Full
SUN Guodong, engineer, majors in earthquake monitoring and warning, E-mail: 447398500@qq.com
Outline
This article adopts the double-difference tomography method to obtain the three-dimensional P-wave velocity structure and seismic relocating results of the Wushan section in the Three Gorges reservoir, based on the travel time data of 2 319 earthquakes recorded by 49 stations from January 2008 to June 2020. The results show that earthquakes are mainly concentrated on the north bank of the Yangtze river, with a nearly EW oriented strip distribution, and are not more than 10 km away from the Yangtze river system. There are two obvious P-wave high-speed bodies concentrated mainly at the intersection of the Yangtze river and the faults in the research area. One is distributed in the area trapped by the Gaoqiao fault and the Zhoujiashan-Niukou fault, and the other is distributed in the area where the Wushan fault intersects with the Yangtze river. The distribution of high-speed bodies is consistent with the dip of nearby faults. The velocity cross-section shows that the high-speed zone extends to a depth of 12 km. The Wushan fault, Gaoqiao fault, and Zhoujiashan-Niukou fault serve as the main fracture channels for reservoir water infiltration.
32
13
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
