Ionospheric effects of the solar eclipse of March 9, 1997, as deduced from data from the GPS-radio interferometer at Irkutsk

IF 2.8 3区地球科学 Q2 ASTRONOMY & ASTROPHYSICS Advances in Space Research Pub Date : 2000-01-01 DOI:10.1016/S0273-1177(00)00045-4

E.L. Afraimovich , K.S. Palamartchouk , N.P. Perevalova , V.V. Chernukhov , A.V. Lukhnev , V.T. Zalutsky

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Abstract

This paper presents data from first measurements of total electron content (TEC) and its gradient variations during the solar eclipse of March 9, 1997, obtained with the GPS-radio interferometer at Irkutsk. The interferometer consists of three receivers located at the vertices of a triangle and spaced by about 3–5 km. The measured TEC variations are indicative of profound changes in the ion production process in the ionosphere attendant on the solar eclipse, simultaneously in a large volume of space with a radius of 400 km at 300 km altitude. The delay of a minimum value of TEC with respect to the maximum phase of eclipse at 300 km altitude was about 10 min, and the depression depth of TEC growth varies from 1÷3×10¹⁶ m⁻². By analyzing the data on TEC gradient variations, one is led to conclude that the depression of TEC growth during the eclipse is essentially independent of the longitude and of the latitude (within the observation ranges 52±6° N and 104±11° E).

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1997年3月9日日食的电离层效应，根据伊尔库茨克gps无线电干涉仪的数据推断

本文介绍了1997年3月9日日食期间用伊尔库茨克gps -无线电干涉仪首次测量总电子含量（TEC）及其梯度变化的数据。干涉仪由三个位于三角形顶点的接收器组成，间隔约3-5公里。测量到的TEC变化表明，在300公里高度、半径400公里的大空间内，随着日食的发生，电离层中离子产生过程发生了深刻的变化。在海拔300 km处，TEC的最小值相对于日食最大相位的延迟约为10 min， TEC增长的下降深度为1÷3×1016 m−2。通过对TEC梯度变化数据的分析，得出了日食期间TEC增长的下降与经纬度（52±6°N和104±11°E）基本无关的结论。

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来源期刊

Advances in Space Research 地学天文-地球科学综合

CiteScore

5.20

自引率

11.50%

发文量

800

审稿时长

5.8 months

期刊介绍： The COSPAR publication Advances in Space Research (ASR) is an open journal covering all areas of space research including: space studies of the Earth''s surface, meteorology, climate, the Earth-Moon system, planets and small bodies of the solar system, upper atmospheres, ionospheres and magnetospheres of the Earth and planets including reference atmospheres, space plasmas in the solar system, astrophysics from space, materials sciences in space, fundamental physics in space, space debris, space weather, Earth observations of space phenomena, etc. NB: Please note that manuscripts related to life sciences as related to space are no more accepted for submission to Advances in Space Research. Such manuscripts should now be submitted to the new COSPAR Journal Life Sciences in Space Research (LSSR). All submissions are reviewed by two scientists in the field. COSPAR is an interdisciplinary scientific organization concerned with the progress of space research on an international scale. Operating under the rules of ICSU, COSPAR ignores political considerations and considers all questions solely from the scientific viewpoint.