Browsing by Author "Armijos Sarango, Alvaro Eduardo"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Evaluación y comparación de algoritmos para la detección automática de eventos sísmicos
    (2021) Armijos Sarango, Alvaro Eduardo; González Martínez, Santiago Renán; Palacios Serrano, Iván Santiago
    Early seismic events detection might reduce the number of people affected and save lives. In particular, the seismic activity in Ecuador is high, given its location along the zone named the Pacific Belt of Fire. In this context, this paper presents a solution to compare algorithms for detecting seismic events. This comparison was performed both concerning the functionality and the configuration of the parameters required for each algorithm. This solution was implemented on an SBC platform (Single Board Computer) to obtain a portable, scalable, economical, and low-cost computational tool. The methods compared were: Classic STA/LTA, Recursive STA/LTA, Delayed STA/LTA, Z Detector, Baer and Kradolfer picker, and AR-AIC (Autoregressive-Akaike-Information-Criterion-picker). For the evaluation and comparison, multiple experiments were carried out using real data provided by the Regional Seismological Network (RSA). In particular, such registers were used as input data to the seismic algorithms. Results revealed that the algorithm with the best performance was the Classic STA/LTA, since from the total number of real events (58), only one was not detected. In addition, 6 false negatives were obtained, achieving 98,2% of precision. Finally, the software used for the comparison of the algorithms has been released for free usage, which represents another contribution of this work in the context of seismic analysis.
  • Thumbnail Image
    Item
    Evaluación y comparación de algoritmos para la detección automática de ondas sísmicas
    (Universidad de Cuenca, 2021-11-05) Armijos Sarango, Alvaro Eduardo; González Martínez, Santiago Renán
    particular, the seismic activity in Ecuador is high, given that it is located along the zone named the Pacific Belt of Fire. Following this purpose, this work presents a solution in order to compare algorithms for detecting seismic events. This comparison was performed both in relation to the functionality and the configuration of the parameters required for each algorithm. This solution was implemented on an SBC platform (Single Board Computer) for the purpose of obtaining a portable, economical and low-cost computational tool. The methods compared were: Classic STA/LTA, Recursive STA/LTA, Delayed STA/LTA, Z-detector, Baer-and Kradolfer-picker and AR-AIC (Autoregressive-Akaike-Information- Criterion-picker). For the evaluation and comparison, multiple experiments were carried out using real data provided by the Regional Seismological Network (RSA, Red Sísmica del Austro). In particular, such registers were used as the input source to the seismic algorithms. Results reveal, the algorithm with the best performance was the Classic STA/LTA, since of the total number of real events (58), only one event was not detected. In addition, 6 false events were obtained, achieving 90% of effectiveness. Finally, for the real-time implementation, the Classic STA / LTA algorithm is used on an SBC (Single Board Computer) platform. The software developed for algorithm comparison and real-time detection has been released for free usage which represents another contribution of this work in the context of seismic analysis.