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Global Navigation Satellite Systems Report of a Joint Workshop of the National Academy of Engineering and the Chinese Academy of Engineering (2012) / Chapter Skim
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Recent Progress on GNSS Seismology--Liu Jingnan, Fang Rongxin, and Shi Chuang
Pages 189-198

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From page 189...
... results and seismometer results, we set up a Global Navigation Satellite System (GNSS) seismologic testing platform.
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From page 190...
... . Kinematic high-rate GNSS positioning has been demonstrated successful for measuring seismic waves, in which relative mode is applied for GNSS data processing by assuming that one of the stations can be fixed to serve as a datum to compute absolute displacements (Bock and Prawirodirdjo, 2004; Larson et al., 2007)
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From page 191...
... GNSS data were collected with a sampling rate of 50 Hz while seismometers and IMU simultaneously worked to record data of acceleration and attitude. Data Processing Strategy High-rate GNSS data were processed with the PANDA (position and naviga tion system data analyst)
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From page 192...
... The RMS error over the entire event is 1.8 mm. APPLICATIONS OF GNSS SEISMOLOGY Studies on Propagation Velocity and Earthquake Parameter Determination Seismic waves take different times to reach various stations, and with the signals captured by GNSS we can determine the arrival times of seismic waves.
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From page 193...
... Figure 4 describes the principle of epicenter determination with the coordinates of GNSS stations and the arrival times of seismic waves. Based on this method, GPS data of the Wenchuan earthquake are used to infer the epicenter.
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From page 194...
... There are still some problems with GNSS seismology. For instance, GNSS is not as sensitive as seismometers, GNSS is not applicable for small or far-field earthquakes currently, and the sampling rate is still insufficient to capture highfrequency seismic waves.
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From page 195...
... 2009. Love wave dispersion in central North America determined using absolute displacement seismograms from high-rate GPS.
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From page 196...
... earthquake using 1-Hz GPS data. Geophysical Research Letters 31: L21603.
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From page 197...
... 2007. Comparisons of ground motions from colocated and closely spaced one-sample-per-second Global Positioning System and accelerograph record ings of the 2003 M6.5 San Simeon, California earthquake in the Parkfield Region.
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Key Terms

  • seismic waves
  • geophysical research
  • gnss data
  • research letters
  • gnss receiver

  • data processing
  • wenchuan earthquake
  • global navigation
  • gps data
  • navigation satellite

  • testing platform
  • sampling rate
  • gnss kinematic
  • gnss research
  • gnss seismometer

  • gnss positioning
  • seismic waveforms
  • reference frame
  • arrival times
  • ground motions

  • gnss stations
  • earthquake parameter
  • gps sites
  • seismometer measures
  • seismometer testing

  • seismic wave
  • seismometer data
  • measuring seismic
  • fault earthquake
  • denali fault


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