학술논문
Likelihood of gradient drift instability development during the August 21, 2017 solar eclipse.
Document Type
Article
Source
Subject
*SOLAR eclipses
*IONOSPHERE
*MAGNITUDE (Mathematics)
*SPACE sciences
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Language
ISSN
1042-0150
Abstract
The effect of the August 21, 2017 solar eclipse on the ionosphere is modeled using Sami3 is Also a Model of the Ionosphere (SAMI3). Due to the density gradient geometry that arises from the solar eclipse response, the gradient drift instability (GDI) is hypothesized to develop and grow. The GDI growth rate is calculated using the model data and setting wavevector direction to maximize growth. The results show that the GDI growth is an order of magnitude lower than the ionospheric eclipse response time. Therefore, the ionosphere returns to generally normal conditions before the GDI can grow. It is concluded that the GDI is not expected to grow during a solar eclipse. [ABSTRACT FROM AUTHOR]