Radio signal anomalies detected with MEXART in 2012 during the recovery phase of geomagnetic storms

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• 作者：Armando Carrillo-Vargas^a ; ^{armando@geofisica.unam.mx" class="auth_mail" title="E-mail the corresponding author} ; Romá ; n Pé ; rez-Enrí ; quez^b ; ^{roman@geociencias.unam.mx" class="auth_mail" title="E-mail the corresponding author} ; Rebeca Ló ; pez-Montes^c ; ^{rebecamont@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; ^{rebeca@geofisica.unam.mx" class="auth_mail" title="E-mail the corresponding author} ; Mario Rodrí ; guez-Martí ; nez^d ; ^{mrodriguez@enesmorelia.unam.mx" class="auth_mail" title="E-mail the corresponding author} ; Luis Gerardo Ugalde-Calvillo^e ; ^{luisugalde@ciencias.unam.mx" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ionospheric disturbances ; Geomagnetic storms ; MEXART
• 刊名：Advances in Space Research
• 出版年：2016
• 出版时间：15 November 2016
• 年：2016
• 卷：58
• 期：10
• 页码：2057-2066
• 全文大小：4638 K

文摘

In this work we present MEXART observations in 2012 from 17 radio sources in which we detected anomalies in the radio signal of these sources occurring during the recovery phase of some geomagnetic storms. We performed FFT and wavelet analysis of the radio signals during these periods and found that rather than IPS the anomalies seem to originate in the ionosphere, especially because of the frequencies at which they are observed. We discuss this results under the view that the source of the geomagnetic storm is no longer in the interplanetary medium.