The Penetration Electric Fields During the 10 May 2024 Superstorm Observed by ISRs Over Sanya and Jicamarca

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Geophysical Research Letters Pub Date : 2025-03-19 DOI:10.1029/2024GL114543

Ruilong Zhang, Libo Liu, Xinan Yue, Jiaojiao Zhang, Ning Zhang, Yiding Chen, Huijun Le, Wenbo Li

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Abstract

We used the incoherent scatter radar observations at Sanya (18.3°N, 109.6°E) and Jicamarca (11.9°S, 76.9°W) to analyze the day-night difference of penetration electric fields during the 10 May 2024 superstorm. The dawn-dusk electric field penetrated into the night ionosphere more efficiency, and the night-to-day penetration ratio was ∼2. Specially, the zonal electric field became westward in the post-midnight, while it did not change significantly in the afternoon in response to the IMF-Bz southward turning at 17:45–18:25 UT and 19:30–22:30 UT. These indicated that the penetration electric field was rapidly and long-lastingly canceled by shielding electric field, which had rarely been reported. In this period, the enhanced Region-2 field-aligned current shifted to mid-latitudes and the enhanced sunward convection penetrated to low-latitudes, indicating the shielding layer might closely move to Earth. Under this condition, the shielding layer would promptly reconfigure to cancel the penetration electric field and lead to the perfect shielding.

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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.