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
复制
发表时间:
2022
影响因子:
5.2
通讯作者:
Englert, Christoph R.
Englert, Christoph R.
中科院分区:
地球科学1区
文献类型:
--
作者:
Le, Guan;Liu, Guiping;Yizengaw, Endawoke;Englert, Christoph R.

文献摘要

参考文献

被引文献

相似文献

我们提出了基于空间和地面的多仪器观测,证明了2022年汤加火山爆发对日侧赤道电动力学的影响。1月15日,在汤加火山爆发后和中等磁暴的恢复阶段,Swarm和地面磁力计观测到了强烈的反电射流(CEJ)。Swarm还在前一轨道的CEJ之前观测到增强的赤道电射流。观测到的EEJ和CEJ表现出复杂的时空变化。我们结合联合收割机与电离层连接探测器中性风测量解开潜在的机制。我们的分析表明,磁暴的影响很小;相反,从汤加火山爆发地点向东传播的大规模大气扰动是观察到的赤道电射流增强和方向逆转的最可能驱动因素。CEJ与E区电离层的强东向纬向风有关,是对低层大气强迫的直接响应。
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.
ICON–MIGHTI 热层风观测的验证: 1. 夜间红色–线地面–基于法布里–珀罗干涉仪
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
DOI: --
发表时间: 2021
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