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Large‐Scale Traveling Ionospheric Disturbances Over the European Sector During the Geomagnetic Storm on March 23–24, 2023: Energy Deposition in the Source Regions and the Propagation Characteristics
Abstract
Multiple Large-Scale Traveling Ionospheric Disturbances (LSTIDs) are observed in the European sector in both day-time and night-time during the magnetic storm on March 23–24, 2023. The Total Electron Content (TEC) observation from a network of GNSS receivers shows the propagation of LSTIDs with amplitudes between around 0.5 and 1 TECU originating from auroral and polar cusp regions down to southern Europe (35°N) with velocities between around 500 and 1,600 [m/s]. We study the energy deposition to the LSTIDs in the source regions and the resulting horizontal propagation over storm-time background density by using continuous measurements of EISCAT incoherent scatter radars in northern Norway and Svalbard that allow for estimating the source energy to the thermosphere-ionosphere system via Joule heating and particle precipitation. Both EISCAT and GNSS TEC data show that the electron density decreased to 50% in the auroral zone after the storm onset. The ionospheric heating caused a nearly 250% increase in the electron temperature above 200 km altitude and the ion temperature above 100 km altitude. We find that Joule Heating acts as a primary energy source for the night-time LSTIDs triggered in the auroral region, while the day-time LSTIDs can be also driven by precipitating particles in the polar cusp. We also find that a significant background density decrease over the whole European sector is caused by this storm for the following day, during which almost no clear LSTIDs are observed.
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Authors (6)
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Arthur Amaral Ferreira
- Institute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, Germany
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Florian Günzkofer
- Institute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, Germany
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Pelin Iochem
- Institute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, Germany
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Samira Tasnim
- Institute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, Germany
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Hiroatsu Sato
- Institute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, Germany
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1029/2023JA032145
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
no. 129,
ISSN: 2169-9380 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Nykiel G., Ferreira A. A., Günzkofer F., Iochem P., Tasnim S., Sato H.: Large‐Scale Traveling Ionospheric Disturbances Over the European Sector During the Geomagnetic Storm on March 23–24, 2023: Energy Deposition in the Source Regions and the Propagation Characteristics// JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS -Vol. 129,iss. 3 (2024),
- DOI:
- Digital Object Identifier (open in new tab) 10.1029/2023ja032145
- Sources of funding:
-
- IDUB
- Verified by:
- Gdańsk University of Technology
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