Crustal motion and deformation in Ecuador from cGNSS time series

Staller, Alejandra; Álvarez‐Gómez, José A.; Luna, Marco P.; Béjar‐Pizarro, Marta; Gaspar‐Escribano, Jorge M.; Martínez-Cuevas, Sandra

doi:10.1016/j.jsames.2018.05.014

Cited by 12 publications

(10 citation statements)

References 56 publications

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“…The methodological approach used for the processing of GNSS observations with the Bernese software has been: preparation of files (observations/input data), data pre-processing and finally data processing and estimation of daily coordinates. As a result of this processing, we obtained daily SINEX files [25] with the geocentric cartesian coordinates of the stations and the covariance matrix of variances indicating the precision (more details of the data processing in [21]). …”

Section: Data Processingmentioning

confidence: 99%

“…This allows to obtain a clearer idea of the behavior of each series in their respective components and the advantage of working with small values, since these can be centered in zero, which facilitates their study. Prior to the analysis of the time series it is necessary to work with clean series, meaning that they are free of atypical values and offsets (more details in [21]). …”

Section: Analysis Of Datamentioning

confidence: 99%

“…The maximum difference has been obtained in the GYEC station with −2.9 mm/yr and 3.9 mm/yr in the east and north component, respectively. (More details of the velocity field in [21]). …”

Section: Velocity Fieldmentioning

confidence: 99%

“…Inset shows tectonic setting of the zone, including the plates, microplates and blocks that interact in this region: Caribbean, South American, Nazca and Cocos plates, Panama Micro-plate and North Andean Block. Figure adapted from [21]. a combination of factors, including the oblique subduction of the Nazca Plate, the coupling of the subduction interface, and the subduction of the Carnegie Ridge, among others.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we present a methodological approach to obtain the velocity model for Ecuador, by means of the study of time series taking into account the tendency, the seasonal variations and the type of noise, in order to obtain more reliable results [21]. The estimated velocity field allows modeling with a high spatial resolution (0.25…”

Section: Introductionmentioning

confidence: 99%

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Methodological approach for the estimation of a new velocity model for continental Ecuador

et al. 2017

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Abstract:We used 33 stations belonging of the Ecuador Continuous Monitoring GNSS Network (REGME) during the period 2008-2014, with aim to contribute with a methodological approach for the estimation of a new velocity model for Continental Ecuador. We used daily solutions to perform the analysis of GNSS time series, to obtain models of the series that best fit, taking into count the trend, seasonal variations and the type of noise. The sum of all these components represent the real-time series, and thus we can have a better estimation of the velocity parameter and its uncertainty. The velocities were calculated introducing the trend, seasonality and noise that were presented in each series into the overall model, which improved uncertainty by 12% and changed in magnitude up to 1.7 mm/yr and 2.5 mm/yr in the horizontal and vertical components, respectively, with respect to the initial velocities. The velocity field describes the crustal movement of the REGME stations in mainland Ecuador with uncertainty of 1 mm/yr and 2 mm/yr for the horizontal and vertical components, respectively. Finally, a velocity model has been developed using the kriging technique whose geostatistical approach has been based on the data to identify the spatial characteristics by examining the observations by peers. The mean square error (rms) of prediction obtained in this method is 1.78 mm/yr and 1.95 mm/yr in the east and north components, respectivaly. The vertical component could not be modeled due to its chaotic behavior.

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Section: Data Processingmentioning

confidence: 99%

Section: Analysis Of Datamentioning

confidence: 99%

“…The maximum difference has been obtained in the GYEC station with −2.9 mm/yr and 3.9 mm/yr in the east and north component, respectively. (More details of the velocity field in [21]). …”

Section: Velocity Fieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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