HR: 0800h
AN: AE31A-0151    [Abstracts]
TI: Transient luminous jets recorded in the Taiwan 2004 TLE campaign
AU: Hsu, R
EM: rrhsu@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Lee, Y
EM: yjlee@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Kuo, C
EM: johnny@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Wang, Y
EM: l2890102@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Tsay, W
EM: dutsay@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Wang, W
EM: c2488125@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Chen, W
EM: c2490403@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Wang, S
EM: yapi@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Chen, A
EM: alfred@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: * Su, H
EM: htsu@phys.ncku.edu.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AU: Lee, L
EM: loulee@narl.org.tw
AF: National Cheng Kung University, Department of Physics, National Cheng Kung University, Tainan, 70148 Taiwan
AB: The gigantic jets were first reported by Su et al. [Su et al., Nature, 423, 974-976, 2003]. After nearly two years in hunting, another gigantic jet was recorded from Lulin observatory (23.47N, 120.87E, 2862m) on June 18, 2004. The newly observed event occurred above a frontal system which was stationed at Anhui province of China about 700km away. This fact indicated that gigantic jets could also occur over land. Moreover, during the 2004 Taiwan TLE campaign, several jet-like TLEs were recorded at Kenting, Taiwan (21.92N,120.85E, 116m) on the night of August 3, 2004. These events occurred over a thunderstorm located at the coast of Guandong province, China about 500km away. The luminous duration of these events lasted for ~200ms, which is shorter than the GJs and the large blue jet observed by Pasko et al [Nature, 416 , 152-154, 2002]. The upper altitude of the jet-like TLEs is ~70km, which is lower than the GJs but is the same as the large blue-jet or the trailing jets of GJs. The luminous structure of these events looks like a fountain in the dark, which is very similar to trailing jets of GJs but is different from that of the large blue jet. In the 2004 TLE campaign, we deployed a high speed ICCD with 4ms time resolution and three NTSC ICCD cameras that were equipped with different filters. In this talk, the temporal evolution of the jets, the associated electromagnetic emissions, and their spectral properties will be presented. Comparisons with the existing theoretical models will also be presented. *Work supported in part by grants from NSPO (93-NSPO(B)-ISUAL-FA09-01) and NSC (NSC93-2112-M-006-007, NSC93-2111-M-006-001) in Taiwan.
DE: 3324 Lightning
DE: 3337 Numerical modeling and data assimilation
DE: 3367 Theoretical modeling
DE: 3304 Atmospheric electricity
SC: Atmospheric and Space Electricity [AE]
MN: 2004 AGU Fall Meeting