Some case studies of macroseismic intensity data-points recompilation in Central America: The contribution of Riesca Project to the Marca-Gehn Prototypal Database.

In the frame of the activities of RIESCA Project ("Proyecto de formación aplicada a los Escenarios de Riesgo con la vigilancia y monitoreo de los fenómenos volcánicos, sismicos e hidrogeologicos en América Central", funded by the Agenzia Italiana per la Cooperazione allo Sviluppo, and coordinated by the University of Palermo) we agreed to build up a prototypal archive of macroseismic data points for the Central America countries involved in the project, namely, El Salvador, Guatemala, Honduras and Nicaragua. The objective of this collection is to establish a common, quality controlled seismological dataset, for checking, validating, and eventually updating the earthquake parameters for some damaging and destructive events. They will be integrated into new fault/area source characterization for seismic hazard purposes as well as into site-specific characterization of metropolitan areas. With collaborative efforts, a google form for inputting the data into a repository has been realized and tested in 2017. During the 3rd training period in Central America in 2018 (http://proyectoriesca.agronomia.ues.edu.sv/), the seismological working group has uploaded about 750 intensity data-points of 23 earthquakes in the prototypal archive named MARCA-GEHN (Macroseismic Archive of Central América - Guatemala, El Salvador, Honduras, Nicaragua). At ESC General Assembly we will present the general features of the database and some interesting case studies among the earthquakes already collected.