Science outreach and capacity building in geomagnetism and space sciences-An Indian Institute of Geomagnetism endeavor

Gawali, Praveen B.; Bhaskar, Ankush; Dhar, Ajay; Ramesh, D. S.

doi:10.1002/2015sw001326

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…Geomagnetic storms i.e. the temporary disturbances in the Earth's magnetosphere (Lakhina et al 2007;Gonzalez et al 1994;Tsurutani et al 1995a), are one of such events that can lead to serious adverse effects on communication, navigation and electrical systems (Carrington 1859;Cannon et al 2013;Schrijver & Siscoe 2010;Osella et al 1998;Tsurutani et al 2003;Lakhina & Tsurutani 2016;Gawali et al 2016). In general, the southward oriented interplanetary magnetic field (IMF) in combination with a strong, high speed solar wind stream are considered as a main driver of a geomagnetic storm (Gonzalez et al 1999;Tsurutani et al 1992Tsurutani et al , 1995aVichare et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Torsional Alfvén Wave Embedded ICME Magnetic Cloud and Corresponding Geomagnetic Storm

Raghav

Kule

Bhaskar

et al. 2018

ApJ

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The energy transfer during interaction of large-scale solar wind structure and the Earth's magnetosphere is the chronic issue in space-weather studies. To understand this, researchers widely studied the geomagnetic storms and sub-storms phenomena. The present understanding suggests that long duration of southward interplanetary magnetic field component is the most important parameter for the geomagnetic storm. Such long duration strong southward magnetic field is often associated with ICMEs, torsional Alfvén fluctuations superposed co-rotating interacting regions (CIRs) and fast solar wind streams. Torsional Alfvén fluctuations embedded CIRs have been known for a long, however magnetic cloud embedded with such fluctuations are rarely observed. The presence of Alfvén waves in the ICME/MC and influence of these waves on the storm evolution remains an interesting topic of study. The present work confirms the torsional Alfvén waves in a magnetic cloud associated with a CME launched on 15th February which impacted the Earth's magnetosphere on February 18, 2011. Further, 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 presence of torsional Alfvén waves significantly controls the storm dynamics.

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Section: Introductionmentioning

confidence: 99%

Torsional Alfvén Wave Embedded ICME Magnetic Cloud and Corresponding Geomagnetic Storm

Raghav

Kule

Bhaskar

et al. 2018

ApJ

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Optimal site selection for the geomagnetic measurements at Hanle Observatory in Ladakh, India: Insights from magnetic campaign survey

Seemala,

Vichare,

Dimri

2024

J Earth Syst Sci

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Science outreach and capacity building in geomagnetism and space sciences-An Indian Institute of Geomagnetism endeavor

Abstract: We present an overview of science outreach and capacity building activities at the Indian Institute of Geomagnetism (IIG) against the backdrop of a long history of geomagnetic studies. We also present the future plans of the institute for strengthening these activities.

Cited by 2 publications

References 19 publications

Torsional Alfvén Wave Embedded ICME Magnetic Cloud and Corresponding Geomagnetic Storm

Torsional Alfvén Wave Embedded ICME Magnetic Cloud and Corresponding Geomagnetic Storm

Optimal site selection for the geomagnetic measurements at Hanle Observatory in Ladakh, India: Insights from magnetic campaign survey

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