COMPARISON BETWEEN INDICES DURING GEOMAGNETIC DISTURBANCES

Show simple item record

dc.contributor.author Fernández de Campra P.
dc.contributor.author Zossi de Artigas M.
dc.date.accessioned 2022-10-22T08:56:25Z
dc.date.available 2022-10-22T08:56:25Z
dc.date.issued 2004
dc.identifier https://elibrary.ru/item.asp?id=31266281
dc.identifier.citation Geofisica International, 2004, 43, 1, 113-117
dc.identifier.issn 0016-7169
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/39000
dc.description.abstract Auroral indices AE, AU, AL, and Troshichev index from Thule, PC (Polar Cap) are compared for geomagnetic disturbances of different intensities. To identify perturbations, the indices Dst and AE have been used. Fourteen storms have been analyzed, with Dst index minimum value between –50 nT and –600 nT (86% of them are great storms). The correlation coefficient, r, between AE and PC is above 0.65 for all storms analyzed. For AL index the correlation values are close to those of AE; but r is low for AU index. Thirty-five substorms were identified, with AE maximum values between 271 nT and 2218 nT. Eighty-one percent of them have a correlation coefficient between AE and PC above 0.6 and 47% above 0.8. The values obtained do not depend on disturbance intensity. The results suggest that PC index can be used as a fast indicator of global magnetic activity in the auroral oval even during great disturbances.
dc.subject Geomagnetic storms
dc.subject geomagnetic substorms
dc.subject geomagnetic indices
dc.subject polar cap index
dc.title COMPARISON BETWEEN INDICES DURING GEOMAGNETIC DISTURBANCES
dc.type Статья


Files in this item

Icon
Name: Fern_04.pdf
Size: 573.3Kb
Format: PDF
View/Open

This item appears in the following Collection(s)

  • ELibrary
    Метаданные публикаций с сайта https://www.elibrary.ru

Show simple item record