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- Title
Statistical Study of Geo-Effectiveness of Planar Magnetic Structures Evolved within ICME's.
- Authors
Ghag, Kalpesh; Sathe, Bhagyashri; Raghav, Anil; Shaikh, Zubair; Mishra, Digvijay; Bhaskar, Ankush; Pant, Tarun Kumar; Dhamane, Omkar; Tari, Prathmesh; Pathare, Prachi; Pawaskar, Vinit; Kumbhar, Kishor; Hilbert, Greg
- Abstract
Interplanetary coronal mass ejections (ICME) are large-scale eruptions from the Sun and prominent drivers of space weather disturbances, especially intense/extreme geomagnetic storms. Recent studies by our group showed that ICME sheaths and/or magnetic clouds (MC) could be transformed into a planar magnetic structure (PMS) and speculate that these structures might be more geo-effective. Thus, we statistically investigated the geo-effectiveness of planar and non-planar ICME sheaths and MC regions. We analyzed 420 ICME events observed from 1998 to 2017, and we found that the number of intense ( − 100 to − 200 nT) and extreme (< − 200 nT) geomagnetic storms are large during planar ICMEs (almost double) compared to non-planar ICMEs. In fact, almost all the extreme storm events occur during PMS molded ICME crossover. The observations suggest that planar structures are more geo-effective than non-planar structures. Thus, the current study helps us to understand the energy transfer mechanism from the ICME/solar wind into the magnetosphere, and space-weather events.
- Subjects
MAGNETIC structure; CORONAL mass ejections; SPACE environment; SOLAR wind; ENERGY transfer; MAGNETOTELLURICS
- Publication
Universe (2218-1997), 2023, Vol 9, Issue 8, p350
- ISSN
2218-1997
- Publication type
Article
- DOI
10.3390/universe9080350