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Journal Article

Global Navigation Satellite Systems Seismology for the 2012 M w 6.1 Emilia Earthquake: Exploiting the VADASE Algorithm

E. Benedetti, M. Branzanti, L. Biagi, G. Colosimo, A. Mazzoni, M. Crespi
Published: 01 May 2014
Seismological Research Letters (2014) 85 (3): 649–656.
DOI: https://doi.org/10.1785/0220130094
..., 2004 ; Blewitt et al. , 2006 ; Bock and Genrich, 2006 ) addressed the problem to retrieve them in real time, with accuracies of a few centimeters, from GPS high‐rate observations (1 Hz or more). In this context, the Variometric Approach for Displacements Analysis Standalone Engine ( VADASE ) has...
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Comparison between <span class="search-highlight">VADASE</span> and accelerometer acceleration‐frequency spectr...

Comparison between VADASE and accelerometer acceleration‐frequency spectr...

Published: 01 May 2014
Figure 6. Comparison between VADASE and accelerometer acceleration‐frequency spectra from 0 to 3 Hz at MODE station.
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Comparison among <span class="search-highlight">VADASE</span> and reference solutions at MO05 station (1 Hz obs...

Comparison among VADASE and reference solutions at MO05 station (1 Hz obs...

Published: 01 May 2014
Figure 3. Comparison among VADASE and reference solutions at MO05 station (1 Hz observations over 120 s interval 20 May 2012—02:04:00 to 02:06:00 GPS time, ionosphere‐free processing).
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Comparison between <span class="search-highlight">VADASE</span> L3 and L1 solutions at MO05 station (1 Hz obser...

Comparison between VADASE L3 and L1 solutions at MO05 station (1 Hz obser...

Published: 01 May 2014
Figure 4. Comparison between VADASE L3 and L1 solutions at MO05 station (1 Hz observations over 120 s interval 20 May 2012—02:04:00 to 02:06:00 GPS time).
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Comparison among MO05 <span class="search-highlight">VADASE</span> L3 solutions at MO05 station (data processed...

Comparison among MO05 VADASE L3 solutions at MO05 station (data processed...

Published: 01 May 2014
Figure 5. Comparison among MO05 VADASE L3 solutions at MO05 station (data processed at different rates over the 120 s interval 20 May 2012—02:04:00 to 02:06:00 GPS time).
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Comparison between <span class="search-highlight">VADASE</span> and accelerometer solutions (displacements) at ...

Comparison between VADASE and accelerometer solutions (displacements) at ...

Published: 01 May 2014
Figure 7. Comparison between VADASE and accelerometer solutions (displacements) at MODE station (40 s interval 20 May 2012—02:04:22 to 02:05:02 GPS time).
Journal Article

Single‐Frequency Instantaneous GNSS Velocities Resolve Dynamic Ground Motion of the 2016 M w 7.1 Iniskin, Alaska, Earthquake

Ronni Grapenthin, Michael West, Carl Tape, Matt Gardine, Jeff Freymueller
Published: 11 April 2018
Seismological Research Letters (2018) 89 (3): 1040–1048.
DOI: https://doi.org/10.1785/0220170235
.... Their method, Variometric Approach for Displacement Analysis Stand‐alone Engine (VADASE), provides displacements within a few centimeters when compared with those derived from traditional postprocessed positioning time series. The full version of VADASE uses dual‐frequency data and applies simple atmospheric...
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Comparison among Variometric Approach for Displacements Analysis Standalone...

Comparison among Variometric Approach for Displacements Analysis Standalone...

Published: 01 May 2014
Figure 2. Comparison among Variometric Approach for Displacements Analysis Standalone Engine ( VADASE ) and reference solutions at MODE station (1 Hz observations over 120 s interval 20 May 2012—02:04:00 to 02:06:00 GPS time, ionosphere‐free processing).
Journal Article

Earthquake Magnitude Scaling Using Peak Ground Velocity Derived from High‐Rate GNSS Observations

Rongxin Fang, Jiawei Zheng, Jianghui Geng, Yuanming Shu, Chuang Shi, Jingnan Liu
Published: 21 October 2020
Seismological Research Letters (2021) 92 (1): 227–237.
DOI: https://doi.org/10.1785/0220190347
... . Global Navigation Satellite Systems Seismology for the 2012 M w  6.1 Emilia earthquake: Exploiting the VADASE algorithm , Seismol. Res. Lett. 85 , no.  3 , 649 – 656 , doi: 10.1785/0220130094 . Benedetti E. Branzanti M. Colosimo G. Mazzoni A. , and Crespi M. 2015...
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Near‐Field Strong Ground Motions from GPS‐Derived Velocities for 2020 Intermountain Western United States Earthquakes

