A combined approach using b-value and ionospheric GPS-TEC for large earthquake precursor detection: a case study for the Colima earthquake of 7.7 Mw, Mexico

Nayak, Karan; Romero-Andrade, Rosendo; Sharma, Gopal; Zavala, Juan Luis Cabanillas; Urias, Charbeth López; Trejo Soto, Manuel E.; Aggarwal, S. P.

doi:10.1007/s40328-023-00430-x

Cited by 19 publications

(3 citation statements)

References 100 publications

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“…Los Sistemas de Navegación Global por Satélite (GNSS) han tenido un gran auge a nivel mundial debido a la precisión, cobertura global y diversas aplicaciones como deformación de la corteza (Dumka et al, 2022;Garate et al, 2015; García-Armenteros, 2023; Hernández-Andrade et al, 2022), análisis ionosférico como precursor sísmico (Nayak et al, 2023c(Nayak et al, , 2023b(Nayak et al, , 2023aSharma et al, 2023Sharma et al, , 2020, monitoreo de estructuras (Yigit and Gurlek, 2017), siendo ejemplo de algunos estudios realizados con los receptores geodésicos.…”

Section: Introductionunclassified

Análisis Comparativo del Posicionamiento Preciso Utilizando el Receptor de Bajo Costo GNSS ZED-F9P en Conjunto con la Antena BEITIAN300 y Diferentes Modelos de Antena de Orden Geodésico

Santiago-Sánchez,

Romero-Andrade,

Trejo-Soto

et al. 2024

ESJ

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Con el avance de la Geodesia y la mejora de las especificaciones técnicas de los receptores de bajo costo, los GNSS abren nuevas alternativas para investigar las capacidades técnicas y rendimiento real que proveen este tipo de receptores para diferentes propósitos geodésicos. En este contexto, la precisión alcanzable fue analizada usando el receptor de bajo costo GNSS ZED-F9P en conjunto con dos antenas de orden geodésico (ASH701975.01B y LEIAS10 NONE) y una antena de bajo costo (BEIBT300 NONE). Las observaciones GNSS fueron llevadas a cabo en un periodo de dos días para cada modelo de antena. El análisis fue realizado en tiempos de observación de 12, 6 y 1 h, respectivamente. Estas observaciones fueron procesadas usando el método relativo estático mediante la inclusión de una estación de referencia continua del Instituto Nacional de Estadística y Geografía, la cual está localizada a una distancia aproximada de 4 km. Los resultados demuestran que la mayor precisión es lograda en un periodo de 12 h, con diferencias mínimas de 3 cm para la componente Norte y 33 cm para la vertical. En este sentido, la solución menos precisa es obtenida en el periodo de 1 h resultando diferencias de 70 cm, 46 cm y 2.3 m para la componente Norte, Este y vertical respectivamente. With advancements in geodesy and enhancements in the technical specifications of low-cost receivers, GNSS opens up new avenues for investigating the capabilities and performance provided by these receivers for various geodetic purposes. In this context, the precision achievable using the low-cost GNSS receiver ZED-F9P in conjunction with two geodetic antennas (ASH701975.01B and LEIAS10 NONE) and a low-cost antenna (BEIBT300 NONE) was analyzed. GNSS observations were conducted over a 2-day period for each antenna model. The analysis involved observation durations of 12, 6, and 1 h. These observations were processed using the static relative method alongside a continuously operating GNSS station from the Active National Geodetic Network of the National Institute of Statistics and Geography, situated at ~4 km. The results demonstrate that the highest precision was achieved over a 12 h period, with minimal differences of 3 cm for the North component and 33 cm for the vertical component. Conversely, the least accurate solution was obtained within a 1 h observation period, resulting in differences of up to 70 cm, 46 cm, and 2.3 m for the North, East, and vertical components, respectively.

