Three-dimensional ionospheric conductivity associated with pulsating auroral patches: reconstruction from ground-based optical observations

Fukizawa, Mizuki; Tanaka, Yoshimasa; Ogawa, Yasunobu; Hosokawa, Keisuke; Raita, Tero; Kauristie, Kirsti

doi:https://doi.org/10.5194/angeo-41-511-2023

Articles | Volume 41, issue 2

https://doi.org/10.5194/angeo-41-511-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Special issue on the joint 20th International EISCAT Symposium...

https://doi.org/10.5194/angeo-41-511-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 41, issue 2

Regular paper

|

20 Nov 2023

Regular paper |

| 20 Nov 2023

Three-dimensional ionospheric conductivity associated with pulsating auroral patches: reconstruction from ground-based optical observations

Mizuki Fukizawa, Yoshimasa Tanaka, Yasunobu Ogawa, Keisuke Hosokawa, Tero Raita, and Kirsti Kauristie

Data sets

Subset of the MIRACLE emCCD all-sky camera data at 427.8 nm from ABK and KIL on 18 Feb 2018 00-02 UT T. Raita and K. Kauristie https://doi.org/10.23729/e86df44b-8dad-44e5-89f3-4bea0d3d1236

Watec observation database in NIPR for 55.7 nm at TRO Y. Ogawa http://esr.nipr.ac.jp/www/optical/watec/tro/awi/rawdata/

Watec observation database in NIPR for 55.7 nm at KIL Y. Ogawa http://esr.nipr.ac.jp/www/optical/watec/kil/awi/rawdata/

Watec observation database in NIPR for 55.7 and 427.8 nm at SKB Y. Ogawa http://esr.nipr.ac.jp/www/optical/watec/skb/awi/rawdata/

EISCAT database in NIPR Y. Ogawa http://pc115.seg20.nipr.ac.jp/www/eiscatdata/

Video supplement

Auroral images used in Fukizawa et al. (2023, ANGEO) M. Fukizawa https://doi.org/10.5446/63189

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Short summary

We use computed tomography to reconstruct the three-dimensional distributions of the Hall and Pedersen conductivities of pulsating auroras, a key research target for understanding the magnetosphere–ionosphere coupling process. It is suggested that the high-energy electron precipitation associated with pulsating auroras may have a greater impact on the closure of field-aligned currents in the ionosphere than has been previously reported.