Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS data
The April 25, 2015 Mw7.8 Nepal earthquake was successfully recorded by Crustal Movement Observation Network of China (CMONOC) and Nepal Geodetic Array (NGA). We processed the high-rate GPS data (1 Hz and 5 Hz) by using relative kinematic positioning and derived dynamic ground motions caused by this...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2017-07-01
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| Series: | Geodesy and Geodynamics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984716300945 |
| _version_ | 1818339072717881344 |
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| author | Yong Huang Shaomin Yang Xuejun Qiao Mu Lin Bin Zhao Kai Tan |
| author_facet | Yong Huang Shaomin Yang Xuejun Qiao Mu Lin Bin Zhao Kai Tan |
| author_sort | Yong Huang |
| collection | DOAJ |
| description | The April 25, 2015 Mw7.8 Nepal earthquake was successfully recorded by Crustal Movement Observation Network of China (CMONOC) and Nepal Geodetic Array (NGA). We processed the high-rate GPS data (1 Hz and 5 Hz) by using relative kinematic positioning and derived dynamic ground motions caused by this large earthquake. The dynamic displacements time series clearly indicated the displacement amplitude of each station was related to the rupture directivity. The stations which located in the direction of rupture propagation had larger displacement amplitudes than others. Also dynamic ground displacement exceeding 5 cm was detected by the GPS station that was 2000 km away from the epicenter. Permanent coseismic displacements were resolved from the near-field high-rate GPS stations with wavelet decomposition-reconstruction method and P-wave arrivals were also detected with S transform method. The results of this study can be used for earthquake rupture process and Earthquake Early Warning studies. |
| first_indexed | 2024-12-13T15:21:12Z |
| format | Article |
| id | doaj.art-2822b72756c8466a9a471687af83eefc |
| institution | Directory Open Access Journal |
| issn | 1674-9847 |
| language | English |
| last_indexed | 2024-12-13T15:21:12Z |
| publishDate | 2017-07-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj.art-2822b72756c8466a9a471687af83eefc2022-12-21T23:40:34ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472017-07-018428529110.1016/j.geog.2017.03.003Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS dataYong Huang0Shaomin Yang1Xuejun Qiao2Mu Lin3Bin Zhao4Kai Tan5Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, 430071, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, 430071, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, 430071, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, 430071, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, 430071, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, 430071, ChinaThe April 25, 2015 Mw7.8 Nepal earthquake was successfully recorded by Crustal Movement Observation Network of China (CMONOC) and Nepal Geodetic Array (NGA). We processed the high-rate GPS data (1 Hz and 5 Hz) by using relative kinematic positioning and derived dynamic ground motions caused by this large earthquake. The dynamic displacements time series clearly indicated the displacement amplitude of each station was related to the rupture directivity. The stations which located in the direction of rupture propagation had larger displacement amplitudes than others. Also dynamic ground displacement exceeding 5 cm was detected by the GPS station that was 2000 km away from the epicenter. Permanent coseismic displacements were resolved from the near-field high-rate GPS stations with wavelet decomposition-reconstruction method and P-wave arrivals were also detected with S transform method. The results of this study can be used for earthquake rupture process and Earthquake Early Warning studies.http://www.sciencedirect.com/science/article/pii/S1674984716300945High-rate GPSMw7.8 Nepal earthquakeDynamic ground motionPermanent coseismic displacementsP-wave arrival detection |
| spellingShingle | Yong Huang Shaomin Yang Xuejun Qiao Mu Lin Bin Zhao Kai Tan Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS data Geodesy and Geodynamics High-rate GPS Mw7.8 Nepal earthquake Dynamic ground motion Permanent coseismic displacements P-wave arrival detection |
| title | Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS data |
| title_full | Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS data |
| title_fullStr | Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS data |
| title_full_unstemmed | Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS data |
| title_short | Measuring ground deformations caused by 2015 Mw7.8 Nepal earthquake using high-rate GPS data |
| title_sort | measuring ground deformations caused by 2015 mw7 8 nepal earthquake using high rate gps data |
| topic | High-rate GPS Mw7.8 Nepal earthquake Dynamic ground motion Permanent coseismic displacements P-wave arrival detection |
| url | http://www.sciencedirect.com/science/article/pii/S1674984716300945 |
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