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  • 04.03. Geodesy  (3)
  • 01. Atmosphere::01.01. Atmosphere::01.01.07. Volcanic effects
  • 03. Hydrosphere::03.02. Hydrology::03.02.04. Measurements and monitoring
  • Elsevier B.V. on behalf of KeAi Communications Co., Ltd  (2)
  • Springer Berlin Heidelberg  (1)
  • Copernicus
  • EGU
  • Institute of Electrical and Electronics Engineers (IEEE)
  • 2015-2019  (3)
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Year
  • 1
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    Theory of second order stationary random processes applied to GPS coordinate time-series (2019)
    Springer Berlin Heidelberg
    Details
    Publication Date: 2019-12-05
    Description: The analysis of Global Positioning System (GPS) coordinates time series is a valuable tool in quantifying crustal deformations. The longer continuous GPS time series allow estimation of nonlinear signatures. As a matter of fact, besides the linear and periodic behaviors, other relevant signals are present in such time series as the so-called transient deformations. They can be related to, e.g., slow slip events, which play a crucial role in studying fault mechanisms. To give reliable estimates of these signals, an appropriate and rigorous approach for defining the deterministic and the stochastic models of the data is needed. We prove that the theory of the second order stationary random process (SOSRP) can be used to describe the stochastic behavior of the daily GPS time series. In particular, the second order stationarity condition has to be verified for the daily GPS coordinate time series to be described as a SOSRP. This method has been already used for modeling the gravity field of the earth and in predicting/filtering problems, and this work shows that it can also be useful for characterizing the colored noise in the GPS time series.
    Description: Published
    Description: id 86
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: GPS ; time series ; Stationary stochastic process ; Auto-covariance function ; Power law spectrum ; 04.03. Geodesy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Comparison of the historic seismicity and strain-rate pattern from a dense GPS-GNSS network solution in the Italian Peninsula (2018)
    Elsevier B.V. on behalf of KeAi Communications Co., Ltd
    Details
    Publication Date: 2018-03-01
    Description: Geodesy, Geodynamics and Tectonics of the Italian Peninsula
    Description: We present a dense crustal velocity field and corresponding strain-rate pattern computed using Global Positioning System (GPS)- Global Navigation Satellite System (GNSS) data from several hundred permanent stations in the Italian Peninsula. GPS data analysis is based on the GAMIT/GLOBK 10.6 software, which was developed and maintained mainly by Massachusetts Institute of Technology (MIT), using tools based on the distributed-sessions approach implemented in this package. The GPS data span the period from January 2008 to December 2012 and come from several different permanent GPS networks in Italy. The GLOBK package implemented in the last version of the GAMIT package is used to compute the position time-series and velocities registered in the International Terrestrial Reference Frame (ITRF) 2008. The resulting high-density intra-plate velocity field provides indications of the tectonics of the Mediterranean region. A computation of the strain-rate pattern from GPS data is performed and compared with the map of the epicentral locations of historical earthquakes that occurred in the last 1000 years in the Italian territory, showing that, in general, higher crustal deformation rates are active in regions affected by seismicity of greater magnitude.
    Description: Published
    Description: 303-316
    Description: 7T. Struttura della Terra e geodinamica
    Description: N/A or not JCR
    Keywords: GPS ; Strain Rate ; Distributed Sessions ; Tectonics ; 04.03. Geodesy ; 04.07. Tectonophysics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    Geodynamics of the Calabrian Arc area (Italy) inferred from a dense GNSS network observations (2018)
    Elsevier B.V. on behalf of KeAi Communications Co., Ltd
    Details
    Publication Date: 2018-03-01
    Description: Geodynamics of the Calabrian Arc, Geodesy, Tectonics, Strain Rate.
    Description: The tectonics and geodynamics of the Calabria region are presented in this study. These are inferred by precise computation of Global Navigation Satellite Systems (GNSS) permanent station velocities in a stable Eurasian reference framework. This allowed computation of the coordinates, variance and covariance matrixes, and horizontal and vertical velocities of the 36 permanent sites analyzed, together with the strain rates, and using different techniques. Interesting geodynamic phenomena are presented, including compressional, and deformational fields in the Tyrrhenian coastal sites of Calabria, extensional trends of the Ionian coastal sites, and sliding movement of the Crotone Basin. Conversely, on the northern Tyrrhenian side of the network near the Cilento Park area, the usual extensional tectonic perpendicular to the Apennine chain is observed. The largescale pattern of the GNSS height velocities is shown, which is characterized by general interesting geodynamic vertical effects that appear to be due to geophysical movement and anthropic activity. Finally, the strain-rate fields computed through three different techniques are compared.
    Description: Published
    Description: 76-86
    Description: 7T. Struttura della Terra e geodinamica
    Description: N/A or not JCR
    Keywords: Global Navigation Satellite Systems (GNSS) ; Geodesy ; Geodynamics ; Calabrian Arc ; Strain Rate ; Tectonics ; Reference Frame ; Network Adjustment ; 04.03. Geodesy ; 04.07. Tectonophysics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
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