High‐Frequency Communications Response to Solar Activity in September 2017 as Observed by Amateur Radio Networks

High‐Frequency Communications Response to Solar Activity in September 2017 as Observed by Amateur Radio Networks
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业余无线电网络观测到的 2017 年 9 月太阳活动高频通信响应

DOI:
10.1029/2018sw002008
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发表时间:
2019
期刊:
影响因子:
3.7
通讯作者:
Bortnik, Jacob
Bortnik, Jacob
中科院分区:
地球科学1区
文献类型:
--
作者:
Frissell, Nathaniel A.;Vega, Joshua S.;Markowitz, Evan;Gerrard, Andrew J.;Engelke, William D.;Erickson, Philip J.;Miller, Ethan S.;Luetzelschwab, R. Carl;Bortnik, Jacob

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2017年9月4日至14日,与太阳活动区AR 12673相关的大量太阳耀斑和日冕物质抛射引发的行星际激波对地球高频(HF,3-30 MHz)无线电通信造成干扰。同时,飓风厄玛和何塞对加勒比群岛和佛罗里达部分地区造成严重破坏。空间气象活动和飓风的时间巧合是不幸的,因为紧急通信需要高频无线电。本文介绍了反向信标网和弱信号传播报告网观测到的高频业余无线电传播对该时期空间天气事件的响应。来自这些密集源的分布式数据覆盖提供了电离层响应和恢复的全球和区域覆盖的独特组合,揭示了风暴时间高频传播动力学的若干特征。9月6日、7日和10日的X级耀斑在加勒比海造成了白天的严重无线电中断,根据耀斑的衰变时间,恢复时间为数十分钟至数小时。9月7日至10日发生的Kpmax = 8+和SYM-Hmin = −146 nT的强烈磁暴首先摧毁了14 MHz的电离层通信,然后从9月8日1200 UT开始摧毁了7 MHz的电离层通信。这场风暴,加上额外的耀斑和地磁活动的影响,在12至15天的时间里,对全球和加勒比地区的有效高频传播波段造成了重大抑制。
Numerous solar flares and coronal mass ejection‐induced interplanetary shocks associated with solar active region AR12673 caused disturbances to terrestrial high‐frequency (HF, 3–30 MHz) radio communications from 4–14 September 2017. Simultaneously, Hurricanes Irma and Jose caused significant damage to the Caribbean Islands and parts of Florida. The coincidental timing of both the space weather activity and hurricanes was unfortunate, as HF radio was needed for emergency communications. This paper presents the response of HF amateur radio propagation as observed by the Reverse Beacon Network and the Weak Signal Propagation Reporting Network to the space weather events of that period. Distributed data coverage from these dense sources provided a unique mix of global and regional coverage of ionospheric response and recovery that revealed several features of storm time HF propagation dynamics. X‐class flares on 6, 7, and 10 September caused acute radio blackouts during the day in the Caribbean with recovery times of tens of minutes to hours, based on the decay time of the flare. A severe geomagnetic storm withKpmax= 8+ and SYM‐Hmin= −146 nT occurring 7–10 September wiped out ionospheric communications first on 14 MHz and then on 7 MHz starting at ∼1200 UT 8 September. This storm, combined with affects from additional flare and geomagnetic activity, contributed to a significant suppression of effective HF propagation bands both globally and in the Caribbean for a period of 12 to 15 days.
使用实时业余无线电报告网络进行电离层探测
DOI: --
发表时间: 2014
期刊:
影响因子: --
作者:
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DOI: 10.6028/jres.068d.111
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期刊: Journal of Research of the National Bureau of Standards, Section D: Radio Science
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影响因子: 1.6
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影响因子: 1.6
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