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Extremely low frequency band station for natural electromagnetic noise measurement
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
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2015 (English)In: Radio Science, ISSN 0048-6604, E-ISSN 1944-799X, Vol. 50, no 3, 191-201 p.Article in journal (Refereed) Published
Abstract [en]

A new permanent ELF measurement station has been deployed in Sierra Nevada, Spain. It is composed of two magnetometers, oriented NS and EW, respectively. At 10 Hz, their sensitivity is 19 V/pT and the signal-to-noise ratio (SNR) is 28 dB for a time-varying signal of 1 pT, the expected field amplitude in Sierra Nevada. The station operates for frequencies below 24 Hz. The magnetometers, together with their corresponding electronics, have been specifically designed to achieve such an SNR for small signals. They are based on high-resolution search coils with ferromagnetic core and 10(6) turns, operating in limited geometry configuration. Different system noise sources are considered, and a study of the SNR is also included. Finally, some initial Schumann resonance measurements are presented in order to validate the performance of the measurement station, including 1 h length spectra, daily variations of resonance amplitudes and frequencies for the different seasons, and a 3 day spectrogram.

Place, publisher, year, edition, pages
2015. Vol. 50, no 3, 191-201 p.
Keyword [en]
ELF station, Schumann resonance
National Category
Meteorology and Atmospheric Sciences Astronomy, Astrophysics and Cosmology Geophysics Geochemistry Remote Sensing
Identifiers
URN: urn:nbn:se:uu:diva-253271DOI: 10.1002/2014RS005567ISI: 000353686900002OAI: oai:DiVA.org:uu-253271DiVA: diva2:813898
Available from: 2015-05-25 Created: 2015-05-25 Last updated: 2017-12-04Bibliographically approved

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Toledo-Redondo, Sergio

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Toledo-Redondo, Sergio
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Swedish Institute of Space Physics, Uppsala Division
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Radio Science
Meteorology and Atmospheric SciencesAstronomy, Astrophysics and CosmologyGeophysicsGeochemistryRemote Sensing

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