Projects per year
Abstract
During minor to moderate geomagnetic storms, caused by corotating interaction regions (CIRs) at the leading edge of high-speed streams (HSSs), solar wind Alfvén 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.
Original language | English |
---|---|
Pages (from-to) | 619-639 |
Number of pages | 21 |
Journal | Annales Geophysicae |
Volume | 40 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2 Nov 2022 |
Bibliographical note
Funding Information:Infrastructure funding for CHAIN was provided by the Canada Foundation for Innovation and the New Brunswick Innovation Foundation. CHAIN operation is conducted in collaboration with the Canadian Space Agency (CSA). Contributions by the ACE (Norman F. Nees at Bartol Research Institute, David J. McComas at SWRI), Geotail (Susumu Kokubun at STELAB Nagoya University), Wind spacecraft teams, NASA's SPDF/CDAWeb, and the NSSDC OMNIWeb are acknowledged. RISR-C is funded by the Canada Foundation for Innovation and led by the University of Calgary, University of Saskatchewan, Athabasca University, and SRI International. The authors acknowledge the use of SuperDARN data. SuperDARN is a collection of radars funded by the national scientific funding agencies of Australia, Canada, China, France, Italy, Japan, Norway, South Africa, United Kingdom, and the United States of America. The Christmas Valley SuperDARN radars are maintained and operated by Dartmouth College under support by NSF grant AGS-1934997. Operations of the Goose Bay, Kapuskasing, and Blackstone SuperDARN radars are supported by the National Science Foundation under award AGS-1935110. The operation of the Saskatoon radar is supported by the Canada Foundation for Innovation, the Canadian Space Agency, and the Province of Saskatchewan. We thank the many different groups operating magnetometer arrays for providing data for this study, including the THEMIS UCLA magnetometer network (Ground-based Imager and Magnetometer Network for Auroral Studies). The AUTUMNX magnetometer network is funded through the Canadian Space Agency/Geospace Observatory (GO) Canada program, Athabasca University, Centre for Science/Faculty of Science and Technology. The Magnetometer Array for Cusp and Cleft Studies (MACCS) array is supported by the US National Science Foundation grant ATM-0827903 to Augsburg College. The Solar and Terrestrial Physics (STEP) magnetometer file storage is at the Department of Earth and Planetary Physics, University of Tokyo and maintained by Kanji Hayashi ([email protected]). The McMAC Project is sponsored by the Magnetospheric Physics Program of National Science Foundation through grant AGS-0245139. The ground magnetic stations are operated by the Technical University of Denmark, National Space Institute (DTU Space). The Canadian Space Science Data Portal is funded in part by the Canadian Space Agency contract numbers 9 F007-071429 and 9 F007-070993. The Canadian Magnetic Observatory Network (CANMON) is maintained and operated by the Geological Survey of Canada. David R. Themens's contribution to this work is supported in part through CSA grant no. 21SUSTCHAI and through the United Kingdom Natural Environment Research Council (NERC) EISCAT3D: Fine-scale structuring, scintillation, and electrodynamics (FINESSE) (NE/W003147/1) and DRivers and Impacts of Ionospheric Variability with EISCAT-3D (DRIIVE) (NE/W003368/1) projects. James M. Weygand acknowledges NASA grant: 80NSSC18K0570, 80NSSC18K1220, NASA contract: 80GSFC17C0018 (HPDE), NAS5-02099(THEMIS). Shibaji Chakraborty thanks the National Science Foundation for support under grant AGS-1935110.
The solar wind data can be obtained from the NSSDC OMNIWeb http://omniweb.gsfc.nasa.gov (NASA, 2022). The ground-based magnetometer data can be accessed from the Geophysical Institute Magnetometer Array (GIMA) ( https://www.gi.alaska.edu/monitors/magnetometer/archive , University of Alaska Fairbanks, 2022), the Geomagnetic Laboratory of the Natural Resources Canada (NRCan) ( https://www.spaceweather.ca , last access: 25 September 2022), and the Canadian Array for Realtime Investigations of Magnetic Activity (CARISMA) ( https://www.carisma.ca/ , University of Alberta, 2022), SuperMAG ( https://supermag.jhuapl.edu/mag/ , Gjerloev, 2012) and INTERMAGNET ( https://www.intermagnet.org , British Geological Survey, 2022). RISR-C data are available at http://data.phys.ucalgary.ca/ (University of Calgary, 2022a) and https://madrigal.phys.ucalgary.ca/ (University of Calgary, 2022b). The Resolute Bay Incoherent Scatter Radar (RISR-N) is operated by SRI International on behalf of the US National Science Foundation under NSF Cooperative Agreement AGS-1133009. RISR-N data are available at http://amisr.com/database/ (SRI International, 2022). SuperDARN data are available at https://www.frdr-dfdr.ca/repo/collection/superdarn (FRDR, 2022). Line-of-Sight TEC data were acquired from the Madrigal database http://cedar.openmadrigal.org/ (CEDAR, 2022). CHAIN GNSS data are available at http://chain.physics.unb.ca/chain/pages/data_download (CHAIN, 2022). Equivalent Ionospheric Currents (EICs) derived using the Spherical Elementary Currents Systems (SECS) technique are available through http://vmo.igpp.ucla.edu/data1/SECS/ (SECS, 2022) and https://cdaweb.gsfc.nasa.gov/pub/data/aaa_special-purpose-datasets/spherical-elementary-and-equivalent-ionospheric-currents-weygand/ (last access: 25 September 2022; 10.21978/P8D62B , Weygand, 2009a; 10.21978/P8PP8X , Weygand, 2009b).
Publisher Copyright:
Copyright © 2022 Paul Prikryl et al.
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Geology
- Atmospheric Science
- Earth and Planetary Sciences (miscellaneous)
- Space and Planetary Science
Fingerprint
Dive into the research topics of 'Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfvén waves coupling to the dayside magnetosphere'. Together they form a unique fingerprint.Projects
- 2 Active
-
DRivers and Impacts of Ionospheric Variability with EISCAT-3D (DRIIVE)
Elvidge, S. (Principal Investigator) & Themens, D. (Co-Investigator)
Natural Environment Research Council
11/04/22 → 10/04/26
Project: Research Councils
-
EISCAT_3D: Fine-scale structuring, scintillation, and electrodynamics (FINESSE)
Wood, A. (Principal Investigator) & Themens, D. (Co-Investigator)
Natural Environment Research Council
11/04/22 → 10/04/26
Project: Research Councils