@article{oai:nipr.repo.nii.ac.jp:00001126,
 author = {Hirasawa, Takeo},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Mar},
 note = {P(論文), Changes in the spectrum of ULF emissions associated with ssc's and si's are investigated on the basis of the frequency-time displays (f-t diagrams) obtained at Syowa and Mizuho Stations, Antarctica and it is concluded that the spectral structures of ULF emissions with frequency above 0.1Hz are strongly affected by the magnetospheric compression and expansion which are accompanied by ssc's and positive and negative si's.},
 pages = {127--151},
 title = {Effects of Magnetospheric Compression and Expansion on Spectral Structure of ULF Emissions},
 volume = {18},
 year = {1981}
}