Development of ground-based search-coil magnetometer for Near-Earth space research

Document Type

Article

Publication Date

1-1-2016

Abstract

We report on development of a ground-based bi-axial Search-Coil Magnetometer (SCM) designed to measure time-varying magnetic fields associated with magnetosphere-ionosphere coupling processes. The instrument provides two-axis magnetic field wave vector data in the Ultra Low Frequency or ULF (1 mHz to 5 Hz) range. ULF waves are well known to play an important role in energy transport and loss in geospace. The SCM will primarily be used to observe generation and propagation of the subclass of ULF waves. The analog signals produced by the search-coil magnetic sensors are amplified and filtered over a specified frequency range via electronics. Data acquisition system digitizes data at 10 samples/s rate with 16-bit resolution. Test results show that the resolution of the magnetometer reaches 0.1 pT/√Hz at 1 Hz, and demonstrate its satisfactory performance, detecting geomagnetic pulsations. This instrument is scheduled to be installed at the Korean Antarctic station, Jang Bogo, in the austral summer 2016-2017.

Identifier

85008937491 (Scopus)

Publication Title

Journal of Magnetics

External Full Text Location

https://doi.org/10.4283/JMAG.2016.21.4.509

ISSN

12261750

First Page

509

Last Page

515

Issue

4

Volume

21

Fund Ref

University of New Hampshire

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