@article{oai:nipr.repo.nii.ac.jp:00001127,
 author = {Itonaga, Masahiro and Saka, Ousuke and Kitamura, Tai-Ichi},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Mar},
 note = {P(論文), The sunrise effect for Pc3 and Pc4 bands was confirmed from the long-term continuous data obtained at Aso (22°N, 198°in geomagnetic coordinate) by an induction magnetometer. The D component of the pulsations increases with the sunrise. This D component increment causes the major axis rotation of the H-D plane ellipse, but hardly influences the ellipticity. This means that the D component increment is due to the ionospheric conductivity enhancement in association with the sunrise.},
 pages = {152--160},
 title = {Effects of the Sunrise on Polarization Characteristics of Low-Latitude Pc3-4 Band Micropulsations},
 volume = {18},
 year = {1981}
}