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Zhe Ding is a Master's student of the School of Geomatics Science and Technology in Nanjing Tech University, Nanjing, China. His research interest focuses on earthquake deformation, utilizing interferometric synthetic aperture radar.
Xin Wang is a Ph.D. student in Geophysics at the School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China. His research focuses on earthquake deformation and fault mechanics, utilizing interferometric synthetic aperture radar (InSAR) to investigate crustal deformation processes and seismic hazards in tectonically active regions.
Shuai Wang received the M.S. degree in geodesy and surveying engineering from the College of Geological Engineering and Geomatics, Chang'an University, Xi'an, China, in 2015, and the Ph.D. degree in geodesy and surveying engineering from the School of Geodesy and Geomatics, Wuhan University, Wuhan, China, in 2019. From 2017 to 2018, he worked as a Research Assistant at the Department of Land Surveying and Geo-informatics in The Hong Kong Polytechnic University, Hong Kong, China. From 2019 to 2025/04, he worked at the School of Geomatics Science and Technology in Nanjing Tech University, Nanjing, China. Currently, he holds the position of an Associate Professor at the School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, China. His currently research interests focus on earthquake-cycle deformation and induced deformation caused by industrial activities, utilizing interferometric synthetic aperture radar and Global Navigation Satellite System.
Caijun Xu received the M.S. and Ph.D. degrees from the Wuhan Technical University of Surveying and Mapping Geodesy in 1988 and 1994, respectively. He is currently a specially-appointed Professor in the Cheung Kong Scholars Program at the School of Geodesy and Geomatics, Wuhan University, Wuhan, China. He serves as the deputy director of the Key Laboratory of Geospatial Environment and Geodesy under the Ministry of Education, China, and the deputy director of the Key Laboratory of Geophysical Geodesy and Natural Resources under the Ministry of Natural Resources, China. His ongoing research focuses on studying the tectonic deformation in the Qinghai-Xizang Plateau and its surroundings and investigating human-induced seismic and crustal deformation in the Sichuan Basin through multi-source observations from space geodesy and seismic data.
Limei Wang received the B.S. degree in geomatics engineering from Shandong University of Science and Technology, Qingdao, China, in 2007, and the M.S. degree in photogrammetry and remote sensing from Liaoning Technical University, Fuxin, China, in 2010. She is currently a Lecturer with the School of Surveying and Urban Spatial Information, Henan University of Urban Construction, Pingdingshan 467,000, China. Her research interests include SAR-optical image processing and application, classification, and change detection.
Outline
On 28 March 2025, a shallow devastating strike-slip earthquake with a moment magnitude (MW) of 7.7 struck Mandalay, the second-largest city in Myanmar, marking the most powerful seismic event in this region over the past century. The event holds significant implications for understanding regional tectonic evolution. In this study, we utilize spaceborne interferometric synthetic aperture radar (InSAR) data and pixel offset observations in both azimuth and range directions to capture the co-seismic surface deformations associated with this earthquake, which depict clear surface ruptures extending approximately 500 km. We develop a three-segment fault slip model to estimate the detailed slip distribution of the 2025 Myanmar event. The inversion results demonstrate that a three-segment fault model with dip angles varying from 70° to 88° can effectively produce the observed coseismic surface deformation. Our analysis reveals that the earthquake is dominated by right-lateral strike-slip motions within the top 12 km of the crust. Notably, the maximum slip of 4.6 m is observed at the ground surface, suggesting no significant shallow slip deficit occurred. Furthermore, the 2025 MW7.7 earthquake appears to have filled a previously identified seismic gap along the southern segment of the Sagaing fault. Coulomb stress transfer modeling indicates that coseismic slip on the northern segment has promoted the subsequent failure of the two southern segments. We estimate a recurrence interval of large-magnitude earthquakes (MW > 7) of approximately 104-131 years for the seismogenic fault based on the coseismic and interseismic released seismic moments. The significant scarcity of aftershocks within the supershear rupture zone, coupled with the relatively low moment-scaled radiated energy, provides compelling evidence for supershear rupture propagation along the Sagaing fault during this earthquake.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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