机构

• 高能物理研究所 [1]
• 武汉岩土力学研究所 [1]

采集方式

• OAI收割 [2]

内容类型

• 期刊论文 [2]

发表日期

• 2022 [1]
• 2021 [1]

学科主题

• Mechanics [1]

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Multifracture initiation from a series of noncircular convex wellbores 期刊论文  OAI收割 ENGINEERING FRACTURE MECHANICS, 2022, 卷号: 276, 期号: -, 页码: - 作者:  Zhou, Zai-Le;  Guo, Yin-Tong;  Zhang, Xi;  Huang, Guang-Tan   |  收藏  |  浏览/下载：9/0  |  提交时间：2023/08/02 Dual criterion  Initiation location  Initiation pressure  Convex wellbore  High tortuosity of fracture   On the Terrestrial Gamma Ray Flashes Preceding Narrow Bipolar Events 期刊论文  OAI收割 Geophysical Research Letters, 2021, 卷号: 48, 页码: e92160 作者:  HXMT   |  收藏  |  浏览/下载：24/0  |  提交时间：2022/02/08 low frequency magnetic sferics  narrow bipolar events (NBEs)  relativistic feedback mechanism  Terrestrial Gamma ray Flashes (TGFs)  Abstract: Narrow bipolar events (NBEs) are occasionally reported to occur within a few ms after Terrestrial Gamma ray Flashes (TGFs), while the formation mechanism remains mysterious partially due to the lack of sufficient observations. Here, nine more TGFs of this scenario are reported with concurrent LF sferics and lightning location data. The gamma ray production in these TGFs preceded the occurrence of NBEs by a minimum of 60 µs up to 13.5 ms, and no other fast leader discharge was found within 20 ms before the TGF. The TGF preceded positive NBEs occurred at altitudes of 8.6-11 km in thunderstorms, likely in the high electric field (E field) region of lightning initiation. The analyses show that the NBE preceding TGFs bear harder energy spectrum with larger proportion of high energy photons than EIP related TGFs produced in association with lightning leader. Our findings support the relativistic feedback mechanism of gamma ray generation in the large scale thunderstorm E field.