A Study of SuperDARN Response to Co‐occurring Space Weather Phenomena

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  • S. Chakraborty
    Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA
  • J. B. H. Baker
    Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA
  • J. M. Ruohoniemi
    Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA
  • B. Kunduri
    Institute for Space‐Earth Environmental Research Nagoya University Nagoya Japan
  • N. Nishitani
    Institute for Space‐Earth Environmental Research Nagoya University Nagoya Japan
  • S. G. Shepherd
    Thayer School of Engineering Dartmouth College Hanover NH USA

書誌事項

公開日
2019-09
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#am
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2019sw002179
公開者
American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>The Sun was remarkably active during the first week of September 2017 producing numerous solar flares, solar radiation storms, and coronal mass ejections. This activity caused disruption to terrestrial high‐frequency (HF, 3–30 MHz) radio communication channels including observations with the Super Dual Auroral Radar Network (SuperDARN) HF radars. In this paper, we analyze the response of SuperDARN groundscatter observations and decreases in background sky noise level in response to multiple solar flares occurring in quick succession and co‐occurring with solar energetic protons and auroral activity. We estimate the attenuation in HF signal strength using an approach similar to riometry and find that the radars exhibit a nonlinear response to compound solar flare events. Additionally, we find that the three different space weather drivers have varying degrees of influence on the HF signal properties at different latitudes. Our study demonstrates that in addition to monitoring high‐latitude convection, SuperDARN observations can be used to study the spatiotemporal evolution of disruption to HF communication during extreme space weather conditions.</jats:p>

収録刊行物

  • Space Weather

    Space Weather 17 (9), 1351-1363, 2019-09

    American Geophysical Union (AGU)

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