Horizontal structure of sporadic e layer observed with a rocket-borne magnesium ion imager

J. Kurihara, Y. Koizumi-Kurihara, N. Iwagami, T. Suzuki, A. Kumamoto, Takayuki Ono, M. Nakamura, M. Ishii, A. Matsuoka, K. Ishisaka, T. Abe, S. Nozawa

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9 Citations (Scopus)

Abstract

To study the spatial structure of midlatitude sporadic E (Es) layers, the ultraviolet resonant scattering by magnesium ions (Mg+) in an Es layer was observed during the evening twilight with the Magnesium Ion Imager (MII) on the sounding rocket launched from the Uchinoura Space Center in Kagoshima, Japan. The in situ electron density measured by an onboard impedance probe showed that the Es layer was located at an altitude of 100 km during both the ascent and descent of the flight. Simultaneous observation with a ground-based ionosonde at Yamagawa identified the signature of horizontally "patchy" structures in the Es layer. The MII successfully scanned the horizontal Mg+ density perturbations in the Es layer and found that they had patchy and frontal structures. The horizontal scale and alignment of the observed frontal structure is generally consistent with a proposed theory. To our knowledge, this is the first observation of the two-dimensional horizontal structure of Mg + in an Es layer.

Original languageEnglish
Article numberA12318
JournalJournal of Geophysical Research: Space Physics
Volume115
Issue number12
DOIs
Publication statusPublished - 2010 Jan 1

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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    Kurihara, J., Koizumi-Kurihara, Y., Iwagami, N., Suzuki, T., Kumamoto, A., Ono, T., Nakamura, M., Ishii, M., Matsuoka, A., Ishisaka, K., Abe, T., & Nozawa, S. (2010). Horizontal structure of sporadic e layer observed with a rocket-borne magnesium ion imager. Journal of Geophysical Research: Space Physics, 115(12), [A12318]. https://doi.org/10.1029/2009JA014926