Detection of Different Properties of Ionospheric Perturbations in the Vicinity of the Korean Peninsula After the Hunga‐Tonga Volcanic Eruption on 15 January 2022

Detection of Different Properties of Ionospheric Perturbations in the Vicinity of the Korean Peninsula After the Hunga‐Tonga Volcanic Eruption on 15 January 2022
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2022 年 1 月 15 日洪加汤加火山喷发后朝鲜半岛附近电离层扰动的不同特性的检测

DOI:
10.1029/2022gl099163
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发表时间:
2022
影响因子:
5.2
通讯作者:
Paxton, Larry J.
Paxton, Larry J.
中科院分区:
地球科学1区
文献类型:
--
作者:
Hong, Junseok;Kil, Hyosub;Lee, Woo Kyoung;Kwak, Young‐Sil;Choi, Byung‐Kyu;Paxton, Larry J.

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本研究报告了2022年1月15日兴汤加火山爆发后在朝鲜半岛西部和南部探测到的电离层扰动的不同特性。在喷发后约8小时,在朝鲜半岛西部和南部分别检测到瞬态波状总电子含量(TEC)调制和强烈的不规则TEC扰动。西部的TEC调制以302米/秒的速度从震中传播出去。它们的发生时间、传播方向和速度以及与地表气压扰动的对齐表明,火山喷发产生的兰姆波产生了TEC调制。赤道等离子体气泡(EPBs)向极地延伸解释了南半球强烈的TEC扰动和L波段闪烁。我们利用Swarm卫星数据得出的EPB发生气候学证明了EPB与火山爆发的关联。
This study reports different properties of ionospheric perturbations detected to the west and south of the Korean Peninsula after the Hunga‐Tonga volcanic eruption on 15 January 2022. Transient wave‐like total electron content (TEC) modulations and intense irregular TEC perturbations are detected in the west and south of the Korean Peninsula, respectively, about 8 hr after the eruption. The TEC modulations in the west propagate away from the epicenter with a speed of 302 m/s. Their occurrence time, propagation direction and velocity, and alignment with the surface air pressure perturbations indicate the generation of the TEC modulations by Lamb waves generated by the eruption. The strong TEC perturbations and L band scintillations in the south are interpreted in terms of the poleward extension of equatorial plasma bubbles (EPBs). We demonstrate the association of the EPBs with the volcanic eruption using the EPB occurrence climatology derived from Swarm satellite data.
DOI: 10.1029/2020ja028343
发表时间: 2020-09
期刊: Journal of geophysical research. Space physics
影响因子: --
作者:
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