Equipment Development for Magnetic Measure - Linear Nucleus Fluxgate Magnetometer
- Paper number
IAC-06-B1.P.1.04
- Author
Mr. Cassio Espindola Antunes, Laboratório de Ciências Espaciais de Santa Maria, LACESM/CT - UFSM and Centro Regional Sul de Pesquisas Espaciais, CRSPE/INPE - MCT, Brazil
- Coauthor
Mr. Eduardo Andrighetto, Brazil
- Coauthor
Mr. Severino L. Guimarães Dutra, Instituto Nacional de Pesquisas Espaciais (INPE), Brazil
- Coauthor
Mr. Nalin Babulau Trivedi, Instituto Nacional de Pesquisas Espaciais (INPE), Brazil
- Coauthor
Mr. Nelson Jorge Schuch, Brazil
- Year
2006
- Abstract
The Earth has a time variable magnetic field which originates several geophysical phenomena. The Geomagnetics variations study can show important information about the Magnetosphere, the interaction Earth/Sun, as well as events occurrences in Ionosphere which can, for instance, generate disturbances in telecommunications or even in the space climate. The data collection on the Terrestrial Magnetic Field has great importance to enlarge the knowledge regarding the phenomena and the behavior of the terrestrial magnetosphere. To accomplish larger studies and analyses on the Geomagnetic Field in the area of South Atlantic Magnetic Anomaly – SAMA, that is, the area where is observed the smallest intensity of the Earth’s magnetic field in the Earth’ surface; it has been developed in the Southern Regional Space Research Center – CRSPE/INPE–MCT in Brazil, a fluxgate magnetometer of linear nucleus..The saturated nucleus magnetometer developed is based on the non linear properties of high magnetic permeability in iron magnetic materials. A magnetic saturation in high frequency is created in a iron magnetic nucleus by an excitement coil, varying the magnetic permeability of this nucleus. The magnetic saturation created by the excitement coil in the non linear region of the histerese curve BxH generates a sign in the output of a second coil, coiled on the nucleus, with a large harmonic content and with variables characteristics in agreement with the external field that surrounds the magnetic nucleus. It is possible to discover the Geomagnetic Field behavior analyseing the harmonic content of the sign. The equipment was implemented and tested with success, collecting data of the Geomagnetic Field in days of normal solar activity and in periods of magnetic storms Due to the big measures range and the low noise level, as well as the equipment stability in a long time, the fluxgate magnetometers are very good to assist geomagnetics observatories.
- Abstract document
- Manuscript document
IAC-06-B1.P.1.04.pdf (🔒 authorized access only).
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