A stable reference frame for landslide monitoring using GPS in the Puerto Rico and Virgin Islands region

Wang, Guoquan; Kearns, Timothy J.; Yu, Jiangbo; Saenz, Gabriel

doi:10.1007/s10346-013-0428-y

Cited by 46 publications

(14 citation statements)

References 43 publications

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“…The average 3D velocity of all reference stations indicates the overall stability (precision) of the reference frame. According to our previous study on the precision of local reference frames [42,52,53], the updated SPRNVIRF would be able to distinguish 0.3 mm/year horizontal displacements and 0.5 mm/year vertical displacements. Croix island moves away from the PRNVI block with a horizontal velocity of 1.7 mm/year (S55 ∘ E).…”

Section: Gps Geodesy Infrastructure In the Prvi Regionmentioning

confidence: 99%

“…A group of common points (reference stations) are used to tie a local reference to a global reference frame. A local-scale reference frame, named Stable Puerto Rico and Northern Virgin Islands Reference Frame (SPRNVIRF), had been realized by Wang et al [42]. This local reference frame was originally developed for conducting precise landslide monitoring in the PRVI region.…”

Section: Gps Geodesy Infrastructure In the Prvi Regionmentioning

confidence: 99%

“…The specific configuration for the GIPSY processing is addressed in one of our recent publications [41]. According to our previous statistical studies on the accuracy of the single-receiver phase-ambiguity-fixed PPP solutions, the daily positions would achieve 3 to 5 mm horizontal accuracy and 6 to 9 mm vertical accuracy (RMS: root-mean-square) in the PRVI region [38,42]. The PPP solutions at a single station alone are not sufficient by themselves to precisely track long-term tectonic motions.…”

Section: Gps Geodesy Infrastructure In the Prvi Regionmentioning

confidence: 99%

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Relative Motion between St. Croix and the Puerto Rico-Northern Virgin Islands Block Derived from Continuous GPS Observations (1995–2014)

Liu¹,

Wang²

2015

International Journal of Geophysics

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St. Croix is located inside the sweep of the Lesser Antilles arc and near the southeastern edge of the Greater Antillean ridge. It is separated from the Puerto Rico and the Northern Virgin Islands (PRNVI) block by the Virgin Islands basin. Recent seismic activities demonstrate that the Virgin Islands basin is tectonically active. A better understanding of fault activities in the basin would improve seismic hazard assessment in this region. This study illustrates out a detailed way of deriving relative motion between St. Croix and the PRNVI block using current GPS geodesy infrastructure in the PRVI region. The local geodesy infrastructure includes over 20 continuous GPS stations and a Stable PRNVI Reference Frame (SPRNVIRF). Twenty-year continuous GPS observations (1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014) on St. Croix indicate that the island is presently moving away from the PRNVI block toward the southeast (S55 ∘ E) at a steady rate of 1.7 mm/year. The velocity vector can be decomposed into two 1.2 mm/year components along the long-axis and short-axis directions of the rhomboidal Virgin Islands basin. Quantitative results indicate that the Virgin Islands basin presently experiences left-lateral motion in a nearly east-west direction and extension in a nearly north-south direction.

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Section: Gps Geodesy Infrastructure In the Prvi Regionmentioning

confidence: 99%

Section: Gps Geodesy Infrastructure In the Prvi Regionmentioning

confidence: 99%

Section: Gps Geodesy Infrastructure In the Prvi Regionmentioning

confidence: 99%

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Relative Motion between St. Croix and the Puerto Rico-Northern Virgin Islands Block Derived from Continuous GPS Observations (1995–2014)

Liu¹,

Wang²

2015

International Journal of Geophysics

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“…In the surveying and geodesy research community, the Helmert transformation method is often used to transform Cartesian coordinates from a well-established global reference frame to regional or local reference frames (e.g., Pearson and Snay, 2012;Wang et al, , 2014aWang et al, , 2015. The transformation involves seven parameters, which include rotation vector, translation vector and the differential scale factor.…”

Section: Sgomrf14 Establishmentmentioning

confidence: 99%

Introduction to the GNSS geodetic infrastructure in the Gulf of Mexico Region

Wang

2016

Survey Review

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“…On the other hand, an alignment based on a small network close to the analyzed area is the best choice for local monitoring applications (Wang et al 2014), avoiding most of the common signals of the reference frame, or mismodeling. When evaluating the absolute movements of a regional network, a local alignment can lead to some loss of information (Freymueller 2009), but it may yet be a good choice if the aim is to realize a local densification of the reference frame.…”

Section: Introductionmentioning

confidence: 99%

Improved PPP performance in regional networks

2015

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It has been demonstrated that precise point positioning (PPP) is a powerful tool in geodetic and geodynamic applications. As is known, it provides solutions in the reference system of the satellite orbits. We focuses on the strategy to transform PPP solutions into the International Terrestrial Reference System (ITRS) by applying a set of local Helmert transformation parameters obtained from a regional network rather than using global parameters. In order to carry out this test, a regional network composed of 14 stations was analyzed using GIPSY-OASIS II software, over a period of 6 years. Two solutions differently aligned to the ITRS were compared in terms of accuracy, scattering, frequency content and local movements. One solution is aligned to IGb08 through the X-files provided by JPL, while the other is aligned to the European reference frame densification of IGb08 using customized regional X-files. Therefore, both are updated realizations of the ITRS. The test shows that a regional, instead of a global, alignment to the ITRS can significantly improve the repeatability of the solutions. A small improvement can also be found in terms of agreement with the regional densification of IGb08. The analysis of the signal content in the differently aligned time series allowed some differences to be found, in terms of both frequency and magnitude. These differences are mainly due to an evident common signal that is defined for the whole area and which is removed when using regional alignment. Finally, residual scattering was calculated after removing the modeled signals from each time series, which results in a scatter being significantly smaller for the regional solution than for the global solution. In order to obtain these results, the choice of the reference stations is a major question and therefore discussed in detail.

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A stable reference frame for landslide monitoring using GPS in the Puerto Rico and Virgin Islands region

Cited by 46 publications

References 43 publications

Relative Motion between St. Croix and the Puerto Rico-Northern Virgin Islands Block Derived from Continuous GPS Observations (1995–2014)

Relative Motion between St. Croix and the Puerto Rico-Northern Virgin Islands Block Derived from Continuous GPS Observations (1995–2014)

Introduction to the GNSS geodetic infrastructure in the Gulf of Mexico Region

Improved PPP performance in regional networks

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