X-ray intensity, ozone density, and VLF wave intensity observed by scientific balloon experiments at Esrange

• Main Authors: Masaki Ejiri, Masaru Ayukawa, Hisao Yamagishi, Takayuki Ono, Takeo Hirasawa, Tetsuo Kamada, Masahiro Kodama, Yo Hirasima, Toshihiro Ogawa, Naomoto Iwagami, Takamasa Yamagami
• Format: Report
• Language: English
• Published: National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/Research Institute of Atmospherics, Nagoya University/Yamanashi Medical College/Rikkyo University/University of Tokyo/University of Tokyo/The Institute of Space and Astronautical Science 1982
• Subjects: Esrange; Kiruna; Syowa Station; Antarc*; Antarctica; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1266; http://id.nii.ac.jp/1291/00001266/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1266&item_no=1&attribute_id=18&file_no=1

The first Japanese scientific balloon experiment at Esrange, Kiruna, Sweden was carried out on September 10 and 11,1980,in order to obtain vertical profiles of X-ray intensity, ozone density, and VLF wave spectrum intensity at a northern high-latitude. Since there were very quiet geomagnetic conditions for two balloon flights, observational results reveal a typical quiet time X-ray intensity profile and an ozone vertical profile in the high-latitude autumn. No evident VLF emissions associated with an auroral activity were observed, except for noises of power line radiation and lightning noises from Africa. Ground-based observations of the three components of geomagnetic field, cosmic noise absorption, pulsations and VLF waves were made in conjunction with the one month campaign and the data corresponding to several substorms were analyzed and compared with observations at the Syowa Station, Antarctica.