GEOSIS: dall’Earthquake Report al webGIS

Abstract

Experience using ESRI Geodatabase allowed to centralize in one place the many spatial, geological and seismological data contained in the databases produced in recent years by INGV and other institutions. Inspired by the USGS reports made to characterize the most important earthquakes, it was thought to create synthesis and quick reference tools of this information in relation to a seismic event that occurred on Italian territory. The result is the idea of "framing" the location of an earthquake not only in its territorial context, but extending it to other useful information derived from INGV databases and studies. The aim of GEOSIS Earthquake Report is precisely to frame a seismic event in 5 topics into a A3 cartography report: territorial framework, seismic classification, seismic hazards, historical seismicity, recent seismic activity. The utility of Earthquake Report has been highlighted especially during a seismic emergency as a tool for quick summary and easy to read of the different seismological and seismotectonic characteristics of the area affected by the earthquake. Just at those situations, however, has been pointed out the weak point of this report: their static nature. In fact it is coming out of the need to have an application that could dynamically be updated during a seismic sequence and which provides the user the ability to create custom scenarios. It was then developed GEOSIS web, the evolution of GEOSIS Earthquake Reports on the Web. GEOSIS web turns the cartography report into a webGIS application that allows users to create the 5 default views, or create different scenarios with the layers of geographic database. In addition GEOSIS web is not centered on a single seismic event but it has the opportunity to manage the last 20 events recorded by the National Seismic Network with magnitude (ML) greater than or equal to 2.0, updated in near real time.