Simultaneous equatorial plasma bubble observation using amplitude scintillations from GNSS and LEO satellites in low-latitude region
نویسندگان
چکیده
Abstract This study estimates the scale sizes of plasma density irregularities and longitudinal width associated with equatorial bubbles (EPBs) in low-latitude regions. By analyzing amplitude scintillation S 4 indices total electron content (TEC) measured from low earth orbit (LEO) satellite’s beacon signals 400 MHz Global Navigation Satellite System (GNSS) L1/E1 1575.42 MHz, recorded by receivers at KMITL station Bangkok, Thailand (geographic; 13.73° N, 100.77°E, magnetic: 7.26°N), we investigate characteristics these irregularities. We collected data 154 LEO satellite pass events during nighttime on 21 disturbed days four equinoctial months 2021. Based presence or absence effects GNSS signals, are categorized into classes to estimate size The analysis suggests that both scintillations, as well alone, occur predominantly before midnight assuming small-scale within EPB. However, only throughout whole night some observed scintillations. Post-sunset alone may be attributed onset EPBs developing altitude, while post-midnight near magnetic equator, periods Rate TEC Index (ROTI) values, bottom-side ionospheric but not linked findings consistent previous researches generation decay bubbles. this provides new insights using specific sets techniques, offering a more comprehensive understanding association scintillations ROTI map. Graphical
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ژورنال
عنوان ژورنال: Earth, Planets and Space
سال: 2023
ISSN: ['1880-5981', '1343-8832']
DOI: https://doi.org/10.1186/s40623-023-01877-6