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Abstract

This work presents a study on geomagnetic micropulsations at Santa Maria (27°S, 53 ° W) situated near the center of the South Atlantic Anomaly in Brazil. The geomagnetic field measurements were done by a very sensitive low noise fluxgate magnetometer; the data for the period March-May 1991 were analyzed using standard power spectrum Fourier techniques. From the power spectrum and polarization characteristics observed for Pc 3 and Pc 4 pulsations in selected quite days, it seems that Santa Maria is situated beyond the range of the Appleton Equatorial Anomaly Region. The results are comparable to those of other low-latitude stations.

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/content/papers/10.3997/2214-4609-pdb.313.36
1995-08-20
2021-10-25
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609-pdb.313.36
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