GPS geodetic infrastructure for natural hazards study in the Puerto Rico and Virgin Islands region

Yang, Linqiang; Wang, Guoquan; Huerfano, V.; Hillebrandt-Andrade, Christa G. von; Martínez-Cruzado, J. A.; Liu, Hanlin

doi:10.1007/s11069-016-2344-7

Cited by 13 publications

(11 citation statements)

References 71 publications

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“…Owing to the fact that this project is the first shield driven tunnel beneath the Hutuo River in Shijiazhuang, a significant concern regarding the riverbed deformation and tunneling safety occurred during the excavations. Based on our experiences from previous GPS monitoring projects [21][22][23][24][25], we established a GPS monitoring network with one base station (BASE) and six rover stations named GPS1, GPS2, GPS3, GPS4, GPS5, and GPS6 ( Figure 1b). The base station was installed at the headquarters of the project, about two kilometers away from the river (Figure 1a).…”

Section: Project Overviewmentioning

confidence: 99%

Detection and Monitoring of Tunneling-Induced Riverbed Deformation Using GPS and BeiDou: A Case Study

et al. 2019

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Shield tunneling under rivers often requires monitoring riverbed deformations in near real-time. However, it is challenging to measure riverbed deformation with conventional survey techniques. This study introduces a comprehensive method that uses the Global Positioning System (GPS) of the USA and the BeiDou navigation satellite system (BeiDou) of China to monitor riverbed deformation during the construction of twin tunnels beneath the Hutuo River in Shijiazhuang, China. A semi-permanent GPS network with one base station outside the river and six rover stations within the river was established for conducting near real-time and long-term monitoring. The distances between the base and the rover antennas are within two kilometers. The network was continuously operating for eight months from April to December 2018. The method is comprised of three components: (1) Monitoring the stability of the base station using precise point positioning (PPP) method, a stable regional reference frame, and a seasonal ground deformation model; (2) monitoring the relative positions of rover stations using the carrier-phase double-difference (DD) positioning method in near real-time; and (3) detecting abrupt and gradual displacements at both base and rover stations using an automated change point detection algorithm. The method is able to detect abrupt positional-changes as minor as five millimeters in near real-time and gradual positional-changes at a couple of millimeters per day within a week. The method has the flexibility of concurrent processing different GPS and BeiDou data sessions (e.g., every 15 minutes, 30 minutes, one hour, one day) for diffident monitoring purposes. This study indicates that BeiDou observations can also achieve few-millimeter-accuracy for measuring displacements. Parallel processing GPS and BeiDou observations can improve the reliability of near real-time structural deformation monitoring and minimize false alerts. The method introduced in this article can be applied to other urban areas for near real-time and long-term structural health monitoring.

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Section: Project Overviewmentioning

confidence: 99%

Detection and Monitoring of Tunneling-Induced Riverbed Deformation Using GPS and BeiDou: A Case Study

et al. 2019

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“…In general, a global geodetic reference frame is a no-net-rotation (NNR) reference frame that is realized with an approach of minimizing the overall horizontal movements of a group of selected reference stations distributed worldwide [12]. As a result, GNSS-derived site movements with respect to a global reference frame are often dominated by factors such as the long-term drift and rotation of the tectonic plate on which the site is located and other secular movements [25]. In general, site velocities with respect to a global reference frame are difficult to interpret visually from a regional or local-scale geophysical perspective.…”

Section: Realization Of Gom20mentioning

confidence: 99%

GOM20: A Stable Geodetic Reference Frame for Subsidence, Faulting, and Sea-Level Rise Studies along the Coast of the Gulf of Mexico

