Crustal deformation measurements by global positioning system (GPS) along NSL, western India

Dumka, Rakesh K.; SuriBabu, D.; Kotlia, Bahadur Singh; Kothyari, Girish Ch; Prajapati, Sandip

doi:10.1016/j.geog.2021.05.004

Cited by 17 publications

(7 citation statements)

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“…Furthermore, the results of (Dumka et al, 2019; Gahalaut et al, 2019) were jointly analysed with the results of present study. The methodology of GPS data processing in the present study is similar to the studies (Banerjee et al, 2008; Dumka et al, 2019; Dumka, Kotlia, Kothyari, et al, 2018; Dumka, Suribabu, Kotlia, et al, 2022; Dumka, Suribabu, Narain, et al, 2022; Jade et al, 2014, 2017; John et al, 2021; Kannaujiya et al, 2021; Saji et al, 2020; Yadav et al, 2021) for the Indian Plate.…”

Section: Methodssupporting

confidence: 63%

GPS and InSAR derived evidences of intra‐basin stress and strike‐slip tectonics in the vicinity of 2001 (M7.7) earthquake, Kachchh, western India

et al. 2022

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The current geodetic investigation is based on nearly a decade of continuous Global Positioning System (GPS) data towards the western part of the Indian Plate (2009–2019). This research focused on the Kachchh Rift Basin (KRB), the seismically most active intra‐plate region of the Indian Plate, which has seen three ≥ M 7.0 earthquakes in the last two centuries. The GPS stations on the northern and southern margins show SSW and NNE directed motion, indicating that the KRB is currently under the influence of regional compressive stress on both flanks and the same is reflected in the form of earthquake activity in the center portion. Furthermore, the existence of intra‐basin stress, in addition to regional stress, increases strain accumulation and results in the creation of a Principal Deformation Zone (PDZ) in the central part of the KRB. The average annual deformation in the middle of KRB remains 1.0 ± 0.5 mm/year, while sites near the South Wagad Fault (SWF) experience 1.2 mm/year of fault parallel motion. The dominant fault normal motion along the flanks with a maximum fault parallel motion in the middle intimates the existence of strike‐slip tectonics in the central Kachchh. The geometric relationship of strike‐slip faults in a compressive margin and strain accumulation in pre‐existing faults (PDZ) is responsible for current strike‐slip and thrust motion in the Kachchh, including the 2001 Bhuj earthquake (M 7.7). Our geodetic model is well‐corroborated with the geological observations of the wrench fault model of strike‐slip faults. PS‐InSAR results in the northern part of the region between Khadir and Bela Islands show ≤6.0 mm of annual LOS displacement. GPS results indicate ≈ 1.3 to 1.4 ± 0.5 mm/year of fault parallel motion along the transverse Ekal Amrapar Fault (EAF). The non‐significant variation in GRACE‐derived TWS values (from 2009 to 2018) rules out non‐tectonic deformation in the vicinity of EAF and thus points to tectonic activity as the cause of the derived deformation in the region.

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Section: Methodssupporting

confidence: 63%

GPS and InSAR derived evidences of intra‐basin stress and strike‐slip tectonics in the vicinity of 2001 (M7.7) earthquake, Kachchh, western India

et al. 2022

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“…However, the results from F‐test show that the 2‐plate India model fits better below 95% confidence and is not statistically significant to justify a two‐plate system. Recently, Dumka et al (2022) analysed GPS data from the western part of the Narmada‐Son lineament for the period of 2009–2016 to characterize the deformation and crustal strain across the Narmada‐Son lineament. Their study reveals that maximum deformation of ~1.6 mm/year in the western part of the Narmada‐Son possibly indicates a segmentation of the Indian Plate, which is equivalent to an earthquake of Mw 6.0 (Dumka et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

“…Their study reveals that maximum deformation of $1.6 mm/year in the western part of the Narmada-Son possibly indicates a segmentation of the Indian Plate, which is equivalent to an earthquake of Mw 6.0 (Dumka et al, 2022).…”

Section: Indian Plate Motion Scenario and Associated Deformationmentioning

confidence: 99%

“…However, the results from F-test show that the 2-plate India model fits better below 95% confidence and is not statistically significant to justify a two-plate system. Recently, Dumka et al (2022) analysed GPS data from the western part of the Narmada-Son lineament for the period of 2009-2016 to characterize the deformation and crustal strain across the Narmada-Son lineament.…”

Section: Indian Plate Motion Scenario and Associated Deformationmentioning

confidence: 99%

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Segmentation of continental Indian plate by the Narmada‐Son diffuse plate boundary

et al. 2022

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The Narmada‐Son lineament is a major tectonic feature in Central India. Here we employ data from geodetic measurements of crustal deformation and upper mantle P‐wave travel time tomography and propose that the Narmada‐Son palaeo‐rift is a present‐day diffuse plate boundary that segments the continental part of the Indian “composite” plate into two component plates, the North and South‐Indian plate. Tomographic images reveal that the collision of an indenter, associated with the relatively faster moving South‐Indian plate, with the Narmada‐Son diffuse plate boundary acted as a pivot point exerting a torque on one of the component plates along with mechanical rotation. This new proposal along with a new identity of the Narmada‐Son diffuse plate boundary is in better agreement with the estimated location of the relative Euler pole across two respective component plates. Our model is also able to better explain the Indian “composite” plate hypothesis, diversity in the topographic architecture along the rift, and contrasting deformation styles on either side of the diffuse plate boundary.

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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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Crustal deformation measurements by global positioning system (GPS) along NSL, western India

Cited by 17 publications

References 50 publications

GPS and InSAR derived evidences of intra‐basin stress and strike‐slip tectonics in the vicinity of 2001 (M7.7) earthquake, Kachchh, western India

GPS and InSAR derived evidences of intra‐basin stress and strike‐slip tectonics in the vicinity of 2001 (M7.7) earthquake, Kachchh, western India

Segmentation of continental Indian plate by the Narmada‐Son diffuse plate boundary

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

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