LONG-TERM TREND OF THE IONOSPHERIC E-LAYER RESPONSE TO SOLAR FLARES
Using data from ground-based vertical sounding of the ionosphere (VS) at the station Moscow and five Japanese stations for the period from 1969 to 2015, we have examined the long-term response of the E layer to solar X-ray flares. The analysis relies on the previously developed method for estimating...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
INFRA-M
2022-03-01
|
| Series: | Solar-Terrestrial Physics |
| Subjects: | |
| Online Access: | https://naukaru.ru/en/nauka/article/45266/view |
| _version_ | 1819156568305827840 |
|---|---|
| author | G.V. Givishvili L.N. Leshchenko |
| author_facet | G.V. Givishvili L.N. Leshchenko |
| author_sort | G.V. Givishvili |
| collection | DOAJ |
| description | Using data from ground-based vertical sounding of the ionosphere (VS) at the station Moscow and five Japanese stations for the period from 1969 to 2015, we have examined the long-term response of the E layer to solar X-ray flares. The analysis relies on the previously developed method for estimating the ratio between rates of ionization by X-rays qx and ultraviolet radiation qu during flares. We confirmed the existence of a long-term (at least covering the 45-year observation period) increase in the proportion of X-rays in the total ionization rate of the ionospheric E layer, characterized by the ratio qx/q, where q=qx+q. The qx/q ratio is shown to increase throughout the period of interest at a rate independent of the solar activity cycle. There is also no dependence of the qx/q trend rate on the season, latitude (26°–56° N), and longitude (37°–28° E). |
| first_indexed | 2024-12-22T15:54:56Z |
| format | Article |
| id | doaj.art-c3f750417eec46929826aa55088016fb |
| institution | Directory Open Access Journal |
| issn | 2500-0535 |
| language | English |
| last_indexed | 2024-12-22T15:54:56Z |
| publishDate | 2022-03-01 |
| publisher | INFRA-M |
| record_format | Article |
| series | Solar-Terrestrial Physics |
| spelling | doaj.art-c3f750417eec46929826aa55088016fb2022-12-21T18:20:49ZengINFRA-MSolar-Terrestrial Physics2500-05352022-03-0181515710.12737/stp-81202206LONG-TERM TREND OF THE IONOSPHERIC E-LAYER RESPONSE TO SOLAR FLARESG.V. Givishvili0https://orcid.org/0000-0002-0577-0077L.N. Leshchenko1https://orcid.org/0000-0003-4894-9437Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation RAS, Moscow, Troitsk, RussiaPushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation RAS, Moscow, Troitsk, RussiaUsing data from ground-based vertical sounding of the ionosphere (VS) at the station Moscow and five Japanese stations for the period from 1969 to 2015, we have examined the long-term response of the E layer to solar X-ray flares. The analysis relies on the previously developed method for estimating the ratio between rates of ionization by X-rays qx and ultraviolet radiation qu during flares. We confirmed the existence of a long-term (at least covering the 45-year observation period) increase in the proportion of X-rays in the total ionization rate of the ionospheric E layer, characterized by the ratio qx/q, where q=qx+q. The qx/q ratio is shown to increase throughout the period of interest at a rate independent of the solar activity cycle. There is also no dependence of the qx/q trend rate on the season, latitude (26°–56° N), and longitude (37°–28° E).https://naukaru.ru/en/nauka/article/45266/viewionospheric e layervertical soundingsolar flareslong-term trend |
| spellingShingle | G.V. Givishvili L.N. Leshchenko LONG-TERM TREND OF THE IONOSPHERIC E-LAYER RESPONSE TO SOLAR FLARES Solar-Terrestrial Physics ionospheric e layer vertical sounding solar flares long-term trend |
| title | LONG-TERM TREND OF THE IONOSPHERIC E-LAYER RESPONSE TO SOLAR FLARES |
| title_full | LONG-TERM TREND OF THE IONOSPHERIC E-LAYER RESPONSE TO SOLAR FLARES |
| title_fullStr | LONG-TERM TREND OF THE IONOSPHERIC E-LAYER RESPONSE TO SOLAR FLARES |
| title_full_unstemmed | LONG-TERM TREND OF THE IONOSPHERIC E-LAYER RESPONSE TO SOLAR FLARES |
| title_short | LONG-TERM TREND OF THE IONOSPHERIC E-LAYER RESPONSE TO SOLAR FLARES |
| title_sort | long term trend of the ionospheric e layer response to solar flares |
| topic | ionospheric e layer vertical sounding solar flares long-term trend |
| url | https://naukaru.ru/en/nauka/article/45266/view |
| work_keys_str_mv | AT gvgivishvili longtermtrendoftheionosphericelayerresponsetosolarflares AT lnleshchenko longtermtrendoftheionosphericelayerresponsetosolarflares |