Data · dataset · 2026
Torsional Alfvén wave embedded ICME magnetic cloud and corresponding geomagnetic storm
Listed in National Center for Atmospheric Research
Energy transfer during the interaction of large-scale solar wind structure and the Earth's magnetosphere is a chronic issue in space-weather studies.
Description
To understand this, researchers widely studied the geomagnetic storm and substorm phenomena. The present understanding suggests that the long duration of the southward interplanetary magnetic field component is the most important parameter for the geomagnetic storm.
Such a long duration strong southward magnetic field is often associated with ICMEs, torsional Alfven fluctuations superposed corotating interacting regions (CIRs), and fast solar wind streams. Torsional Alfven fluctuations embedded CIRs have been known of for a long time; however, magnetic clouds embedded with such fluctuations are rarely observed. The presence of Alfven waves in the ICME/MC and the influence of these waves on the storm evolution remains an interesting topic of study.
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The present work confirms the torsional Alfven waves in a magnetic cloud associated with a CME launched on 2011 February 15, which impacted the Earth's magnetosphere on 2011 February 18. Furthermore, observations indicate that these waves inject energy into the magnetosphere during the storm and contribute to the long recovery time of geomagnetic storms. Our study suggests that the presence of torsional Alfven waves significantly controls the storm dynamics.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7f192hg ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/torsional-alfvan-wave-embedded-icme-magnetic-cloud-and… ↗
National Center for Atmospheric Research dataset page
landing page · from data ucar edu
Catalogue records · 1
- CKAN API data.ucar.edu/api/3/action/package_show?id=01b8599d-eed3-4ecb-94be-14152e225… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | 01b8599d-eed3-4ecb-94be-14152e225430 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| created_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| description | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /notes |
| publication_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| title | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /title |
| updated_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 |