Intense Equatorial Electrojet and Counter Electrojet Caused by the 15 January 2022 Tonga Volcanic Eruption: Space‐ and Ground‐Based Observations
Intense Equatorial Electrojet and Counter Electrojet Caused by the 15 January 2022 Tonga Volcanic Eruption: Space‐ and Ground‐Based Observations
复制标题
2022 年 1 月 15 日汤加火山喷发引起的强烈赤道电射流和反电射流:基于太空和地面的观测
DOI:
10.1029/2022gl099002
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发表时间:
2022
影响因子:
5.2
通讯作者:
Englert, Christoph R.
中科院分区:
文献类型:
--
作者:
Le, Guan;Liu, Guiping;Yizengaw, Endawoke;Englert, Christoph R.
We present space‐ and ground‐based multi‐instrument observations demonstrating the impact of the 2022 Tonga volcanic eruption on dayside equatorial electrodynamics. A strong counter electrojet (CEJ) was observed by Swarm and ground‐based magnetometers on 15 January after the Tonga eruption and during the recovery phase of a moderate geomagnetic storm. Swarm also observed an enhanced equatorial electrojet (EEJ) preceding the CEJ in the previous orbit. The observed EEJ and CEJ exhibited complex spatiotemporal variations. We combine them with the Ionospheric Connection Explorer neutral wind measurements to disentangle the potential mechanisms. Our analysis indicates that the geomagnetic storm had minimal impact; instead, a large‐scale atmospheric disturbance propagating eastward from the Tonga eruption site was the most likely driver for the observed intensification and directional reversal of the equatorial electrojet. The CEJ was associated with strong eastward zonal winds in the E‐region ionosphere, as a direct response to the lower atmosphere forcing.
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DOI:
10.1029/2020ja028726
发表时间:
2021
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
--
作者:
Makela, Jonathan J.;Baughman, Matthew;Navarro, Luis A.;Harding, Brian J.;Englert, Christoph. R.;Harlander, John M.;Marr, Kenneth D.;Benkhaldoun, Zouhair;Kaab, Mohamed;Immel, Thomas J.
通讯作者:
Immel, Thomas J.
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
H. Aveiro;C. Denardini;M. Abdu
通讯作者:
M. Abdu
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
K. Simi;S. Thampi;D. Chakrabarty;B. M. Pathan;S. Nayar;T. Pant
通讯作者:
T. Pant
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
E. Yizengaw;M. Moldwin;E. Zesta;M. Magoun;R. Pradipta;C. M. Biouele;A. Rabiu;O. Obrou;Z. Bamba;E. R. Paula
通讯作者:
E. R. Paula
影响因子:
5.2
作者:
Guiping Liu;S. England;Chin S. Lin;N. Pedatella;J. Klenzing;C. Englert;B. Harding;T. Immel;D. Rowland
通讯作者:
D. Rowland