@article{oai:nipr.repo.nii.ac.jp:00003698,
 author = {アオキ, シュンジ and ナカザワ, タカキヨ and ムラヤマ, ショウヘイ and カワグチ, サダオ and AOKI, Shuhji and NAKAZAWA, Takakiyo and MURAYAMA, Shohei and KAWAGUCHI, Sadao},
 journal = {Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology},
 month = {Feb},
 note = {P(論文), Precise measurements of atmospheric CH_4 concentration was initiated at Syowa Station in February 1988. A regular diurnal variation is not observable but irregular variations are sometimes observed with extremely small amplitude of 5 ppbv at most. A seasonal variation is clearly seen with the amplitude of 30 ppbv. Annual mean values of CH_4 concentration are 1640 and 1651 ppbv for 1988 and 1989,respectively.},
 pages = {56--65},
 title = {PRECISE MEASUREMENTS OF ATMOSPHERIC METHANE CONCENTRATION AT SYOWA STATION (69°00'S, 39°35'E), ANTARCTICA},
 volume = {5},
 year = {1992}
}