TRENTO
Study concerning the local seismic response of the terminal stretch of the Sarca river valley near Garda Lake
The three-year research project, carried out within the framework of a Programme Agreement with the Autonomous Province of Trento, aims to estimate the local seismic response (i.e., the modification in amplitude, frequency, and duration of seismic shaking due to the specific litho-stratigraphic and morphological conditions of a site) in the area of the terminal section of the Sarca River valley, near Lake Garda.
The local seismic response is assessed using both standard methodologies—such as the Generalized Inversion Technique (GIT) applied to earthquake recordings, and the H/V spectral ratio technique applied to ambient seismic noise measurements—and advanced noise analysis methods aimed at studying the seismic response of alpine valleys, in order to better understand the implicit 2D/3D effects associated with buried valley morphologies.
These analyses are further complemented by array-based velocity measurements and a gravity survey campaign aimed at reconstructing the geometry of the buried valley and defining a 3D subsurface model.
The results obtained from the various methodologies will be compared and discussed, evaluated, and interpreted in conjunction with existing geological and geophysical data, with the goal of improving current geological models and providing the seismological information needed to support and implement sound spatial and urban planning policies.