Implementación de un toolbox de Matlab para el procesamiento de señales sísmicas a partir de las bases de datos del Instituto Geofísico de la Escuela Politécnica Nacional.

Abstract

: The Geophysical Institute of the National Polytechnic School (IGEPN), performs a continuous monitoring of volcanoes in real time through seismographs located in seismic stations strategically around the network of volcanoes in Ecuador. It generates databases with the recorded records and also with files in .xlsx format containing manual labeling of the seismic events detected in the recordings. These databases generated over the years contain relevant information that can help to better understand these seismic events. In order to analyze all these bases quickly and verify the correct labeling of these seismic events, a digital tool called Toolbox is implemented in the specialized software MATLAB®, the first result will be obtained in an orderly and classified manner the events extracted from the records for each station and channel detected in a volcano and their respective confirmation or discard as a seismic event. Additionally, the confirmed events will go through preprocessing functions such as trimming, filtering and normalization to finally extract from these 13 features in the time domain, 21 in the frequency domain and 50 in the scale domain, a total of 84 features proposed in the paper “ESeismic: Towards an Ecuadorian volcano seismic repository”, which are useful for machine learning and allow us to see if the events correspond to the group in which they were classified manually.