The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities
The high-speed stream following the corotating interaction regions (CIRs) was analyzed. As a result of the analysis, it is found that the geomagnetic field is continuously disturbed in the high-speed stream in question. The geomagnetic disturbances with long duration recurred several rotations betwe...
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Copernicus Publications
1997
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ftdoajarticles:oai:doaj.org/article:f4b3fe87ef0c42a2ab096d5f3a22607d 2023-05-15T18:22:47+02:00 The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities S. Watari 1997-06-01T00:00:00Z https://doi.org/10.1007/s00585-997-0662-5 https://doaj.org/article/f4b3fe87ef0c42a2ab096d5f3a22607d EN eng Copernicus Publications https://www.ann-geophys.net/15/662/1997/angeo-15-662-1997.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-997-0662-5 0992-7689 1432-0576 https://doaj.org/article/f4b3fe87ef0c42a2ab096d5f3a22607d Annales Geophysicae, Vol 15, Pp 662-670 (1997) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 1997 ftdoajarticles https://doi.org/10.1007/s00585-997-0662-5 2022-12-31T14:17:28Z The high-speed stream following the corotating interaction regions (CIRs) was analyzed. As a result of the analysis, it is found that the geomagnetic field is continuously disturbed in the high-speed stream in question. The geomagnetic disturbances with long duration recurred several rotations between December 1993 and June 1994. These disturbances were associated with a large recurrent coronal hole expanding from the south pole of the Sun. High-speed solar wind from this coronal hole was observed by the IMP-8 satellite during this period. However, the observed intensities of the geomagnetic disturbances were different for each recurrent period. This is explained by the seasonal effect. The disturbed geomagnetic condition continued in the high-speed stream after the passage of the CIRs. The long duration of these disturbances can be explained by the continuous energy input into the Earth's magnetosphere from the high-speed regions following the CIRs. This kind of long-duration geomagnetic disturbance in association with coronal holes has been observed in the declining phase of other solar cycles. The relation between the coronal-hole area and the maximum solar-wind velocity is not good for the well-developed large coronal hole analyzed here. Article in Journal/Newspaper South pole Directory of Open Access Journals: DOAJ Articles South Pole Annales Geophysicae 15 6 662 670 |
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Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
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Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 S. Watari The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities |
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Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The high-speed stream following the corotating interaction regions (CIRs) was analyzed. As a result of the analysis, it is found that the geomagnetic field is continuously disturbed in the high-speed stream in question. The geomagnetic disturbances with long duration recurred several rotations between December 1993 and June 1994. These disturbances were associated with a large recurrent coronal hole expanding from the south pole of the Sun. High-speed solar wind from this coronal hole was observed by the IMP-8 satellite during this period. However, the observed intensities of the geomagnetic disturbances were different for each recurrent period. This is explained by the seasonal effect. The disturbed geomagnetic condition continued in the high-speed stream after the passage of the CIRs. The long duration of these disturbances can be explained by the continuous energy input into the Earth's magnetosphere from the high-speed regions following the CIRs. This kind of long-duration geomagnetic disturbance in association with coronal holes has been observed in the declining phase of other solar cycles. The relation between the coronal-hole area and the maximum solar-wind velocity is not good for the well-developed large coronal hole analyzed here. |
format |
Article in Journal/Newspaper |
author |
S. Watari |
author_facet |
S. Watari |
author_sort |
S. Watari |
title |
The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities |
title_short |
The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities |
title_full |
The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities |
title_fullStr |
The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities |
title_full_unstemmed |
The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities |
title_sort |
effect of the high-speed stream following the corotating interaction region on the geomagnetic activities |
publisher |
Copernicus Publications |
publishDate |
1997 |
url |
https://doi.org/10.1007/s00585-997-0662-5 https://doaj.org/article/f4b3fe87ef0c42a2ab096d5f3a22607d |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Annales Geophysicae, Vol 15, Pp 662-670 (1997) |
op_relation |
https://www.ann-geophys.net/15/662/1997/angeo-15-662-1997.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-997-0662-5 0992-7689 1432-0576 https://doaj.org/article/f4b3fe87ef0c42a2ab096d5f3a22607d |
op_doi |
https://doi.org/10.1007/s00585-997-0662-5 |
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Annales Geophysicae |
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15 |
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6 |
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662 |
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670 |
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