Academic Journal

Properties of Medium-Scale Traveling Ionospheric Disturbances Observed over Mexico during Quiet Solar Activity.

التفاصيل البيبلوغرافية
العنوان: Properties of Medium-Scale Traveling Ionospheric Disturbances Observed over Mexico during Quiet Solar Activity.
المؤلفون: Romero-Hernandez, Esmeralda, Salinas-Samaniego, Federico, Jonah, Olusegun F., Aguilar-Rodriguez, Ernesto, Rodriguez-Martinez, Mario, da Silva Picanço, Giorgio Arlan, Denardini, Clezio M., Guerrero-Peña, Carlos Alberto, Aguirre-Gutierrez, Rogelio, Garcia-Castillo, Flor Araceli, Ayala, Sandra, Perez-Tijerina, Eduardo, Sergeeva, Maria A., Gonzalez-Esparza, Juan Americo
المصدر: Atmosphere; Aug2024, Vol. 15 Issue 8, p894, 14p
مصطلحات موضوعية: IONOSPHERIC disturbances, GLOBAL Positioning System, GRAVITY waves, SOLAR activity, IONOSPHERE
مستخلص: We present a statistical study of some physical properties of medium-scale traveling ionospheric disturbances (MSTIDs) registered over the Mexican territory during 2018 and 2019 (solar minimum). The analysis is based on total electron content ( T E C ) approximations using data from the ground-based Global Navigation Satellite System (GNSS) receivers at different locations, divided into three regions according to geographic longitudes: west, center, and east. The MSTIDs were classified into day and night events, and only geomagnetically quiet days were considered to reduce the solar influence. We explored fundamental aspects of the MSTIDs, such as differences between day and night events, occurrence patterns, and geographical differences. Our results show some similarities with the occurrence periods of gravity waves, exhibiting high activity during summer and winter. For this period, however, most events occurred between 20:00 and 04:00 AM UT. The most energetic events, i.e., large amplitudes and power, occurred around the sunset terminator. This suggests that the density gradient generated when the sunlight falls benefits MSTID formation. [ABSTRACT FROM AUTHOR]
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قاعدة البيانات: Complementary Index
الوصف
تدمد:20734433
DOI:10.3390/atmos15080894