Real-Time Strong-Motion Broadband Displacements from Collocated GPS and Accelerometers

Bock, Yehuda; Melgar, Diego; Crowell, B. W.

doi:10.1785/0120110007

Cited by 229 publications

(246 citation statements)

References 44 publications

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“…Combined with conventional seismic instrumentation, we should routinely use these plentiful data sources for seismological studies (Bock et al, 2011;Crowell et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Accordingly, very few phases following the arrival time of surface waves have been confirmed on high-rate GPS records, primarily because of the inherently lower signalto-noise ratio (SNR). Identification and retrieval of the weaker secondary arrivals from high-rate GPS records would further confirm capability of GPS in recording ground motions, and thus lead to improved broadband seismograms via collated GPS and seismometers (Bock et al, 2011). Among the later arrivals, the seismic phase ScS is expected to be strong due to the complete reflection at the core-mantle boundary between the solid mantle and the liquid outer core where shear waves disappear.…”

Section: Introductionmentioning

confidence: 86%

“…As a result, high-rate GPS records are now routinely used in studies of earthquake source parameters and rupture process independently of, or jointly with, seismological observations (Miyazaki et al, 2003;Ji et al, 2004;Bilich et al, 2008;Yokota et al, 2009;Avallone et al, 2011;Yue and Lay, 2011;Bock et al, 2011;Crowell et al, 2012). Though whole waveforms of highrate GPS records have been employed in modeling earthquake source processes, it is not certain whether the wiggles following surface waves are true ground-motion signals or contamination from GPS signal propagation effects such as multipath or ionospheric distortion.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Observation of Core Phase ScS from the Mw 9.0 Tohoku-Oki Earthquake with High-Rate GPS

Guo

Wang

et al. 2013

Seismological Research Letters

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“…Combined with conventional seismic instrumentation, we should routinely use these plentiful data sources for seismological studies (Bock et al, 2011;Crowell et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Observation of Core Phase ScS from the Mw 9.0 Tohoku-Oki Earthquake with High-Rate GPS

Guo

Wang

et al. 2013

Seismological Research Letters

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“…Considering that performances of GNSS positioning are not different between earthquake-free and earthquake-breaking periods [13], to exploit the potential of BDS and BDS/GPS in retrieving co-seismic displacements, we selected two weeks of data (from 29 December 2013 to 11 January 2014) from IGS Multi-GNSS Experiment (MGEX) stations in the Asia-Pacific region. In this case, data from a 1-Hz sampling rate MGEX stations GMSD and SIN1 were used (see station distribution in Figure 1).…”

Section: Real-time Kinematic Precise Positioning Performance Of Bds Imentioning

confidence: 99%

Precise Positioning of BDS, BDS/GPS: Implications for Tsunami Early Warning in South China Sea

et al. 2015

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Global Positioning System (GPS) has been proved to be a powerful tool for measuring co-seismic ground displacements with an application to seismic source inversion. Whereas most of the tsunamis are triggered by large earthquakes, GPS can contribute to the tsunami early warning system (TEWS) by helping to obtain tsunami source parameters in near real-time. Toward the end of 2012, the second phase of the BeiDou Navigation Satellite System (BDS) constellation was accomplished, and BDS has been providing regional positioning service since then. Numerical results indicate that precision of BDS nowadays is equivalent to that of the GPS. Compared with a single Global Satellite Navigation System (GNSS), combined BDS/GPS real-time processing can improve accuracy and especially reliability of retrieved co-seismic displacements. In the present study, we investigate the potential of BDS to serve for the early warning system of tsunamis in the South China Sea region. To facilitate early warnings of tsunamis and forecasting capabilities in this region, we propose to distribute an array of BDS-stations along the Luzon Island (Philippines). By simulating an earthquake with Mw = 8 at the Manila trench as an example, we demonstrate that such an array will be able to detect earthquake parameters in real time with a high degree of accuracy and, hence, contribute to the fast and reliable tsunami early warning system in this region.

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“…The effective integration of GNSS and SM data to maximise their complementary advantages is a topic of significant research interest [14,15]. The goal is to develop an early warning system that…”

Section: Introductionmentioning

confidence: 99%

Integration of Single-Frequency GNSS and Strong-Motion Observations for Real-Time Earthquake Monitoring

Zhang

et al. 2018

Remote Sensing

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Abstract:In this study, a real-time earthquake monitoring system based on the integration of single-frequency global navigation satellite system (GNSS) and strong motion (SM) observations was developed. This high-precision integrated system can provide full-frequency monitoring information, and it makes full use of SM data to quickly and accurately determine the vibration window for initial baseline shift correction. High-precision displacement data obtained from GNSS epoch-differenced velocity estimation are used to constrain the SM's low-frequency baseline shift. Hence, full-frequency monitoring information (displacement, velocity, and acceleration) can be provided in real-time. Three different datasets were used for validation and the results confirm that the proposed system can be used for practical earthquake monitoring.

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Real-Time Strong-Motion Broadband Displacements from Collocated GPS and Accelerometers

Cited by 229 publications

References 44 publications

Observation of Core Phase ScS from the Mw 9.0 Tohoku-Oki Earthquake with High-Rate GPS

Observation of Core Phase ScS from the Mw 9.0 Tohoku-Oki Earthquake with High-Rate GPS

Precise Positioning of BDS, BDS/GPS: Implications for Tsunami Early Warning in South China Sea

Integration of Single-Frequency GNSS and Strong-Motion Observations for Real-Time Earthquake Monitoring

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