Borries, Claudia and Ferreira, Arthur Amaral and Xiong, Chao and Borges, Renato Alves and Mielich, Jens and Kouba, Daniel (2020) Properties and Generation of Large Scale Travelling Ionospheric Disturbances during 8 September 2017. EGU General Assembly 2020, 2020-05-04 - 2020-05-08, Online. doi: 10.5194/egusphere-egu2020-18107.
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Abstract
Large Scale Travelling Ionospheric Disturbances (LSTIDs) are a frequent phenomenon during ionospheric storms, indicating strong electrodynamic processes in high latitudes. LSTIDs are signatures of Atmospheric Gravity Waves (AGW) observed in the changes of the electron density in the ionosphere. During ionospheric storms, large scale AGWs are often generated in the vicinity of the auroral region, where sudden strong heating processes take place. Many LSTIDs are observed during the ionosphere storm during the September 2017 Space Weather event. In this presentation, the LSTID occurrence on 8th September 2017 is analysed in more detail, based on a TID detection method using ground based Global Navigation Satellite System (GNSS) measurements. Fast LSTIDs are observed in midlatitudes between 0-3 UT and 13-16 UT. Slow LSTIDs are observed between 3-12 UT. A significant strong wave-like TEC perturbation occurred in high latitudes at noon, which vanished at around 50°N. A strong single LSTID in mid-latitudes generated in high latitudes around 18 UT. Consulting IMAGE magnetometer data, ionosonde measurements and Swarm field aligned current measurements, strong heating processes, the extension of the Auroral oval and unusual electrodynamic processes are discussed as source mechanisms for these LSTIDs.
Item URL in elib: | https://elib.dlr.de/134967/ | ||||||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Other) | ||||||||||||||||||||||||||||
Title: | Properties and Generation of Large Scale Travelling Ionospheric Disturbances during 8 September 2017 | ||||||||||||||||||||||||||||
Authors: |
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Date: | May 2020 | ||||||||||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||
DOI: | 10.5194/egusphere-egu2020-18107 | ||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||
Keywords: | ionosphere, perturbation, wave, storm, electric fields, TID, GIC | ||||||||||||||||||||||||||||
Event Title: | EGU General Assembly 2020 | ||||||||||||||||||||||||||||
Event Location: | Online | ||||||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||||||
Event Start Date: | 4 May 2020 | ||||||||||||||||||||||||||||
Event End Date: | 8 May 2020 | ||||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||||||||||
HGF - Program Themes: | Earth Observation | ||||||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||||||
DLR - Program: | R EO - Earth Observation | ||||||||||||||||||||||||||||
DLR - Research theme (Project): | R - Space Weather Effects EO (old) | ||||||||||||||||||||||||||||
Location: | Neustrelitz | ||||||||||||||||||||||||||||
Institutes and Institutions: | Institute for Solar-Terrestrial Physics > Solar-Terrestrial Coupling Processes | ||||||||||||||||||||||||||||
Deposited By: | Borries, Dr. Claudia | ||||||||||||||||||||||||||||
Deposited On: | 17 Jun 2020 21:52 | ||||||||||||||||||||||||||||
Last Modified: | 21 May 2025 10:00 |
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