Документы

Energetic Electron precipitation (EEP) is an important magnetospheric substorm manifestation. EEP produces Cosmic Noise Absorption (CNA), braking radio- wave communication. Thus EEP and CNA modeling is a significant Space Weather problem. Existing empirical EEP/CNA models are based on daily/hour geomagnetic indices (Ap or AE), not appropriate for substorms. Our CNA model is based on the mid-latitude positive bay (MPB) index, which is the square of magnetic field horizontal component (H2 =X2 +Y2 ) at mid-latitude stations (McPherron&Chu,2017). As one of the main substorm acceleration mechanisms is betatron acceleration, CNA should be proportional to magnitude of dipolarization at the magnetospheric equator, which was shown to be proportional to mid-latitude H variation. We use the linear prediction filter (LPF) technique connecting the current CNA value with MPB values during 4 preceding hours. The array of increments of square root of MPB index is the input, Canadian riometer data serving as output. LPFs are constructed with 5-min resolution for the center of the auroral zone (65-750 CGL) for all MLT sectors. The obtained response functions permit to calculate the CNA variation for substorms of arbitrary form and duration. The method was tested on a long disturbed interval and on independent Scandinavian riometer data with satisfactory result.
Переведенное названиеРеконструкция аврорального поглощения радиоволн во время магнитосферной суббури
Язык оригиналаанглийский
Название основной публикацииEuropean Space Weather Symposium (ESWS2020)
Подзаголовок основной публикацииAbstract Book and Programme
ИздательIOP Publishing Ltd.
Страницы23-24
Число страниц1
СостояниеОпубликовано - 1 ноя 2020
СобытиеEuropean Space Weather Symposium -
Продолжительность: 2 ноя 20206 ноя 2020

конференция

конференцияEuropean Space Weather Symposium
Сокращенное названиеESWS2020
Период2/11/206/11/20

    Предметные области Scopus

  • Физика и астрономия (все)

    Области исследований

  • авроральное поглощение, магнитосферная суббуря

ID: 92035129