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Equatorial ElectroJet - Indian Model
November 11 , 2024
17 days
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- Earth’s geomagnetic equator passes very close to the southern tip of India.
- There is a unique and very strong current of the order of 100 kA known as Equatorial ElectroJet (EEJ).
- It flows at around 105-110 km height in the upper atmosphere.
- Due to this intense current jet, the geomagnetic field near the equator is uniquely enhanced by a few tens to a few hundreds of nano teslas (nT).
- Measuring this current intensity through the geomagnetic field enhancement provides an important understanding of the variation of ionospheric electric field.
- The Scientists from Indian Institute of Geomagnetism (IIG) Navi Mumbai, have developed an empirical model that can predict the EEJ current very accurately.
- It will help to understand the EEJ’s impact on orbiting satellite, Global Navigation Satellite System (GNSS)-based navigation/positioning and other satellite communication links as well as electrical power grids.
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