Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 17 of 17 for “"ground motion prediction"”.
-
A New Ground Motion Prediction Equation for Otaniemi, Espoo, South-Finland
Uusi maanliikkeen maksimiarvoja ennustava malli, ON21, ratkaistaan ST1 Deep Heat:n geolämpövoimalalle Otaniemeen, Espoon kaupunkiin, Etelä-Suomeen. Raakadataa maanjäristyksistä, jotka sattuivat 2018 stimuloinnin yhteydessä, käsitellään, instrumentin vaste poistetaan ja taajuusaluetta käytetään …
-
Regionally adaptable ground-motion Prediction Equations (GMPEs) for seismic hazard analysis
Adjustment of empirically derived ground motion prediction equations (GMPEs), from a data- rich region/site where they have been derived to a data-poor region/site, is one of the major challenges associated with the current practice of seismic hazard analysis. Due to the fre- quent use in …
-
Ground Motion Prediction Equations for Non-Spectral Parameters using the KiK-net Database
The KiK-net ground motion database is used to develop ground motion prediction equations for Arias Intensity (I<sub>a</sub>), 5-95% Significant Duration (Ds<sub>5-95</sub>), and 5-75% Significant Duration (Ds<sub>5-75</sub>). Relationships are developed both for shallow crustal earthquakes and …
-
Towards Enhanced Earthquake Resilience: Linking Early Warning Systems, Ground Motion Prediction, and Stress Field Analysis
… remain, particularly in accurately predicting ground motion and event characteristics in complex tectonic settings. To address this, we examine how fault complexity affects ground motion predictions, emphasizing that realistic fault geometries and fault-zone properties can significantly …
-
Use of Cone Penetration Testing in the Interpretation of Ground Shaking From Paleoliquefaction Evidence
… can be used to estimate the severity of the ground shaking that had to occur to cause the observed liquefaction features. The database of present-day liquefaction cases is refined to add recent data and to cull older data based on a set of criteria that allow the effect of measured fines …
-
Global Structure of the Mantle Transition Zone Discontinuities and Site Response Effects in the Atlantic and Gulf Coastal Plain
… Analysis of the residuals from the stochastic ground motion prediction method suggests that incorporating the site response effects as functions of sediment thickness may improve ground motion prediction models for the Coastal Plain region.
-
Predictive earthquake damage modeling for natural gas distribution infrastructure
… This thesis aimed to develop a damage prediction model to improve emergency response time and restoration efficiency. The machine-learning based model built upon currently used predictive algorithms, while adding features necessary to account for distribution branch lines and …
-
Effects of Site Response on the Correlation Structure of Ground Motion Residuals
… analyses require an estimate of earthquake ground motions from future events. These predictions are achieved through Ground Motion Prediction Equations, which include a prediction of the median and the standard deviation of ground motion parameters. The differences between observed and …
-
Evaluation of Site Response Analysis for Vertical Ground Motions in LS-DYNA Using Geotechnical Downhole
… Current practice for predicting vertical ground motion is to use the V/H method, which is not site specific. This method utilized measured vertical to horizontal (noise or earthquake) spectral ratios to convert ground motion prediction equation outputs to the vertical direction. The final …
-
A Predictive Modeling Approach for Assessing Seismic Soil Liquefaction Potential Using CPT Data
… mirrors the random/mixed effects models used in ground motion prediction equation development. The model is tested using an independent set of case histories from recent New Zealand earthquakes, and performance metrics are reported. </p> <p>We found that a Bayesian measurement error model …
-
Seismic Slope Stability: A Comparison Study of Empirical Predictive Methods with the Finite Element Method
… the slope is subjected to 88 different input motions, and the seismic displacements obtained from the numerical and empirical approaches are compared statistically. From correlation analyses between seven ground motion parameters and the numerical results, new empirical predictive equations …
-
Stochastic Ground Motion Models for Uncertainty Quantification in Earthquake Engineering
… inputs, specifically constructing stochastic ground motion models (GMMs) that accurately capture the characteristics and variability of recorded ground motions (GMs). Our core technique employs stochastic process modeling for a suite of recorded GM time series. This modeling accounts for two …
-
Advanced analysis of complex seismic waveforms to characterize the subsurface Earth structure
… as a critical parameter for site-specific ground motion prediction study, which is highly necessary for urban areas located in seismic active zones. SPAC analysis of microtremors provides an efficient way to estimate Vs structure. Compared with other Vs estimating methods, SPAC is …
-
Improved ground motion intensity measures for reliability-based demand analysis of structures
… interval of periods, Sa,avg (T1,…,Tn), as scalar ground motion Intensity Measure (IM) when assessing the seismic performance of inelastic structures. Since the interval of periods where computing Sa,avg is related to the more or less influence of higher vibration modes on the inelastic response, …
-
Topographic Effects in Strong Ground Motion
Ground motions from earthquakes are known to be affected by earth's surface topography. Topographic effects are a result of several physical phenomena such as the focusing or defocusing of seismic waves reflected from a topographic feature and the interference between direct and diffracted seismic …
-
Partitioning Uncertainty for Non-Ergodic Probabilistic Seismic Hazard Analyses
… accounting for the uncertainties in predicting ground motion parameters is critical for Probabilistic Seismic Hazard Analyses (PSHA). This is particularly important for critical facilities that are designed for long return period motions. Non-ergodic PSHA is a framework that allows for this …
-
Uncertainty Quantification in Earth System Models Using Polynomial Chaos Expansions
… location plays a dominant role in earthquake ground motion responses (in terms of peak ground velocities, PGVs), while elliptical patch properties only show secondary influence. In addition, Our PC based Bayesian analysis successfully identified the most `likely' fault plane configuration with …