Baseline correction for near-fault ground motion recordings of the 2008 Wenchuan Ms8.0 earthquake
In this study, both records of a digital accelerometer and a seismograph at a far-field station for the 2008 Ms8.0 Wenchuan earthquake were analyzed, and a pulsive noise model for acceleration record was found. By comparing with the result of a rotary-table tilt test, we concluded that the noises in...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2012-05-01
|
| Series: | Geodesy and Geodynamics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984715301208 |
| _version_ | 1818652057080430592 |
|---|---|
| author | Li Heng Wu Jianchao Yao Yunsheng Qin Xiaojun |
| author_facet | Li Heng Wu Jianchao Yao Yunsheng Qin Xiaojun |
| author_sort | Li Heng |
| collection | DOAJ |
| description | In this study, both records of a digital accelerometer and a seismograph at a far-field station for the 2008 Ms8.0 Wenchuan earthquake were analyzed, and a pulsive noise model for acceleration record was found. By comparing with the result of a rotary-table tilt test, we concluded that the noises in the acceleration records were caused by ground tilt as a result of rotational ground motion. We analyzed the key noises that may cause baseline offset, and proposed a baseline-correction scheme for preserving the long-period ground motion in accordance with specific pulse positions. We then applied this correction method to some near-field strong-motion acceleration records. The result shows that this method can obtain near-field ground displacements, including permanent displacements, in agreement with GPS data, and that this method is more stable than other methods. |
| first_indexed | 2024-12-17T02:15:57Z |
| format | Article |
| id | doaj.art-e5811b884e224cc9855d1083beffc69b |
| institution | Directory Open Access Journal |
| issn | 1674-9847 |
| language | English |
| last_indexed | 2024-12-17T02:15:57Z |
| publishDate | 2012-05-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj.art-e5811b884e224cc9855d1083beffc69b2022-12-21T22:07:25ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472012-05-0132607010.3724/SP.J.1246.2012.00060Baseline correction for near-fault ground motion recordings of the 2008 Wenchuan Ms8.0 earthquakeLi Heng0Wu Jianchao1Yao Yunsheng2Qin Xiaojun3Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuha 430071, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuha 430071, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuha 430071, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuha 430071, ChinaIn this study, both records of a digital accelerometer and a seismograph at a far-field station for the 2008 Ms8.0 Wenchuan earthquake were analyzed, and a pulsive noise model for acceleration record was found. By comparing with the result of a rotary-table tilt test, we concluded that the noises in the acceleration records were caused by ground tilt as a result of rotational ground motion. We analyzed the key noises that may cause baseline offset, and proposed a baseline-correction scheme for preserving the long-period ground motion in accordance with specific pulse positions. We then applied this correction method to some near-field strong-motion acceleration records. The result shows that this method can obtain near-field ground displacements, including permanent displacements, in agreement with GPS data, and that this method is more stable than other methods.http://www.sciencedirect.com/science/article/pii/S1674984715301208strong ground motionbaseline correctionpermanent displacementrotational motiontilt |
| spellingShingle | Li Heng Wu Jianchao Yao Yunsheng Qin Xiaojun Baseline correction for near-fault ground motion recordings of the 2008 Wenchuan Ms8.0 earthquake Geodesy and Geodynamics strong ground motion baseline correction permanent displacement rotational motion tilt |
| title | Baseline correction for near-fault ground motion recordings of the 2008 Wenchuan Ms8.0 earthquake |
| title_full | Baseline correction for near-fault ground motion recordings of the 2008 Wenchuan Ms8.0 earthquake |
| title_fullStr | Baseline correction for near-fault ground motion recordings of the 2008 Wenchuan Ms8.0 earthquake |
| title_full_unstemmed | Baseline correction for near-fault ground motion recordings of the 2008 Wenchuan Ms8.0 earthquake |
| title_short | Baseline correction for near-fault ground motion recordings of the 2008 Wenchuan Ms8.0 earthquake |
| title_sort | baseline correction for near fault ground motion recordings of the 2008 wenchuan ms8 0 earthquake |
| topic | strong ground motion baseline correction permanent displacement rotational motion tilt |
| url | http://www.sciencedirect.com/science/article/pii/S1674984715301208 |
| work_keys_str_mv | AT liheng baselinecorrectionfornearfaultgroundmotionrecordingsofthe2008wenchuanms80earthquake AT wujianchao baselinecorrectionfornearfaultgroundmotionrecordingsofthe2008wenchuanms80earthquake AT yaoyunsheng baselinecorrectionfornearfaultgroundmotionrecordingsofthe2008wenchuanms80earthquake AT qinxiaojun baselinecorrectionfornearfaultgroundmotionrecordingsofthe2008wenchuanms80earthquake |