Research on the ionospheric diurnal Double-Maxima patterns in Asia-Australian area based on the VTEC observations of BDS geostationary satellites

نویسندگان

چکیده

Ionospheric diurnal double-maxima (DDM) pattern is a special phenomenon of the ionosphere, which shows that ionospheric electron density/total content (TEC) presents two-peak structure during daytime. This paper uses Beidou geostationary (GEO) vertical total (VTEC) data from MGEX tracking stations in Asian-Australian area 2019 to 2020 study DDM phenomenon. The results show occurrence rate roughly symmetrical about magnetic equator, with “W”-shaped distribution. With decreasing latitude, first decreases 58%/73% 7%/17% and then increases equatorial region 30%. Minimum occurs near ± 20°. different latitude regions varies longitude. There no significant variation at low-latitudes (magnetic 15°N ∼ 15°S), while northern hemisphere mid-latitudes (regions north 15°N), longitude observation. southern hemisphere’s south 15°S) east 90°E an increasing trend two peaks one valley mainly occur 10:00–13:00 LT, 14:00–18:00 12:00–15:00 respectively. As decreases, time structures tends be delayed, but there increase usually earlier than hemisphere. months inverted “U” shape appear latest local summer earliest winter. low-latitude regions.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

the washback effect of discretepoint vs. integrative tests on the retention of content in knowledge tests

در این پایان نامه تاثیر دو نوع تست جزیی نگر و کلی نگر بر به یادسپاری محتوا ارزیابی شده که نتایج نشان دهندهکارایی تستهای کلی نگر بیشتر از سایر آزمونها است

15 صفحه اول

the impact of e-readiness on ec success in public sector in iran the impact of e-readiness on ec success in public sector in iran

acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...

the effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Advances in Space Research

سال: 2022

ISSN: ['0273-1177', '1879-1948']

DOI: https://doi.org/10.1016/j.asr.2022.02.041