Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake
The GPS displacement time series are today mostly used for the estimation of the transient (period <2sec) and coseismic (static) displacement of an earthquake, while the estimation of the velocity and acceleration is based only seismic networks. In this study, we examine whether the GPS records c...
| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2016
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| Online Access: | https://eprints.nottingham.ac.uk/35272/ |
| _version_ | 1848795041008451584 |
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| author | Psimoulis, Panos Houlié, Nicolas Clotaire, Michel Meindl, Michel Rothacher, Markus |
| author_facet | Psimoulis, Panos Houlié, Nicolas Clotaire, Michel Meindl, Michel Rothacher, Markus |
| author_sort | Psimoulis, Panos |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The GPS displacement time series are today mostly used for the estimation of the transient (period <2sec) and coseismic (static) displacement of an earthquake, while the estimation of the velocity and acceleration is based only seismic networks. In this study, we examine whether the GPS records can be used to capture the spectral characteristics of the long-period signal and their consistency with the corresponding seismic motion sensors, for the displacement, velocity and acceleration. For this purpose, we use the 1-Hz GPS network records of the Tohoku-Oki 2011 earthquake processed in Precise Point Positioning (PPP). The derived GPS and strong-motion waveforms were analysed resulting into displacement, velocity and acceleration for periods ranging from 3 to 100s. The derived GPS and strong-motion time series were compared and it was found that these are of similar pattern and amplitude. However, there is a non-constant phase shift between the corresponding GPS and strong-motion time series, resulting in significant difference between the time series in the time domain. On the contrary in the frequency domain, the GPS and strong-motion time series are consistent for periods larger than 3-4s. Finally the GPS and the strong-motion records were compared in the time-frequency domain based on wavelet analysis, revealing that both GPS and seismic records express consistently the variation of the long-period of the seismic signal. Thus, it is proved that the GPS records can be used for the estimation of the long-period ground motion and contribute to the reliable estimation of the corresponding characteristics (displacement, velocity, acceleration). |
| first_indexed | 2025-11-14T19:25:46Z |
| format | Conference or Workshop Item |
| id | nottingham-35272 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:25:46Z |
| publishDate | 2016 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-352722024-08-15T15:18:41Z https://eprints.nottingham.ac.uk/35272/ Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake Psimoulis, Panos Houlié, Nicolas Clotaire, Michel Meindl, Michel Rothacher, Markus The GPS displacement time series are today mostly used for the estimation of the transient (period <2sec) and coseismic (static) displacement of an earthquake, while the estimation of the velocity and acceleration is based only seismic networks. In this study, we examine whether the GPS records can be used to capture the spectral characteristics of the long-period signal and their consistency with the corresponding seismic motion sensors, for the displacement, velocity and acceleration. For this purpose, we use the 1-Hz GPS network records of the Tohoku-Oki 2011 earthquake processed in Precise Point Positioning (PPP). The derived GPS and strong-motion waveforms were analysed resulting into displacement, velocity and acceleration for periods ranging from 3 to 100s. The derived GPS and strong-motion time series were compared and it was found that these are of similar pattern and amplitude. However, there is a non-constant phase shift between the corresponding GPS and strong-motion time series, resulting in significant difference between the time series in the time domain. On the contrary in the frequency domain, the GPS and strong-motion time series are consistent for periods larger than 3-4s. Finally the GPS and the strong-motion records were compared in the time-frequency domain based on wavelet analysis, revealing that both GPS and seismic records express consistently the variation of the long-period of the seismic signal. Thus, it is proved that the GPS records can be used for the estimation of the long-period ground motion and contribute to the reliable estimation of the corresponding characteristics (displacement, velocity, acceleration). 2016-03-30 Conference or Workshop Item PeerReviewed Psimoulis, Panos, Houlié, Nicolas, Clotaire, Michel, Meindl, Michel and Rothacher, Markus (2016) Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake. In: 3rd Joint International Symposium on Deformation Monitoring, 30 March - 1 Apr 2016, Vienna, Austria. GPS PPP strong-motion waveforms filtering Tohoku-Oki 2011 wavelet spectral analysis http://www.fig.net/resources/proceedings/2016/2016_03_jisdm_pdf/nonreviewed/JISDM_2016_submission_104.pdf |
| spellingShingle | GPS PPP strong-motion waveforms filtering Tohoku-Oki 2011 wavelet spectral analysis Psimoulis, Panos Houlié, Nicolas Clotaire, Michel Meindl, Michel Rothacher, Markus Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake |
| title | Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake |
| title_full | Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake |
| title_fullStr | Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake |
| title_full_unstemmed | Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake |
| title_short | Analysis of 1-Hz GPS data for the estimation of long-period surface motion of Tohoku-Oki Mw9.0 2011 earthquake |
| title_sort | analysis of 1-hz gps data for the estimation of long-period surface motion of tohoku-oki mw9.0 2011 earthquake |
| topic | GPS PPP strong-motion waveforms filtering Tohoku-Oki 2011 wavelet spectral analysis |
| url | https://eprints.nottingham.ac.uk/35272/ https://eprints.nottingham.ac.uk/35272/ |