The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities
International audience 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...
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ftinsu:oai:HAL:hal-00316261v1 2023-11-12T04:26:22+01:00 The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities Watari, S. Communications Research Laboratory 4-2-1 Nukuikita 1997 https://hal.science/hal-00316261 https://hal.science/hal-00316261/document https://hal.science/hal-00316261/file/angeo-15-662-1997.pdf en eng HAL CCSD European Geosciences Union hal-00316261 https://hal.science/hal-00316261 https://hal.science/hal-00316261/document https://hal.science/hal-00316261/file/angeo-15-662-1997.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316261 Annales Geophysicae, 1997, 15 (6), pp.662-670 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 1997 ftinsu 2023-10-25T16:25:42Z International audience 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 Institut national des sciences de l'Univers: HAL-INSU South Pole |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Watari, S. The effect of the high-speed stream following the corotating interaction region on the geomagnetic activities |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience 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. |
author2 |
Communications Research Laboratory 4-2-1 Nukuikita |
format |
Article in Journal/Newspaper |
author |
Watari, S. |
author_facet |
Watari, S. |
author_sort |
Watari, S. |
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 |
HAL CCSD |
publishDate |
1997 |
url |
https://hal.science/hal-00316261 https://hal.science/hal-00316261/document https://hal.science/hal-00316261/file/angeo-15-662-1997.pdf |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316261 Annales Geophysicae, 1997, 15 (6), pp.662-670 |
op_relation |
hal-00316261 https://hal.science/hal-00316261 https://hal.science/hal-00316261/document https://hal.science/hal-00316261/file/angeo-15-662-1997.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782340372315242496 |