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  Application of magneto-impedance (MI) sensor to geomagnetic field measurements for magnetoseismology

Nosé, M., Maeda, T., Nomura, H., Adachi, T., Yamamoto, Y., Kumamoto, A., Ishida, S., Kawano, T., Iwanaga, Y., Tatematsu, S. (2023): Application of magneto-impedance (MI) sensor to geomagnetic field measurements for magnetoseismology, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-2148

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Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018675 Versions-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018675_1
Genre: Konferenzbeitrag

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Nosé, Masahito1, Autor
Maeda, Taiki1, Autor
Nomura, Hiroshi1, Autor
Adachi, Takumi1, Autor
Yamamoto, Yuka1, Autor
Kumamoto, Atsushi1, Autor
Ishida, Sachinobu1, Autor
Kawano, Takeshi1, Autor
Iwanaga, Yoshihiro1, Autor
Tatematsu, Shunichi1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Zusammenfassung: Magneto-impedance (MI) effect was discovered about 30 years ago and a micro-size magnetic sensor that utilizes this effect becomes commercially available. Nosé et al. (2022, doi: 10.1029/2022JA030809) made some modifications to the commercially available MI sensors to cover the dynamic range of the geomagnetic field. For the period of March 30 to April 27, 2018, they conducted experimental observations of geomagnetic field variations with the MI sensors at the Mineyama observatory in Japan. Data obtained with the MI sensors are compared with those from the fluxgate magnetometer (FGM) that has been working at the observatory. Results showed that the MI sensors can record geomagnetic field variations such as geomagnetic storms, Sq variations, low-latitude positive bays, SSC, and geomagnetic pulsations with a peak-to-peak amplitude of £ 1 nT that are also detected with the FGM. This study revealed that the MI sensor can measure the geomagnetic field variations in a period from a few tens of seconds to a few hours.<br>Using MI sensors, Raspberry Pi, low-cost 24-bit A/D converters, and stable power supply circuits, we developed a magnetometer with approximately $4,000, which is named MIM-Pi (MI sensor Magnetometer with Raspberry Pi). Because of its low cost, MIM-Pi provides an opportunity to construct a dense observation network of geomagnetic field. We are now deploying MIM-Pi in Kanto-Tohoku area. When we apply the magnetoseismology method to the data from such dense observation network, it will be possible to monitor fine structures of the plasma mass density distribution in the inner magnetosphere.

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Sprache(n): eng - Englisch
 Datum: 2023
 Publikationsstatus: Final veröffentlicht
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 Identifikatoren: DOI: 10.57757/IUGG23-2148
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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Veranstaltungsort: Berlin
Start-/Enddatum: 2023-07-11 - 2023-07-20

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Potsdam : GFZ German Research Centre for Geosciences
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