artículo
Enhancement of long period components of recorded and synthetic ground motions using InSAR
Fecha
2011Registro en:
10.1016/j.soildyn.2011.01.005
1879-341X
0267-7261
WOS:000289185300008
Autor
Abell Mena, José Antonio
Llera Martin, Juan Carlos de la
Wicks, Charles W.
Institución
Resumen
Tall buildings and flexible structures require a better characterization of long period ground motion spectra than the one provided by current seismic building codes. Motivated by that, a methodology is proposed and tested to improve recorded and synthetic ground motions which are consistent with the observed co-seismic displacement field obtained from interferometric synthetic aperture radar (InSAR) analysis of image data for the Tocopilla 2007 earthquake (M-w=7.7) in Northern Chile. A methodology is proposed to correct the observed motions such that, after double integration, they are coherent with the local value of the residual displacement. Synthetic records are generated by using a stochastic finite-fault model coupled with a long period pulse to capture the long period fling effect.