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Section: Introductionunclassified

Análisis Comparativo del Posicionamiento Preciso Utilizando el Receptor de Bajo Costo GNSS ZED-F9P en Conjunto con la Antena BEITIAN300 y Diferentes Modelos de Antena de Orden Geodésico

Santiago-Sánchez,

Romero-Andrade,

Trejo-Soto

et al. 2024

ESJ

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“…Such TEC anomalies have been interpreted as seismic variations acting in the form of emanation of energy from the lithosphere to the ionosphere [26]. TEC measurements were combined with crustal stress (the b-value) in the case of the M w 7.7 Colima EQ of 19 September 2022; [27] found that the regions with lower TEC values and b-values are subject to an elevated probability of significant EQs.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Pre-Seismic Ionospheric Disturbances Prior to 2020 Croatian Earthquakes

Boudjada,

Biagi,

Eichelberger

et al. 2024

Remote Sensing

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We study the sub-ionospheric VLF transmitter signals recorded by the Austrian Graz station in the year 2020. Those radio signals are known to propagate in the Earth-ionosphere waveguide between the ground and lower ionosphere. The Austrian Graz facility (geographic coordinates: 15.46°E, 47.03°N) can receive such sub-ionospheric transmitter signals, particularly those propagating above earthquake (EQ) regions in the southern part of Europe. We consider in this work the transmitter amplitude variations recorded a few weeks before the occurrence of two EQs in Croatia at a distance less than 200 km from Graz VLF facility. The selected EQs happened on 22 March 2020 and 29 December 2020, with magnitudes of Mw5.4 and Mw6.4, respectively, epicenters localized close to Zagreb (16.02°E, 45.87°N; 16.21°E, 45.42°N), and with focuses of depth smaller than 10 km. In our study we emphasize the anomaly fluctuations before/after the sunrise times, sunset times, and the cross-correlation of transmitter signals. We attempt to evaluate and to estimate the latitudinal and the longitudinal expansions of the ionospheric disturbances related to the seismic preparation areas.

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“…It is key in the coupling processes between the E-region and F-region. Previous studies have identified earthquake-related ionospheric signatures at low latitudes [35][36][37][38]. However, comprehensive investigations into the E-F coupling processes, combining ground-and space-based measurements, remain scarce and require more attention.…”

Section: Introductionmentioning

confidence: 99%

The Turkey Earthquake Induced Equatorial Ionospheric Current Disturbances on 6 February 2023

Zhang,

Wang,

Xia

et al. 2024

Remote Sensing

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An earthquake is a seismic event resulting from a sudden release of energy in the lithosphere, which produces waves that can propagate through the atmosphere into the ionosphere, causing ionospheric disturbances, and excites an additional electric field in the lower ionosphere. Two large-scale traveling ionospheric disturbances (LSTIDs) at daytime Turkey longitudes were found, with phase speeds of 534 and 305 m/s, respectively, after the second strong earthquake at 10:24 UT on 6 February 2023. During strong earthquakes, the equatorial ionospheric currents including the E-region equatorial electrojet (EEJ) and F-region ionospheric radial current (IRC) might be perturbed. At the Tatuoca station in Brazil, we observed a stronger-than-usual horizontal magnetic field associated with the EEJ, with a magnitude of ~100 nT. EEJ perturbations are mainly controlled by neutral winds, especially zonal winds. In the equatorial F-region, a wave perturbation of the IRC was caused by a balance of the electric field generated by the zonal winds at ~15° MLat, the F-region local winds driven by atmospheric resonance, and the additional polarization electric field. Our findings better the understanding of the complex interplay between seismic events and ionospheric current disturbances.

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A combined approach using b-value and ionospheric GPS-TEC for large earthquake precursor detection: a case study for the Colima earthquake of 7.7 Mw, Mexico

Cited by 19 publications

References 100 publications

Análisis Comparativo del Posicionamiento Preciso Utilizando el Receptor de Bajo Costo GNSS ZED-F9P en Conjunto con la Antena BEITIAN300 y Diferentes Modelos de Antena de Orden Geodésico

Análisis Comparativo del Posicionamiento Preciso Utilizando el Receptor de Bajo Costo GNSS ZED-F9P en Conjunto con la Antena BEITIAN300 y Diferentes Modelos de Antena de Orden Geodésico

Analysis of Pre-Seismic Ionospheric Disturbances Prior to 2020 Croatian Earthquakes

The Turkey Earthquake Induced Equatorial Ionospheric Current Disturbances on 6 February 2023

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