This is the result of research endeavors with my Postdoc Kil-Wan Ko and our collaborator Prof. Robert Kayen. In this work, we introduced a new method to identify the timing of liquefaction triggering using acceleration records by leveraging a new concept, the Spectral Energy Ratio (SER). The method was validated through centrifuge test data in … Read More
This work investigates the means used to characterize site conditions for seismic ground motion hazard modeling, analysis, and assessment. We embark on the path to quantitatively assign basin categories using machine learning algorithms test discover two length scales work well for Southern California. We discover that with just the use of surface texture as a … Read More
Prof. Nweke was invited to present on recent research investigations centered on “Quantifying the Causal Effect Between Seismic Site Response and Local-to-REgional Site Conditions: Sedimentary Basin Amplification and Relational Ground Motion Database”. The presentation was an invited speaking engagement for the New Zealand Centre for Earthquake Resilience (QuakeCoRE). QuakeCoRE aims to establish and link multi-institutional … Read More
In this paper we evaluate effective noise thresholds of CSN data based on the currently available recordings, to validate the recordings against those from higher-resolution sensors, and to make the data that is judged to be reliable available in a Ground-Motion Database used for ground-motion modeling projects The paper can be found at the following … Read More