Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.06.012 |
Ground level gamma-ray and electric field enhancements during disturbed weather: Combined signatures from convective clouds, lightning and rain | |
Reuveni, Yuval1,2,3; Yair, Yoav3; Price, Colin4; Steinitz, Gideon5 | |
2017-11-01 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 196 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | We report coincidences of ground-level gamma-ray enhancements with precipitation events and strong electric fields typical of thunderstorms, measured at the Emilio Segre Cosmic Ray observatory located on the western slopes of Mt. Hermon in northern Israel. The observatory hosts 2 x 2 '' Nal(TI) gamma ray scintillation detectors alongside a vertical atmospheric electric field (E-z) mill and conduction current (J(z)) plates. During several active thunderstorms that occurred near the Mt. Hermon station in October and November 2015, we recorded prolonged periods of gamma ray enhancements, which lasted tens of minutes and coincided with peaks both in precipitation and the vertical electric field. Two types of events were detected: slow increase (up to similar to 300 min) of atmospheric gamma ray radiation due to radon progeny washout (or rainout) along with minutes of E-z enhancement, which were not associated with the occurrences of nearby CG lightning discharges. The second type showed 30 min bursts of gamma rays, coinciding with minutes of E-z enhancement that closely matched the occurrences of nearby CG lightning discharges, and are superimposed on the radiation from radon daughters washed out to near surface levels by precipitation. We conclude that a superposition of accelerated high energy electrons by thunderstorm electric fields and radon progeny washout (or rainout) explains the relatively fast near surface gamma-ray increase, where the minutes-scale vertical electric field enhancement are presumably caused due to nearby convective clouds. Our results show that the mean exponential half-life depletion times of the residual nuclei produced during events without lightning occurrences were between similar to 25-65 min, compared to similar to 55-100 min when lightning was present, indicating that different types of nuclei were involved. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409290200013 |
WOS关键词 | PRECIPITATION ; PROGENY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38320 |
专题 | 地球科学 |
作者单位 | 1.Ariel Univ, Dept Mech Engn & Mechatron, Ariel, Israel; 2.Eastern R&D Ctr, Ariel, Israel; 3.Interdisciplinary Ctr IDC Herzliya, Sch Sustainabil, Herzliyya, Israel; 4.Tel Aviv Univ, Dept Geosci, Ramat Aviv, Israel; 5.Geol Survey Israel, Jerusalem, Israel |
推荐引用方式 GB/T 7714 | Reuveni, Yuval,Yair, Yoav,Price, Colin,et al. Ground level gamma-ray and electric field enhancements during disturbed weather: Combined signatures from convective clouds, lightning and rain[J]. ATMOSPHERIC RESEARCH,2017,196. |
APA | Reuveni, Yuval,Yair, Yoav,Price, Colin,&Steinitz, Gideon.(2017).Ground level gamma-ray and electric field enhancements during disturbed weather: Combined signatures from convective clouds, lightning and rain.ATMOSPHERIC RESEARCH,196. |
MLA | Reuveni, Yuval,et al."Ground level gamma-ray and electric field enhancements during disturbed weather: Combined signatures from convective clouds, lightning and rain".ATMOSPHERIC RESEARCH 196(2017). |
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