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RISThe 95% Confidence Interval for GNSS-Derived Site Velocities
Publisher: ASCE
Abstract: Linear trends, or site velocities, derived from global navigation satellite system (GNSS) positional time series have been commonly applied to site stability assessments, structural health monitoring, sea-level rise, and ...
Interpreting <i>OPUS-Static</i> Results Accurately
Publisher: American Society of Civil Engineers
OPUS for Horizontal Subcentimeter-Accuracy Landslide Monitoring: Case Study in the Puerto Rico and Virgin Islands Region
Publisher: American Society of Civil Engineers
Abstract: This study demonstrates the usefulness of an approach based on the Online Positioning User Service (OPUS) provided by the National Geodetic Survey (NGS) of the National Oceanic and Atmospheric Administration (NOAA) to ...
Houston GNSS Network for Subsidence and Faulting Monitoring: Data Analysis Methods and Products
Publisher: ASCE
Abstract: Harris-Galveston Subsidence District (HGSD), in collaboration with several other agencies, has been operating a dense Global Navigation Satellite System (GNSS) network for subsidence and faulting monitoring within the ...
Rates of Natural Subsidence along the Texas Coast Derived from GPS and Tide Gauge Measurements (1904–2020)
Publisher: ASCE
Abstract: This study investigated the rate of natural subsidence along the Texas coast using multidecadal to century tide gauge (TG) and global positioning system (GPS) data sets. The rates of land subsidence and sea level rise are ...
Comparisons of Ground-Based and Building-Based CORS: A Case Study in the Region of Puerto Rico and the Virgin Islands
Publisher: American Society of Civil Engineers
Abstract: This study investigated long-term observations from three pairs of closely spaced, continuously operating reference stations (CORS): STVI and VITH (2008–2014, 0.6 km apart), BYSP and PRHL (2008–2014, 3.2 km apart), and ...
Millimeter-Accuracy Structural Deformation Monitoring Using Stand-Alone GPS: Case Study in Beijing, China
Publisher: American Society of Civil Engineers
Abstract: Structural monitoring and engineering surveys that use the Global Positioning System (GPS) have traditionally performed using a so-called carrier-phase double-difference method in data processing. The method requires at ...
Comparisons of OPUS and PPP Solutions for Subsidence Monitoring in the Greater Houston Area
Publisher: American Society of Civil Engineers
Abstract: Global positioning system (GPS) techniques have been applied to study land subsidence in the greater Houston area for over two decades (1993–2016). The free Online Positioning User Service (OPUS) utility developed by the ...
Delineating Beach and Dune Morphology from Massive Terrestrial Laser-Scanning Data Using <i>Generic Mapping Tools</i>
Publisher: American Society of Civil Engineers
Abstract: Terrestrial laser-scanning (TLS) techniques have been proven to be efficient tools for collecting three-dimensional high-density and high-accuracy point clouds for coastal research and resource management. However, TLS ...
SChina20: A Stable Geodetic Reference Frame for Ground Movement and Structural Deformation Monitoring in South China
Publisher: ASCE
Abstract: We have established a stable regional geodetic reference frame, designated as SChina20, using approximately 10-year observations (2010–2019) at 40 Global Navigation Satellite System (GNSS) sites in South China. The regional ...