SINTETIC SEISMIC signals by GNENERATIVE ADVERSARIAL NETWORK WITH GATED CONVOLUTIONAL NEURAL NETWORK STRUCTURE
Thesis in external company
Reference persons GIUSEPPE CARLO MARANO
External reference persons Prof. Giansalvo Cirrincone
Thesis type RESEARCH THESIS
Description The seismic analysis of buildings and structures to define the risk is an important objective problem that however requires in many types of analysis the use of seismic signals (time histories in the three directions) characterizing a given site. Given the relative scarcity of recordings of real seismic signals characterizing a given area, and in particular of seismic signals of considerable intensity (Magnitude greater than 5), it is necessary to resort to the generation of synthetic seismic signals.
Compared to the classic methods often used, which scale the intensity of real signals with respect to the required intensities, while in this thesis we intend to address and solve this problem using a Generative Adversarial Network (GAN) model for the synthesis of seismic signals of assigned characteristics. The GAN technique already shows its powerful ability to generate quality synthetic samples in multiple domains. In this thesis it is proposed to develop a GAN model with CNN capable of capturing seismic time series in an excellent way. It is proposed to use a GAN approach both on the seismic signal as it is (time series) and on its spectrogram obtained with different approaches to test its effectiveness.
Required skills neural network, time series analysis
Notes the thesis is multidisciplinary exploiting the potential of NNs (in particular GANs) to generate artificial seismic signals - possible stage at the INGV at Milano
Deadline 31/01/2023 PROPONI LA TUA CANDIDATURA