!!!NEW PAPER ALERT!!! Estimation of Timing of Liquefaction Using Spectral Energy Ratio

February 8, 2025By adminJournal Article, Publication No Comments

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

!!!NEW PAPER ALERT!!! Southern California basin and non-basin classification algorithm for ground-motion site amplification model applications

December 11, 2024By adminJournal Article, Publication No Comments

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 Invited to Present at the QuakeCore IP1/IP2 Monthly Meeting

August 13, 2024By adminPresentation No Comments

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

!!!NEW PAPER ALERT!!! Usability of Community Seismic Network recordings for ground-motion modeling

August 9, 2024By adminJournal Article, Publication No Comments

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