Speaker
Description
The study of planetary magnetospheres boundaries (bow shocks and magnetopauses or induced magnetopauses) is important to study solar wind magnetosphere physical processes. Thus their identification from in situ spacecraft data is of great importance. In this work we present a method based on the Haar wavelet decomposition technique applied to magnetic field measurements from spacecraft in different planetary magnetospheres. Cases of application to Saturn (Cassini mission) and Mercury (MESSENGER mission) are presented. The methodology based on variance obtained by scale and edge identifications was shown to be a simple tool to perform this task. The results confirm that the Haar transform can efficiently identify the planetary magnetosphere boundaries characterized
by the abrupt magnetic field changes. This technique could be applied elsewhere in the heliosphere to identify abrupt variations in plasma and magnetic field parameters (interpanetary shocks, discontinuities).