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oai:docta.ucm.es:20.500.14352/75502023-08-26T09:45:09Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Delgado, José author Rosa, Julio author Peláez, José A. author Rodríguez Peces, Martín Jesús author Garrido, Jesús author Tsige Beyene, Meaza 2023-06-17T08:55:57Z 2023-06-17T08:55:57Z 2020-09-05 0013-7952 10.1016/j.enggeo.2020.105710 https://hdl.handle.net/20.500.14352/7550 https://www.sciencedirect.com/science/article/pii/S0013795220302672 Newmark displacement estimation is generally computed using empirical models. These models are estimated from large datasets that mainly comprise moderate-to-high magnitude events (Mw > 6.0). In this work, we study the performance of several of these models to study moderate-to-low magnitude scenarios. For this purpose, data from the Betic Cordillera, S Spain, with magnitudes ranging from Mw 3.5 to 6.3, were used to compare with model predictions. The results show that errors in the estimates depend on the magnitude of events or on the yielding acceleration considered to estimate the displacement. The availability of an appropriate range of data (magnitude and yielding acceleration), when defining the regression model, may overcome the differences due to specific characteristics of the seismotectonic context of the area where data derives from. The results also show that performance of models including several ground motion predictors is better than those based on a single parameter, regardless of the combination these predictors. Furthermore, regression models with polynomial forms present a better performance than other functions based on the logarithm of these predictors. Finally, new specific models for the Betic Cordillera are proposed, especially suitable for low magnitude events (< 5.0) and low critical accelerations (< 0.1 g), based on simplified polynomial forms of models. spa On the applicability of available regression models for estimating Newmark displacements for low to moderate magnitude earthquakes. The case of the Betic Cordillera (S Spain) journal article URL https://docta.ucm.es/bitstreams/78d7b92f-a664-4860-ac93-092bb0ae8724/download File MD5 d1578d18e3340ee82c5f4cc177ba8f0c 4558643 application/pdf On the applicability of available regression models for estimating Newmark displacements for low to moderate magnitude earthquakes (1).pdf URL https://docta.ucm.es/bitstreams/c7be4244-94a1-47d6-99c5-609710f3826c/download File MD5 2360a9ce7b26fa6e36b320a4b6eefd36 2278648 application/pdf Delgado_etal_2020_EngGeo_accepted.pdf URL https://docta.ucm.es/bitstreams/14bbb78d-e936-403c-b4c6-378123113f24/download File MD5 dd29db8cf2bcda175ad7ef124a669115 67096 text/plain On the applicability of available regression models for estimating Newmark displacements for low to moderate magnitude earthquakes (1).pdf.txt URL https://docta.ucm.es/bitstreams/86633bbd-be1a-4814-8f89-2ec03c597ffc/download File MD5 b81e909cfc1290ce7590b6d2b9093b69 64986 text/plain Delgado_etal_2020_EngGeo_accepted.pdf.txt