GPS seismometers with up to 20 Hz sampling rate
作者： Linlin Ge , Shaowei Han , Chris Rizos , Yuzo Ishikawa , Mitsuyuki Hoshiba
DOI: 10.1186/BF03352300
关键词: Gps antenna 、 Kinematics 、 Bandwidth (signal processing) 、 Ground motion 、 Geology 、 Seismometer 、 Global Positioning System 、 Geodesy 、 Waveform 、 Seismology 、 Accelerometer
摘要: The large near-field displacements before and during an earthquake are invaluable information for source study the detection of slow/silent quakes or pre-seismic crustal deformation events. However due to bandwidth limitations saturation current seismometers cannot measure many these directly. In a joint experiment between University New South Wales (UNSW) Meteorological Research Institute (MRI), two Trimble MS750 GPS receivers were used in Real-Time Kinematic (RTK) mode with fast sampling rate up 20 Hz test feasibility “GPS seismometer” measuring antenna, accelerometer, velocimeter installed on roof shake-simulator truck. simulated seismic waveforms resolved from RTK time series very good agreement results accelerometer velocimeter, after integrating twice once respectively. Moreover, more displacement revealed although they noisier.
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