InSAR- and PCA-based inversion reveals the surface deformation and earthquake sequence in the Weiyuan-Rongxian shale gas field

Simple item page
dc.contributor.authorHuo, Hongyu
dc.contributor.authorXu, Wenbin
dc.contributor.authorXie, Lei
dc.contributor.authorJiang, Kun
dc.contributor.authorJiang, Yan
dc.date.accessioned2024-10-10T17:23:09Z
dc.date.available2024-10-10T17:23:09Z
dc.date.issued2024
dc.description.abstractIn recent years, the rapid expansion and development of the shale gas industry in the Sichuan Basin has coincided with a series of unexpected moderate-sized earthquakes. Given that the Sichuan Basin is situated within a stable interior block, the focal mechanism of the 2019 earthquake sequence (ML4.7, ML5.4, and ML5.2) in the Weiyuan-Rongxian area remains a subject of debate. In this study, we propose a joint InSAR- and PCA- based inversion method utilizing the distributed Mogi model to investigate the spatial-temporal characteristics of a gas reservoir and evaluate the induced Coulomb stress change. The surface deformation derived from Sentinel-1 data between 2015 and 2021 was consistent with the spatial distribution of production wells, and it correlated with the temporal changes in reservoir volume associated with the shale gas operating process. The Coulomb stress loading on the regional faults suggests that human activities associated with shale gas operation likely triggered the three moderate earthquakes. Furthermore, our results indicate Coulomb stress loadings of 10 kPa, 15 kPa, 5 kPa, 3 kPa, and 87 kPa on the Dongxingchang fault, Gaoqiao fault, Dayaokou fault, Niujingao fault, and Lijiachang fold, respectively. Consequently, fluid injection and extraction during shale gas development could be contributing to the elevated seismic activity in the Weiyuan-Rongxian area.
dc.description.reviewstatusReviewed
dc.description.scholarlevelFaculty
dc.description.sponsorshipThis research was funded by National Key Research and Development Program (2022YFB3903602), National Natural Science Foundation of China (42174023, 42304037), National Science Fund for Distinguished Young Scholars (41925016), Frontier Cross Research Project of Central South University (2023QYJC006), and Natural Science Foundation of Hunan Province (2024JJ3031).
dc.identifier.citationHuo, H., Xu, W., Xie, L., Jiang, K., & Jiang, Y. (2024). InSAR- and PCA-based inversion reveals the surface deformation and earthquake sequence in the Weiyuan-Rongxian shale gas field. Remote Sensing, 16(11), Article 11. https://doi.org/10.3390/rs16111929
dc.identifier.urihttps://doi.org/10.3390/rs16111929
dc.identifier.urihttps://hdl.handle.net/1828/20526
dc.language.isoen
dc.publisherRemote Sensing
dc.rightsAttribution CC BY
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.departmentSchool of Earth and Ocean Sciences
dc.titleInSAR- and PCA-based inversion reveals the surface deformation and earthquake sequence in the Weiyuan-Rongxian shale gas field
dc.typeArticle

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
huo_hongyu_remoteSens_2024.pdf
Size:
4.03 MB
Format:
Adobe Portable Document Format
Download

Collections

Faculty and Staff Publications
 
University of Victoria Libraries

We acknowledge and respect the Lək̓ʷəŋən (Songhees and Esquimalt) Peoples on whose territory the university stands, and the Lək̓ʷəŋən and W̱SÁNEĆ Peoples whose historical relationships with the land continue to this day.