however it can be difficult to monitor in remote and vulnerable areas. Here we use a camera-based system to monitor wave runup as part of the after-storm recovery of an eroded beach on the [...]
Published: 2023-03-19
Subjects: Engineering, Physical Sciences and Mathematics
Widespread distributed fracturing during earthquakes threatens infrastructure and lifelines. We combine high-resolution rupture maps from the five major surface-rupturing strike-slip earthquakes in southern California and northern Mexico since 1992 to incorporate the displacements produced by secondary ruptures into a probabilistic displacement hazard analysis framework. Through analysis of the [...]
Published: 2023-03-15
Subjects: Civil and Environmental Engineering, Civil Engineering, Engineering, Risk Analysis
Flooding is the most frequent type of natural disaster, inducing devastating damages at large and small spatial scales. Flood exposure analysis is a critical part of flood risk assessment. While most studies analyze the exposure elements separately, it is crucial to perform a multi-parameter exposure analysis and consider different types of flood zones to gain a comprehensive understanding of the [...]
Published: 2023-03-14
Subjects: Engineering
To address the problem of climate changes, CO2 sequestration by forests should be assessed. Forests store carbon in their biomass- about half of it is carbon. The trees’ diameter, height and age are relevant parameters for forests’ biomass estimation. Various methods have been utilized to estimate forests’ biomass. Initially, field measurements using tape measures, clinometers and frequently a [...]
Published: 2023-03-13
Subjects: Civil Engineering, Engineering, Other Civil and Environmental Engineering
Climatic and Terrain parameters which include the soil moisture, precipitation, evapotranspiration, maximum and minimum temperature are the most crucial factors which drives the future of earth. Soil Moisture regulates the movement of water and heat energy between the land surface and the atmosphere through evaporationn and plant transpiration. Precipitation controls the entire operation of the [...]
Published: 2023-03-10
Subjects: Engineering
Subtropical coastlines are impacted by both tropical and extratropical cyclones. While both may lead to substantial damage to coastal communities, it is difficult to determine the contribution of tropical cyclones in coastal flooding relative to that of extratropical cyclones. We conduct a large-scale flood hazard and impact assessment across the subtropical Southeast Atlantic Coast of the United [...]
Published: 2023-03-03
Subjects: Engineering, Physical Sciences and Mathematics
In the United States, citizens and policymakers heavily rely upon Environmental Protection Agency (EPA) mandated regulatory networks to monitor air pollution; increasingly they also depend on low-cost sensor networks to supplement spatial gaps in regulatory monitor networks coverage. Although these regulatory and low-cost networks in tandem provide enhanced spatiotemporal coverage in urban areas, [...]
Published: 2023-02-21
Subjects: Engineering
The dam breaching is one of the events with the most catastrophic consequences among the risks due to fluvial flooding, given the intensity, the great extension of the affectation and the speed of the event. At present, various hydraulic modeling programs are capable of simulating the breach in the wall of a dam, as well as its possible subsequent flooding, granting speeds and drafts in the [...]
Published: 2023-02-19
Subjects: Education, Engineering
Nowadays hydraulic fracturing is becoming the most popular practice for low permeability reservoirs. While in some cases fractured wells show superior productivity than non-fractured wells, in other cases the effective fracture length which is used to channel gas and oil from reservoir to wellbore, is much shorter than the propped fracture length, thus leading to a lower-than-expected production [...]
Published: 2023-02-15
Subjects: Aerospace Engineering, Civil and Environmental Engineering, Earth Sciences, Engineering, Mechanical Engineering, Physical Sciences and Mathematics
The Mw7.8 Kahramanmaraş Earthquake was larger and more destructive than what had been expected for the tectonic setting in Southeastern Turkey. By using near-field records we provide evidence for early supershear transition on the splay fault that hosted the nucleation and early propagation of the first rupture that eventually transitioned into the East Anatolian fault. We also find, for the [...]
Published: 2023-02-10
Subjects: Engineering, Physical Sciences and Mathematics
We investigate solution methods for large-scale inverse problems governed by partial differential equations (PDEs) via Bayesian inference. The Bayesian framework provides a statistical setting to infer uncertain parameters from noisy measurements. To quantify posterior uncertainty, we adopt Markov Chain Monte Carlo (MCMC) approaches for generating samples. To increase the efficiency of these [...]
Published: 2023-02-10
Subjects: Engineering
Earthen embankments are subject to increasing threads because of climate change inducing sequences of severe drought periods followed by floods possibly leading to overtopping of the structures. Consequently, the water saturation of the dike can vary significantly both in space and time, and the resulting groundwater flow can affect the free-surface flow in case of overtopping. Conversely, the [...]
Published: 2023-02-07
Subjects: Engineering, Environmental Engineering, Oceanography
This paper presents an innovative and detailed dataset of currents and sediment transport observations over a sand shoal system responsible for focusing wave energy on eroding coastline. The data are used to measure the performance of a detailed numerical sediment transport model of the sand shoal system. The predictive skill of the model is 0.96 for tidal elevations within Port Phillip Bay, 0.75 [...]
Published: 2023-02-05
Subjects: Engineering, Social and Behavioral Sciences
Significant global sustainability challenges include among others, energy, climate, and sanitation. Previous Sustainability Transition research has attempted to understand transformation complexity and interdependence, primarily through single-case methodological studies or large-scale analytical frameworks such as the Multi-Level Perspective. This leaves a knowledge gap on common dynamics [...]