Diseño de un sistema de alerta temprana y monitoreo de movimientos sísmicos empleando tecnologías satelitales.

Abstract

An early warning and monitoring system for seismic movements was designed using existing satellite technologies in Ecuador. The connection to the continuous monitoring stations was made through the Network Transport RTCM Internet Protocol (NTRIP). Three continuous monitoring stations (EMC) located in Riobamba, Latacunga, and Pedernales were used, which served as base stations to issue error correction files in realtime, obtaining three proposed scenarios: post-process, where the positioning was analyzed during an earthquake day, using Price Point Positioning (PPP) technology with its correction files. The two remaining scenarios were analyzed in real-time with and without connection to the Military Geographical Institute (IGM) casters and the International GNSS System (IGS). For the analysis of the graphs regarding the monitoring by each station, the RTKLIB software was used, with its real-time application RTKNAVI, where the position of a GNSS receiver was observed, improving its positioning with PPP, correcting in centimeters measurement at meter level with conventional satellite technologies. It is concluded that, by using the files and connections applied between the rover, base station, and IGS, the positioning of the GNSS receiver through PPP was improved, reducing the errors occurred by the ionosphere, troposphere, oceanic loads, and others. It is recommended to apply the connection to an Early Warning System (EWS) so that, through the link between the alert and monitoring, a behavior other than usual is detected in several monitoring stations. A seismic movement is detected with time to prevent losses of humans.