Double-difference tomography in the Qinling orogenic belt and its adjacent areas
The Qinling orogenic belt and its adjacent areas serve as the convergence zone between the North China craton, the Yangtze craton, and the northeastern edge of the Qinghai-Xizang Plateau are characterized by complex tectonic activity. This study utilizes observational data from 159 fixed stations of...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Progress in Earthquake Sciences
2025-05-01
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| Series: | 地震科学进展 |
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| Online Access: | https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2024-163 |
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| author | Yuchen Xiao Shaoxing Hui Kai Ma Yaning Liu |
| author_facet | Yuchen Xiao Shaoxing Hui Kai Ma Yaning Liu |
| author_sort | Yuchen Xiao |
| collection | DOAJ |
| description | The Qinling orogenic belt and its adjacent areas serve as the convergence zone between the North China craton, the Yangtze craton, and the northeastern edge of the Qinghai-Xizang Plateau are characterized by complex tectonic activity. This study utilizes observational data from 159 fixed stations of the China Earthquake Administration in Shaanxi, Sichuan, Gansu, and other regions, as well as 182 broadband mobile stations from the ChinArray Ⅱ project. We obtained a three-dimensional velocity structure of the Qinling orogenic belt and its adjacent areas by employing the double-difference tomography method. The imaging results reveal that the crustal thickness of the Hanzhong basin is approximately 38 km, and the Moho interface exhibits a dome-like shape, convex in the center and concave on both sides. Additionally, a significant low-velocity anomaly is observed along the northern edge of the western Qinling orogenic belt and the southern side of the Longxian-Baoji fault zone, extending to a depth of approximately 39 km. This anomaly is associated with the eastward flow of materials from the middle and lower crust of the Qinghai-Xizang Plateau. |
| format | Article |
| id | doaj-art-24e24721ee1f4abb9e8e96dcc75984b8 |
| institution | OA Journals |
| issn | 2096-7780 |
| language | zho |
| publishDate | 2025-05-01 |
| publisher | Editorial Office of Progress in Earthquake Sciences |
| record_format | Article |
| series | 地震科学进展 |
| spelling | doaj-art-24e24721ee1f4abb9e8e96dcc75984b82025-08-20T01:50:49ZzhoEditorial Office of Progress in Earthquake Sciences地震科学进展2096-77802025-05-0155524925810.19987/j.dzkxjz.2024-1632024-163Double-difference tomography in the Qinling orogenic belt and its adjacent areasYuchen Xiao0Shaoxing Hui1Kai Ma2Yaning Liu3Shaanxi Earthquake Agency, Shaanxi Xi’an 710068, ChinaShaanxi Earthquake Agency, Shaanxi Xi’an 710068, ChinaShaanxi Earthquake Agency, Shaanxi Xi’an 710068, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaThe Qinling orogenic belt and its adjacent areas serve as the convergence zone between the North China craton, the Yangtze craton, and the northeastern edge of the Qinghai-Xizang Plateau are characterized by complex tectonic activity. This study utilizes observational data from 159 fixed stations of the China Earthquake Administration in Shaanxi, Sichuan, Gansu, and other regions, as well as 182 broadband mobile stations from the ChinArray Ⅱ project. We obtained a three-dimensional velocity structure of the Qinling orogenic belt and its adjacent areas by employing the double-difference tomography method. The imaging results reveal that the crustal thickness of the Hanzhong basin is approximately 38 km, and the Moho interface exhibits a dome-like shape, convex in the center and concave on both sides. Additionally, a significant low-velocity anomaly is observed along the northern edge of the western Qinling orogenic belt and the southern side of the Longxian-Baoji fault zone, extending to a depth of approximately 39 km. This anomaly is associated with the eastward flow of materials from the middle and lower crust of the Qinghai-Xizang Plateau.https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2024-163double-difference tomographyqinling orogenic belthanzhong basincrustal velocity structure |
| spellingShingle | Yuchen Xiao Shaoxing Hui Kai Ma Yaning Liu Double-difference tomography in the Qinling orogenic belt and its adjacent areas 地震科学进展 double-difference tomography qinling orogenic belt hanzhong basin crustal velocity structure |
| title | Double-difference tomography in the Qinling orogenic belt and its adjacent areas |
| title_full | Double-difference tomography in the Qinling orogenic belt and its adjacent areas |
| title_fullStr | Double-difference tomography in the Qinling orogenic belt and its adjacent areas |
| title_full_unstemmed | Double-difference tomography in the Qinling orogenic belt and its adjacent areas |
| title_short | Double-difference tomography in the Qinling orogenic belt and its adjacent areas |
| title_sort | double difference tomography in the qinling orogenic belt and its adjacent areas |
| topic | double-difference tomography qinling orogenic belt hanzhong basin crustal velocity structure |
| url | https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2024-163 |
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