Reliability analysis of component strain and volume strain at Dongping seismic station and comparison of influence of special events
In this paper, the reliability analysis of the YRY-4 borehole component strain observation data at Dongping seismic station is carried out through the four-component self-check and the relative calibration internal accuracy analysis. The data of the two instruments are compared by combining the slid...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Progress in Earthquake Sciences
2023-02-01
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| Series: | 地震科学进展 |
| Subjects: | |
| Online Access: | https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-080 |
| _version_ | 1797859012888231936 |
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| author | Fangfang Xu Chenglin Zhu Yuan Jia Shuangling Lu |
| author_facet | Fangfang Xu Chenglin Zhu Yuan Jia Shuangling Lu |
| author_sort | Fangfang Xu |
| collection | DOAJ |
| description | In this paper, the reliability analysis of the YRY-4 borehole component strain observation data at Dongping seismic station is carried out through the four-component self-check and the relative calibration internal accuracy analysis. The data of the two instruments are compared by combining the sliding correlation calculation and the internal accuracy of the tidal factor. It is proved that the two surface strain correlation of the YRY-4 borehole component strain is high, and the correlation coefficient is close to 1. The relative calibration internal accuracy is high, which is consistent with the overall trend of the volume strain data. The observation environment of the two instruments is consistent, and the operation is stable, the data are normal and reliable. However, there are also inconsistencies in the curves of rainfall and site interference in special periods. For the two special cases, compared by correlation calculation and S transform, the results show that, due to the large difference in drilling conditions, the correlation between the two instrument data during rainfall period is poor, close to 0. During the site interference period, the two observation systems were affected, and the interference signals appeared synchronously in the frequency domain, which affected the data curve shape and the accuracy of the tidal factor, but the strain correlation between the two instruments reached 0.91 during the interference period. Comprehensive analysis shows that the two sets of instrument observation systems of component strain and volume strain at Dongping seismic station are reliable and stable. |
| first_indexed | 2024-04-09T21:23:41Z |
| format | Article |
| id | doaj.art-4fcf8b70c29044ca9f6a0f66ac4e8eb9 |
| institution | Directory Open Access Journal |
| issn | 2096-7780 |
| language | zho |
| last_indexed | 2024-04-09T21:23:41Z |
| publishDate | 2023-02-01 |
| publisher | Editorial Office of Progress in Earthquake Sciences |
| record_format | Article |
| series | 地震科学进展 |
| spelling | doaj.art-4fcf8b70c29044ca9f6a0f66ac4e8eb92023-03-28T03:00:15ZzhoEditorial Office of Progress in Earthquake Sciences地震科学进展2096-77802023-02-01532869210.19987/j.dzkxjz.2022-0802022-080Reliability analysis of component strain and volume strain at Dongping seismic station and comparison of influence of special eventsFangfang Xu0Chenglin Zhu1Yuan Jia2Shuangling Lu3Shandong Earthquake Agency, Shandong Ji’nan 250014, ChinaShandong Earthquake Agency, Shandong Ji’nan 250014, ChinaShandong Earthquake Agency, Shandong Ji’nan 250014, ChinaShandong Earthquake Agency, Shandong Ji’nan 250014, ChinaIn this paper, the reliability analysis of the YRY-4 borehole component strain observation data at Dongping seismic station is carried out through the four-component self-check and the relative calibration internal accuracy analysis. The data of the two instruments are compared by combining the sliding correlation calculation and the internal accuracy of the tidal factor. It is proved that the two surface strain correlation of the YRY-4 borehole component strain is high, and the correlation coefficient is close to 1. The relative calibration internal accuracy is high, which is consistent with the overall trend of the volume strain data. The observation environment of the two instruments is consistent, and the operation is stable, the data are normal and reliable. However, there are also inconsistencies in the curves of rainfall and site interference in special periods. For the two special cases, compared by correlation calculation and S transform, the results show that, due to the large difference in drilling conditions, the correlation between the two instrument data during rainfall period is poor, close to 0. During the site interference period, the two observation systems were affected, and the interference signals appeared synchronously in the frequency domain, which affected the data curve shape and the accuracy of the tidal factor, but the strain correlation between the two instruments reached 0.91 during the interference period. Comprehensive analysis shows that the two sets of instrument observation systems of component strain and volume strain at Dongping seismic station are reliable and stable.https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-080component borehole strainvolume strainreliability analysisspecial eventsrainfall interferencesite interference |
| spellingShingle | Fangfang Xu Chenglin Zhu Yuan Jia Shuangling Lu Reliability analysis of component strain and volume strain at Dongping seismic station and comparison of influence of special events 地震科学进展 component borehole strain volume strain reliability analysis special events rainfall interference site interference |
| title | Reliability analysis of component strain and volume strain at Dongping seismic station and comparison of influence of special events |
| title_full | Reliability analysis of component strain and volume strain at Dongping seismic station and comparison of influence of special events |
| title_fullStr | Reliability analysis of component strain and volume strain at Dongping seismic station and comparison of influence of special events |
| title_full_unstemmed | Reliability analysis of component strain and volume strain at Dongping seismic station and comparison of influence of special events |
| title_short | Reliability analysis of component strain and volume strain at Dongping seismic station and comparison of influence of special events |
| title_sort | reliability analysis of component strain and volume strain at dongping seismic station and comparison of influence of special events |
| topic | component borehole strain volume strain reliability analysis special events rainfall interference site interference |
| url | https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-080 |
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