Mapping a Carrington Storm

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2025-10-07 DOI:10.1029/2025gl116835

Jeffrey J. Love, Greg M. Lucas, Anna Kelbert, E. Joshua Rigler, Paul A. Bedrosian, Neesha R. Schnepf

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引用次数: 0

Abstract

A map is presented of median 1-min-resolution peak geoelectric-field strength across the United States as would be induced by magnetic storms as intense as the 2 September 1859 Carrington storm. The map is constructed from two data sets: Magnetometer time series from 22 ground-based observatories recording 40 magnetic storms, and surface impedance tensors derived from magnetotelluric measurements acquired at 1616 survey sites across the contiguous United States. Carrington-class storm geoelectric fields are likely to be very strong in the United States East and Midwest;

> 5.00 ${ >} 5.00$

V/km at many places. In Virginia, strengths would likely range from 30.30 V/km, with a 68% confidence interval of [19.44,47.20] V/km, to as low as 0.05 [0.03,0.07] V/km. Comparison of model geopotentials with those measured on 30 long lines, indicates errors of about 18%. A Carrington-class storm would likely induce geoelectric fields with strengths 55% greater than for the 13–14 March 1989 storm.

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绘制卡灵顿风暴

这张地图显示了美国各地的地电场强度中位数为1分钟分辨率的峰值，这是由1859年9月2日卡灵顿风暴那样强烈的磁暴引起的。该地图由两组数据构成：来自22个地面观测站记录的40次磁暴的磁力计时间序列，以及来自美国相邻1616个测点的大地电磁测量数据的表面阻抗张量。卡灵顿级风暴地电场可能在美国东部和中西部非常强大；>5.00${>} 5.00$ V/km在许多地方。在弗吉尼亚州，强度可能从30.30伏/公里（68%的置信区间为[19.44,47.20]伏/公里）到0.05伏/公里（[0.03,0.07]伏/公里）。将模型地势与30条长线测得的地势进行比较，误差约为18%。卡灵顿级风暴可能会产生比1989年3月13日至14日强55%的地电场。

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.