Machine learning for volcano-seismic signals: Challenges and perspectives

M Malfante, M Dalla Mura, JP Métaxian… - IEEE Signal …, 2018 - ieeexplore.ieee.org
Environmental monitoring is a topic of increasing interest, especially concerning the matter
of natural hazards prediction. Regarding volcanic unrest, effective methodologies along with …

ESeismic: Towards an Ecuadorian volcano seismic repository

N Pérez, D Benitez, F Grijalva, R Lara-Cueva… - Journal of Volcanology …, 2020 - Elsevier
In this work, we present the development, description, and performance evaluation of two
volcano seismological datasets: one containing raw seismic signals (MicSigV1) and another …

Different ventricular fibrillation types in low-dimensional latent spaces

CP Bernal Oñate, FM Melgarejo Meseguer, EV Carrera… - Sensors, 2023 - mdpi.com
The causes of ventricular fibrillation (VF) are not yet elucidated, and it has been proposed
that different mechanisms might exist. Moreover, conventional analysis methods do not …

A real-time microearthquakes-detector based on voice activity detection and endpoint detection: An approach to Cotopaxi Volcano

R Lara, M Rodriguez, J Larco - Journal of Volcanology and Geothermal …, 2020 - Elsevier
Abstract The Ring of Fire represents a constant threat in the case of possible eruptions due
to its 160 active volcanoes. Consequently, several studies have determined that an increase …

Global volcano monitoring through the Normalized Hotspot Indices (NHI) system

F Marchese, N Genzano - Journal of the Geological Society, 2023 - lyellcollection.org
The Normalized Hotspot Indices (NHI) is a multi-channel algorithm developed to map
thermal anomalies through the Multispectral Instrument onboard the Sentinel-2 satellite and …

Waveform inversion-assisted distributed reverse time migration for microseismic location

F Li, Y Qin, WZ Song - IEEE Journal of Selected Topics in …, 2019 - ieeexplore.ieee.org
We present a novel approach to locate microseismic sources in situ and in real time in
distributed sensor networks (DSN). We propose a distributed reverse time migration (RTM) …

A-MAD: An Adaptive-Microseismic Activity Detector Based on Gaussian Mixture Models and Spectral Subtraction

K Rosero, C Parra, F Grijalva, JC Larco… - IEEE …, 2023 - ieeexplore.ieee.org
Continuous monitoring of active volcanoes is essential for understanding their behavior and
providing accurate forecasts and warnings. Automating the detection of volcano …

A semi-supervised approach for microseisms classification from Cotopaxi volcano

C Brusil, F Grijalva, R Lara-Cueva… - 2019 IEEE Latin …, 2019 - ieeexplore.ieee.org
Microseism classification is primordial to easily identify what type of event we are facing at in
a possibly dangerous situation. However, labeling events is a hard and time-consuming task …

An Interpersonal Dynamics Analysis Procedure with Accurate Voice Activity Detection Using Low-cost Recording Sensors

D Lim, H Kang, B Choi, W Hong, J Lee - IEEE Access, 2024 - ieeexplore.ieee.org
Voice data is of special interest to organizational behavior researchers since it can be easily
collected and provides a wealth of information for understanding interpersonal dynamics …

An efficient real-time voice activity detection algorithm using teager energy to energy ratio

M Hadi, MR Pakravan… - 2019 27th Iranian …, 2019 - ieeexplore.ieee.org
We define a new feature called Teager Energy to Energy and mathematically show that it
provides distinguished values for pure tone and white noise signals. We then employ the …