On the F-Region Ionospheric Plasma Density Distribution and Irregularities Response During the May-2024 Geomagnetic Storm Observed by LEO Satellites

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2025-05-12 DOI:10.1029/2025GL115780

S. K. Das, C. Stolle, Y. Yamazaki, J. Rodríguez-Zuluaga, X. Wan, G. Kervalishvili, J. Rauberg, J. Zhong, S. Perwitasari

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Abstract

This study investigates the F-region plasma density and irregularities response during the May-2024 storm using Swarm and Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) data. Swarm-B provided measurements at 11/23 LTs. Data from GRACE-FO and Swarm-A were collected at 05/17 and 07/19 LTs. Following the storm's commencement on May 10, the equatorial ionization anomaly (EIA) was particularly strong (depleted) on the dayside (nightside). An intensification of the EIA was observed during the early morning 05/07 LTs. Variability during the storm's initial and recovery phases indicate the strong influence of electric fields and thermospheric winds. The magnitude of the EIA was greater during the Halloween storm, but the EIA's relative variabilities were of similar order. Equatorial plasma depletion (EPD) was observed, with apex altitudes reaching $\sim$ 5,000 km before midnight on May 11 and $\sim$ 3,400 km in the early morning. We suggest that the morning EPDs are generated after mid-night rather than being remnants from the previous evening.

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近地轨道卫星观测5 -2024年地磁风暴f区电离层等离子体密度分布及不规则响应

本文利用GRACE-FO （Swarm and Gravity Recovery and Climate Experiment Follow-On）数据研究了2024年5月风暴期间f区等离子体密度和不规则响应。Swarm-B提供了11/23 lt的测量结果。GRACE-FO和Swarm-A的数据分别于2017年5月和2019年7月收集。在5月10日风暴开始后，赤道电离异常（EIA）在昼侧（夜侧）特别强（耗尽）。在05/07 lt的清晨观察到环境影响评估的强化。风暴初始和恢复阶段的变化表明电场和热层风的强烈影响。在万圣节风暴期间，EIA的强度更大，但EIA的相对变异性也差不多。观测到赤道等离子体耗竭（EPD）， 5月11日午夜前顶点高度达到~ ${\sim} $ 5,000 km，凌晨达到~ ${\sim} $ 3,400 km。我们认为早晨的环境污染指数是在午夜之后产生的，而不是前一天晚上的残留。

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.