Review of Hybrid Methods for the Characterization of Seismic Hazard in Central America

Abstract

This study compares methods that address two key aspects: how to quantify geological information and transfer it to recurrence models, and how to distribute the seismic potential between two types of sources. These methods are as follows: 1) the mom-rate method, 2) the mom-slip method, 3) the Hybrid Method Proposed (MHP), and 4) the method to build hazard models including earthquake ruptures involving several faults named Seismic hazard and earthquake rate in fault systems (SHERIFS). The results show that the peak ground acceleration (PGA) values increase significantly in the vicinity of the faults, when these are modeled as independent sources in the hybrid methods, reaching, in some cases, to be multiplied by a factor of 2.

Keywords

• hybrid methods
• seismic hazard
• Central America