Brendan W. Crowell
Published: 20 January 2021
Seismological Research Letters (2021) 92 (2A): 840–848.
DOI: https://doi.org/10.1785/0220200325
... the VADASE algorithm , Seismol. Res. Lett. 85 , 649 – 655 , doi: 10.1785/0220130094 . Boore D. M. Stewart J. P. Seyhan E. , and Atkinson G. M. 2014 . NGA‐West2 equations for predicting PGA, PGV, and 5% damped PSA for shallow crustal earthquakes , Earthq. Spectra 3 , 1057...
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Coseismic and Postseismic Deformation Associated with the 2018 M w 7.9 Kodiak, Alaska, Earthquake from Low‐Rate and High‐Rate GPS Observations

Yangmao Wen, Zelong Guo, Caijun Xu, Guangyu Xu, Chuang Song
Published: 07 May 2019
Bulletin of the Seismological Society of America (2019) 109 (3): 908–918.
DOI: https://doi.org/10.1785/0120180246
.... Devoti R. , and Pietrantonio G. 2018 . VADASE reliability and accuracy of real‐time displacement estimation: Application to the central Italy 2016 earthquakes , Remote Sens. 10 , no.  8 , 1 – 20 , doi: 10.3390/rs10081201 . Freed A. M. , and Lin J. 2001 . Delayed triggering...
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Testing a Prototype Earthquake Early Warning System: A Retrospective Study of the 2021 M w 7.4 Maduo, Tibet, Earthquake

Zhiyu Gao, Yanchuan Li, Xinjian Shan, Lijiang Zhao, Yufei Han
Published: 09 March 2022
Seismological Research Letters (2022) 93 (3): 1650–1659.
DOI: https://doi.org/10.1785/0220210245
... . Benedetti E. Branzanti M. Biagi L. Colosimo G. Mazzoni A. , and Crespi M. 2014 . Global Navigation Satellite Systems seismology for the 2012 Mw 6.1 Emilia earthquake: Exploiting the VADASE algorithm , Seismol. Res. Lett. 85 , no.  3 , 649 – 653 , doi: 10.1785/0220130094...
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Rapid Earthquake Source Description Using Variometric‐Derived GPS Displacements toward Application to the 2019 M w 7.1 Ridgecrest Earthquake

Jianfei Zang, Caijun Xu, Yangmao Wen, Xiaohang Wang, Kefeng He
Published: 20 October 2021
Seismological Research Letters (2022) 93 (1): 56–67.
DOI: https://doi.org/10.1785/0220210129
...: 10.1785/0220190347 . Fratarcangeli F. Savastano G. D’Achille M. Mazzoni A. Crespi M. Riguzzi F. Devoti R. , and Pietrantonio G. 2018 . VADASE reliability and accuracy of real‐time displacement estimation: Application to the Central Italy 2016 earthquakes , Rem. Sens...
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GNSS for Quasi‐Real‐Time Earthquake Source Determination in Eastern Tibet: A Prototype System toward Early Warning Applications

Xinjian Shan, Yanchuan Li, Zhenjie Wang, Hao Yin, Xiaodong Liu, Yunhua Liu, Guohong Zhang, Yingfeng Zhang, Chunyan Qu
Published: 28 April 2021
Seismological Research Letters (2021) 92 (5): 2988–2997.
DOI: https://doi.org/10.1785/0220190244
... earthquake: Exploiting the VADASE algorithm , Seismol. Res. Lett. 85 , no.  3 , 649 – 656 . Chen Q. Freymueller J. T. Yang Z. Xu C. Jiang W. Wang Q. , and Liu J. 2004 . Spatially variable extension in southern Tibet based on GPS measurements , J. Geophys. Res. 109...
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Interchangeable Use of GNSS and Seismic Data for Rapid Earthquake Characterization: 2021 Chignik, Alaska, Earthquake

Revathy M. Parameswaran, Ronni Grapenthin, Michael E. West, Alexander Fozkos
Published: 08 March 2023
Seismological Research Letters (2023) 94 (3): 1367–1378.
DOI: https://doi.org/10.1785/0220220357
... earthquake: Exploiting the VADASE algorithm , Seismol. Res. Lett. 85 , no.  3 , 649 – 656 . Benz H. M. Herman M. Tarr A. C. Hayes G. P. Furlong K. P. Villaseñor A. Dart R. L. , and Rhea S. 2011 . Seismicity of the earth 1900‐2010 Aleutian arc and vicinity , U.S...
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Development of a Geodetic Component for the U.S. West Coast Earthquake Early Warning System

J. R. Murray, B. W. Crowell, R. Grapenthin, K. Hodgkinson, J. O. Langbein, T. Melbourne, D. Melgar, S. E. Minson, D. A. Schmidt
Published: 03 October 2018
Seismological Research Letters (2018) 89 (6): 2322–2336.
DOI: https://doi.org/10.1785/0220180162
... M w  6.1 Emilia earthquake: Exploiting the VADASE algorithm , Seismol. Res. Lett. 85 , no.  3 , 649 – 656 , doi: 10.1785/0220130094 . Bock Y. , and Melgar D. 2016 . Physical applications of GPS geodesy: A review , Rep. Progr. Phys. 79 , 106801 , doi: 10.1088/0034...
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