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Ionospheric Disturbances and Their Impact on IPS Using MEXART Observations |
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| Authors: | M Rodríguez-Martínez H R Pérez-Enríquez A Carrillo-Vargas R López-Montes E A Araujo-Pradere G A Casillas-Pérez J A L Cruz-Abeyro |
| Institution: | 1. Escuela Nacional de Estudios Superiores, Unidad Morelia, Universidad Nacional Autónoma de México, Campus Morelia, Antigua Carretera a Pátzcuaro No. 8701, Ex-Hacienda de San José de la Huerta, C.P. 58190, Morelia, Michoacán, Mexico 2. Centro de Geociencias, Universidad Nacional Autónoma de México, Campus Juriquilla, Blvd Juriquilla No. 3001, C.P. 76230, Juriquilla, Querétaro, Mexico 3. Instituto de Geofísica, Unidad Michoacán, Universidad Nacional Autónoma de México, Campus Morelia, Antigua Carretera a Pátzcuaro No. 8701, Ex-Hacienda de San José de la Huerta, C.P. 58190, Morelia, Michoacán, Mexico 4. CIRES-University of Colorado, 325 Broadway W/NP9, Boulder, CO, USA 5. Instituto de Geofísica, Unidad de Cómputo, Universidad Nacional Autónoma de México, Ciudad Universitaria, C.P. 04510, México, D.F., Mexico |
| Abstract: | We study the impact of ionospheric disturbances on the Earth’s environment caused by the solar events that occurred from 20 April to 31 May 2010, using observations from the Mexican Array Radio Telescope (MEXART). During this period of time, several astronomical sources presented fluctuations in their radio signals. Wavelet analysis, together with complementary information such as the vertical total electron content (vTEC) and the Dst index, were used to identify and understand when the interplanetary scintillation (IPS) could be contaminated by ionospheric disturbances (IOND). We find that radio signal perturbations were sometimes associated with IOND and/or IPS fluctuations; however, in some cases, it was not possible to clearly identify their origin. Our Fourier and wavelet analyses showed that these fluctuations had frequencies in the range ≈?0.01 Hz?–?≈?1.0 Hz (periodicities of 100 s to 1 s). |
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