et al. 2020

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We have established a stable regional geodetic reference frame using long-history (13.5 years on average) observations from 55 continuously operated Global Navigation Satellite System (GNSS) stations adjacent to the Gulf of Mexico (GOM). The regional reference frame, designated as GOM20, is aligned in origin and scale with the International GNSS Reference Frame 2014 (IGS14). The primary product from this study is the seven-parameters for transforming the Earth-Centered-Earth-Fixed (ECEF) Cartesian coordinates from IGS14 to GOM20. The frame stability of GOM20 is approximately 0.3 mm/year in the horizontal directions and 0.5 mm/year in the vertical direction. The regional reference frame can be confidently used for the time window from the 1990s to 2030 without causing positional errors larger than the accuracy of 24-h static GNSS measurements. Applications of GOM20 in delineating rapid urban subsidence, coastal subsidence and faulting, and sea-level rise are demonstrated in this article. According to this study, subsidence faster than 2 cm/year is ongoing in several major cities in central Mexico, with the most rapid subsidence reaching to 27 cm/year in Mexico City; a large portion of the Texas and Louisiana coasts are subsiding at 3 to 6.5 mm/year; the average sea-level-rise rate (with respect to GOM20) along the Gulf coast is 2.6 mm/year with a 95% confidence interval of ±1 mm/year during the past five decades. GOM20 provides a consistent platform to integrate ground deformational observations from different remote sensing techniques (e.g., GPS, InSAR, LiDAR, UAV-Photogrammetry) and ground surveys (e.g., tide gauge, leveling surveying) into a unified geodetic reference frame and enables multidisciplinary and cross-disciplinary research.

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“…The geometry of the network of reference stations has been recognized as a major element affecting the overall stability of a regional reference frame [35,46,47]. Ideally, the selected reference stations should be evenly distributed over the whole area of interest.…”

Section: Effects Of Network Geometrymentioning

confidence: 99%

“…Thus, a local-scale reference frame may provide a more stable reference than a regional-scale reference frame and, in turn, is preferred for monitoring local-scale ground deformation over time and space. A dense GPS network has been operated in the Puerto Rico and Virgin Islands (PRVI) region for over ten years [46]. A local-scale reference frame, stable Puerto Rico and Virgin Islands Reference Frame (PRVI12), was established by Wang et al [34] for landslide monitoring.…”

Section: Stability Of Carib18mentioning

confidence: 99%

“…Seven reference stations with a history of five years were used to realize PRVI12, which achieved stabilities of approximately 1.5 mm/year in both horizontal and vertical directions. PRVI12 was updated to PRVI14 in 2016 by using three more reference stations and a longer period of GPS observations [46]. The stability of PRVI14 was 0.4 mm/year in the horizontal direction and 0.6 mm/year in the vertical direction.…”

Section: Stability Of Carib18mentioning

confidence: 99%

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CARIB18: A Stable Geodetic Reference Frame for Geological Hazard Monitoring in the Caribbean Region

et al. 2019

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We have developed a Stable Caribbean Reference Frame 2018 (CARIB18) using long-term continuous observations from 18 continuously operating Global Positioning System (GPS) stations fixed on the margins of the stable portion of the Caribbean plate. The frame stability of CARIB18 is approximately 0.7 mm/year in the horizontal direction and 0.9 mm/year in the vertical direction. A method that employs a total of seven parameters for transforming positional time series from a global reference frame (IGS14) to a regional reference frame is introduced. The major products from this study include the seven parameters for realizing CARIB18 coordinates and three-component site velocities of 250 continuous GPS stations (>3 years) with respect to CARIB18. Geological hazard monitoring using GPS has traditionally been performed using the carrier-phase differential method that requires single or multiple reference stations to be simultaneously operated in the field. CARIB18 allows for precise geological hazard monitoring using stand-alone GPS, which substantially reduces field costs and simplifies logistics for long-term geological hazard monitoring. Applications of CARIB18 in plate motion, post-seismic, and volcano monitoring and research are demonstrated in this article. The regional reference frame will be periodically updated every few years with more reference stations and longer periods of observations to mitigate the degradation of the frame over time and will be synchronized with the updates of the International GNSS Service (IGS) IGS reference frame.

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GPS geodetic infrastructure for natural hazards study in the Puerto Rico and Virgin Islands region

Cited by 13 publications

References 71 publications

Detection and Monitoring of Tunneling-Induced Riverbed Deformation Using GPS and BeiDou: A Case Study

Detection and Monitoring of Tunneling-Induced Riverbed Deformation Using GPS and BeiDou: A Case Study

GOM20: A Stable Geodetic Reference Frame for Subsidence, Faulting, and Sea-Level Rise Studies along the Coast of the Gulf of Mexico

CARIB18: A Stable Geodetic Reference Frame for Geological Hazard Monitoring in the Caribbean Region

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