A New Online Intensity Data Point Database for Portugal

Abstract

Online macroseismic intensity databases are becoming common tools in the framework activities related to seismic hazard assessment as they can offer a consistent information background. In Europe, institutions such as INGV (IT), ETH (CH) and Sisfrance (FR) have well-established Macroseismic Intensity Databases. In the framework of the EC projects NERIES (2006-2010) and SHARE (2009-2012), the European "Archive of Historical EArthquake Data" AHEAD was established. Other European institutions are now in the process of creating their own intensity databases following such a proposed common standard. Portugal is among those countries working on a macroseismic intensity database, as at present an updated general compilation of the mainland Portugal macroseismicity is still unavailable. The IM, has among its short term objectives to compile a macroseismic database and to give free access to it on the web. To manage it, the MIDOP software, created and developed by the Italian INGV has been selected. It allows easy access to earthquake listing and visualization of geographical distribution of intensity data points through a web page without the need of installing a complex infrastructure. MIDOP underlying structure strictly follows the standard proposed by AHEAD and with its adoption the collected data will be compatible with other national databases. The status of the project is here presented.