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A Comparison of Predicted and Observed Ground Motions and Additional Parameters for the 7 January 2020 Indios, Puerto Rico Earthquake

On January 7, 2020 a Mw6.4 earthquake occurred on an oblique strike-slip fault, approximately 8km from Indios, Puerto Rico. To date this is the largest earthquake in a sequence of events that began on December 28^thand continues through the submission of this abstract. The Mw6.4 was recorded by many strong motion stations at distances from 19 km to more than 500 kms. The available strong motion data will be processed, reviewed and the recorded motions will be compared to predicted ground motions based on the Next Generation Attenuation Relationships-West 2 (NGA-West2) by Abrahamson et al. (2014), Boore et al. (2014), Campbell and Bozorgnia (2014) and Chiou and Youngs (2014). Additional comparisons between measured Arias Intensity and the 2016 GMPE for Arias Intensity by Abrahamson et al. (2016) will be made. and compare ground motion intensity parameters, D_5-75, D_5-95, Arias Intensity and Cumulative Absolute Velocity based on Bommer et al. (2009), Kempton and Stewart (2006) and Abrahamson and Silva (1996). Lastly, we will rotate the available recorded motions to Fault Normal and Fault Parallel and summarize our findings.

Presenting Author: Jennie Watson-Lamprey

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