Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basin
The application of the pre-stack depth migration (PSDM) method using deep seismic reflection data is still a challenge. In this paper, a deep seismic reflection dataset collected from the Bohai Bay Basin is used to test the applicability of the pre-stack depth migration method. After improving the s...
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| Format: | Article |
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Frontiers Media S.A.
2023-02-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1145095/full |
| _version_ | 1828012035052404736 |
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| author | Xiaofan Deng Hongqiang Li Rui Gao Rui Gao Rui Gao |
| author_facet | Xiaofan Deng Hongqiang Li Rui Gao Rui Gao Rui Gao |
| author_sort | Xiaofan Deng |
| collection | DOAJ |
| description | The application of the pre-stack depth migration (PSDM) method using deep seismic reflection data is still a challenge. In this paper, a deep seismic reflection dataset collected from the Bohai Bay Basin is used to test the applicability of the pre-stack depth migration method. After improving the signal-to-noise ratio of the prestack gathers and building an accurate velocity model capturing lateral and vertical variations, a high-quality pre-stack depth migration profile is obtained. This profile shows detailed crustal structures and an undulating Moho. The depth difference between the east and west sides of the Moho imaged in the profile is about 6 km. The Moho is disrupted by several discontinuities. Compared with conventionally stacked time-migration profiles, the pre-stack depth migration profile provides a higher-resolution subsurface image with accurate depth information. Combining geological and geophysical data, the pre-stack depth migration profile reveals geologic structures responsible for crust thinning during the destruction of the North China Craton. The profile also provides more accurate depth domain information for further study of crust-mantle interaction in this area. |
| first_indexed | 2024-04-10T09:24:15Z |
| format | Article |
| id | doaj.art-57a5361799cc4f80bd03e63cf2594ce1 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T09:24:15Z |
| publishDate | 2023-02-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Earth Science |
| spelling | doaj.art-57a5361799cc4f80bd03e63cf2594ce12023-02-20T06:49:15ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-02-011110.3389/feart.2023.11450951145095Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basinXiaofan Deng0Hongqiang Li1Rui Gao2Rui Gao3Rui Gao4School of Earth Sciences and Engineering, Sun Yat-Sen University, Guangzhou, ChinaKey Laboratory of Deep Earth Sciences and Technology of Ministry of Natural Resource, Chinese Academy of Geological Sciences, Beijing, ChinaSchool of Earth Sciences and Engineering, Sun Yat-Sen University, Guangzhou, ChinaKey Laboratory of Deep Earth Sciences and Technology of Ministry of Natural Resource, Chinese Academy of Geological Sciences, Beijing, ChinaInstitute of Geology, Chinese Academy of Geological Sciences, Beijing, ChinaThe application of the pre-stack depth migration (PSDM) method using deep seismic reflection data is still a challenge. In this paper, a deep seismic reflection dataset collected from the Bohai Bay Basin is used to test the applicability of the pre-stack depth migration method. After improving the signal-to-noise ratio of the prestack gathers and building an accurate velocity model capturing lateral and vertical variations, a high-quality pre-stack depth migration profile is obtained. This profile shows detailed crustal structures and an undulating Moho. The depth difference between the east and west sides of the Moho imaged in the profile is about 6 km. The Moho is disrupted by several discontinuities. Compared with conventionally stacked time-migration profiles, the pre-stack depth migration profile provides a higher-resolution subsurface image with accurate depth information. Combining geological and geophysical data, the pre-stack depth migration profile reveals geologic structures responsible for crust thinning during the destruction of the North China Craton. The profile also provides more accurate depth domain information for further study of crust-mantle interaction in this area.https://www.frontiersin.org/articles/10.3389/feart.2023.1145095/fulldeep seismic reflection profilePSDMcrustal structure in depth domainlateral and vertical velocity changescraton structure |
| spellingShingle | Xiaofan Deng Hongqiang Li Rui Gao Rui Gao Rui Gao Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basin Frontiers in Earth Science deep seismic reflection profile PSDM crustal structure in depth domain lateral and vertical velocity changes craton structure |
| title | Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basin |
| title_full | Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basin |
| title_fullStr | Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basin |
| title_full_unstemmed | Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basin |
| title_short | Depth migration of crustal-scale seismic reflection profiles: A case study in the Bohai Bay basin |
| title_sort | depth migration of crustal scale seismic reflection profiles a case study in the bohai bay basin |
| topic | deep seismic reflection profile PSDM crustal structure in depth domain lateral and vertical velocity changes craton structure |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1145095/full |
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