Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere
During minor to moderate geomagnetic storms, caused by corotating interaction regions (CIRs) at the leading edge of high-speed streams (HSSs), solar wind Alfven waves modulated the magnetic reconnection at the dayside magnetopause. The Resolute Bay Incoherent Scatter Radars (RISR-C and RISR-N), meas...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus
2022
|
Subjects: | |
Online Access: | http://hdl.handle.net/10919/114765 https://doi.org/10.5194/angeo-40-619-2022 |
id |
ftvirginiatec:oai:vtechworks.lib.vt.edu:10919/114765 |
---|---|
record_format |
openpolar |
spelling |
ftvirginiatec:oai:vtechworks.lib.vt.edu:10919/114765 2024-05-19T07:36:42+00:00 Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere Annales Geophysicae Prikryl, Paul Gillies, Robert G. Themens, David R. Weygand, James M. Thomas, Evan G. Chakraborty, Shibaji 2022-11 application/pdf http://hdl.handle.net/10919/114765 https://doi.org/10.5194/angeo-40-619-2022 en eng Copernicus http://hdl.handle.net/10919/114765 https://doi.org/10.5194/angeo-40-619-2022 40 6 1432-0576 Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ Interplanetary magnetic-field atmospheric gravity-waves flux-transfer events dissipative multiconstituent medium high-latitude ionosphere radar observations interaction regions global propagation f-region risr-c Article - Refereed Text 2022 ftvirginiatec https://doi.org/10.5194/angeo-40-619-2022 2024-04-24T00:25:08Z During minor to moderate geomagnetic storms, caused by corotating interaction regions (CIRs) at the leading edge of high-speed streams (HSSs), solar wind Alfven waves modulated the magnetic reconnection at the dayside magnetopause. The Resolute Bay Incoherent Scatter Radars (RISR-C and RISR-N), measuring plasma parameters in the cusp and polar cap, observed ionospheric signatures of flux transfer events (FTEs) that resulted in the formation of polar cap patches. The patches were observed as they moved over the RISR, and the Canadian High-Arctic Ionospheric Network (CHAIN) ionosondes and GPS receivers. The coupling process modulated the ionospheric convection and the intensity of ionospheric currents, including the auroral electrojets. The horizontal equivalent ionospheric currents (EICs) are estimated from ground-based magnetometer data using an inversion technique. Pulses of ionospheric currents that are a source of Joule heating in the lower thermosphere launched atmospheric gravity waves, causing traveling ionospheric disturbances (TIDs) that propagated equatorward. The TIDs were observed in the SuperDual Auroral Radar Network (SuperDARN) high-frequency (HF) radar ground scatter and the detrended total electron content (TEC) measured by globally distributed Global Navigation Satellite System (GNSS) receivers. Canada Foundation for Innovation; New Brunswick Innovation Foundation; national scientific funding agency of Australia; national scientific funding agency of Canada; national scientific funding agency of China; national scientific funding agency of France; national scientific funding agency of Italy; national scientific funding agency of Japan; national scientific funding agency of Norway; national scientific funding agency of South Africa; national scientific funding agency of United Kingdom; national scientific funding agency of United States of America; NSF [AGS-1934997]; National Science Foundation [AGS-1935110]; Canadian Space Agency; Province of Saskatchewan; Canadian Space Agency/Geospace ... Article in Journal/Newspaper Arctic Canadian High Arctic Ionospheric Network Resolute Bay VTechWorks (VirginiaTech) Annales Geophysicae 40 6 619 639 |
institution |
Open Polar |
collection |
VTechWorks (VirginiaTech) |
op_collection_id |
ftvirginiatec |
language |
English |
topic |
Interplanetary magnetic-field atmospheric gravity-waves flux-transfer events dissipative multiconstituent medium high-latitude ionosphere radar observations interaction regions global propagation f-region risr-c |
spellingShingle |
Interplanetary magnetic-field atmospheric gravity-waves flux-transfer events dissipative multiconstituent medium high-latitude ionosphere radar observations interaction regions global propagation f-region risr-c Prikryl, Paul Gillies, Robert G. Themens, David R. Weygand, James M. Thomas, Evan G. Chakraborty, Shibaji Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere |
topic_facet |
Interplanetary magnetic-field atmospheric gravity-waves flux-transfer events dissipative multiconstituent medium high-latitude ionosphere radar observations interaction regions global propagation f-region risr-c |
description |
During minor to moderate geomagnetic storms, caused by corotating interaction regions (CIRs) at the leading edge of high-speed streams (HSSs), solar wind Alfven waves modulated the magnetic reconnection at the dayside magnetopause. The Resolute Bay Incoherent Scatter Radars (RISR-C and RISR-N), measuring plasma parameters in the cusp and polar cap, observed ionospheric signatures of flux transfer events (FTEs) that resulted in the formation of polar cap patches. The patches were observed as they moved over the RISR, and the Canadian High-Arctic Ionospheric Network (CHAIN) ionosondes and GPS receivers. The coupling process modulated the ionospheric convection and the intensity of ionospheric currents, including the auroral electrojets. The horizontal equivalent ionospheric currents (EICs) are estimated from ground-based magnetometer data using an inversion technique. Pulses of ionospheric currents that are a source of Joule heating in the lower thermosphere launched atmospheric gravity waves, causing traveling ionospheric disturbances (TIDs) that propagated equatorward. The TIDs were observed in the SuperDual Auroral Radar Network (SuperDARN) high-frequency (HF) radar ground scatter and the detrended total electron content (TEC) measured by globally distributed Global Navigation Satellite System (GNSS) receivers. Canada Foundation for Innovation; New Brunswick Innovation Foundation; national scientific funding agency of Australia; national scientific funding agency of Canada; national scientific funding agency of China; national scientific funding agency of France; national scientific funding agency of Italy; national scientific funding agency of Japan; national scientific funding agency of Norway; national scientific funding agency of South Africa; national scientific funding agency of United Kingdom; national scientific funding agency of United States of America; NSF [AGS-1934997]; National Science Foundation [AGS-1935110]; Canadian Space Agency; Province of Saskatchewan; Canadian Space Agency/Geospace ... |
format |
Article in Journal/Newspaper |
author |
Prikryl, Paul Gillies, Robert G. Themens, David R. Weygand, James M. Thomas, Evan G. Chakraborty, Shibaji |
author_facet |
Prikryl, Paul Gillies, Robert G. Themens, David R. Weygand, James M. Thomas, Evan G. Chakraborty, Shibaji |
author_sort |
Prikryl, Paul |
title |
Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere |
title_short |
Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere |
title_full |
Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere |
title_fullStr |
Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere |
title_full_unstemmed |
Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere |
title_sort |
multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind alfven waves coupling to the dayside magnetosphere |
publisher |
Copernicus |
publishDate |
2022 |
url |
http://hdl.handle.net/10919/114765 https://doi.org/10.5194/angeo-40-619-2022 |
genre |
Arctic Canadian High Arctic Ionospheric Network Resolute Bay |
genre_facet |
Arctic Canadian High Arctic Ionospheric Network Resolute Bay |
op_relation |
http://hdl.handle.net/10919/114765 https://doi.org/10.5194/angeo-40-619-2022 40 6 1432-0576 |
op_rights |
Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5194/angeo-40-619-2022 |
container_title |
Annales Geophysicae |
container_volume |
40 |
container_issue |
6 |
container_start_page |
619 |
op_container_end_page |
639 |
_version_ |
1799475848869314560 |