SAVNET

South Atlantic Very Low Frequency NETwork

Lead Scientist: Prof. Jean-Pierre Raulin
Organization: Universidade Presbiteriana Mackenzie, Brazil
Objective: Study of the South Atlantic Magnetic Anomaly (SAMA)  region at low ionospheric altitudes and its structure and dynamics during geomagnetic perturbations

This VLF network will be deployed in a region where the coverage at similar frequencies is currently very poor. This will allow the study of the SAMA region at low ionospheric altitudes and its structure and dynamics during geomagnetic perturbations. The monitoring of transient solar phenomena will improve our knowledge of the low ionosphere and of the chemical processes occurring there. On longer time scales we will be able to define a ionospheric index of the solar activity characteristic of the ionizing agent of the low ionosphere (EUV and Ly-alpha). Currently these are poorly monitored and only accessible through models. The proposed instrument will also permit the study of the VLF counterpart of newly discovered atmospheric phenomena related to lightning and thunderclouds. The proposed science is relevant to IHY themes: Impact of Space Weather phenomena on the Earth Climate; Ionosphere/Magnetosphere.

Five network sites will be chosen with respect to the South Atlantic Magnetic Anomaly region.


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