Sporadic-E Layer Responses to Super Geomagnetic Storm 10-12 May 2024

被引：0

作者：

Qiu, Lihui ^{[1
]}

Liu, Huixin ^{[2
]}

机构：

[1] Kyushu Univ, Int Res Ctr Space & Planetary Environm Sci I SPES, Fukuoka, Japan

[2] Kyushu Univ, Dept Earth & Planetary Sci, Fukuoka, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2025年 / 52卷 / 08期

基金：

日本学术振兴会;

关键词：

geomagnetic storm; sporadic-E; ionosonde observations; COSMIC-2; observations; ionospheric-E region; ELECTRIC-FIELDS; LOW LATITUDES; DISTURBANCE; WINDS; IONOSPHERE;

D O I：

10.1029/2025GL115154

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Sporadic E (Es) layer plays a prominent role in revealing both upward and downward atmosphere-ionosphere coupling process. This study investigates the responses of Es layers to the May 2024 super geomagnetic storm by using 37 ground-based ionosondes distributed globally and space-based COSMIC-2 radio occultation observations. The results show that Es layers were significantly enhanced during the recovery phase of geomagnetic storm. In addition, the enhanced Es layers mainly occurred over Southeast Asia, Australia, the South Pacific and the East Pacific. The temporal evolution of foEs disturbances over the Asian-Australian sector clearly shows the "wave propagation" characteristics from high to low latitudes, indicating that the enhancements of the Es layers are most likely caused by the disturbed neutral winds in the E region. This study presents observational evidence for the downward impacts of the geomagnetic storm on the E-region ionosphere.

引用

页数：7

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