Development of Super Plasma Bubbles During the 7 September 2017 Geomagnetic Storm Revealed by Coupled GITM-SAMI3 Simulations

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2024-11-14 DOI:10.1029/2024GL112211

Zihan Wang, Shasha Zou, J. D. Huba, Aaron Ridley

引用次数: 0

Abstract

In this study, we used the coupled GITM (Global Ionosphere Thermosphere Model)-SAMI3 (Sami3 is Also a Model of the Ionosphere) model to simulate the response of the ionosphere-thermosphere system during the 7 September 2017 geomagnetic storm. In the simulation results, a super equatorial plasma bubble (SEPB) formed and rose to around $40 °$ magnetic latitude (MLAT). This is attributed to a penetration electric field (PEF) that enhances the growth rate of generalized Rayleigh-Taylor instability (GRTI), while traveling atmospheric/ionospheric disturbances act as a seeding mechanism.

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GITM-SAMI3 耦合模拟揭示的 2017 年 9 月 7 日地磁风暴期间超级等离子体气泡的发展情况

在这项研究中，我们利用耦合 GITM（全球电离层热层模型）-SAMI3（Sami3 也是电离层模型）模型模拟了 2017 年 9 月 7 日地磁风暴期间电离层-热层系统的响应。在模拟结果中，一个超赤道等离子体气泡（SEPB）形成并上升到大约40°$40{}^{\circ}$磁纬（MLAT）。这归因于穿透电场（PEF）提高了广义瑞利-泰勒不稳定性（GRTI）的增长速度，而行进的大气层/电离层扰动则充当了播种机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geophysical Research Letters 地学-地球科学综合

CiteScore

9.00

自引率

9.60%

发文量

1588

审稿时长

2.2 months

期刊介绍： Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.