第21次南極地域観測隊越冬隊報告1980-1981

• Main Authors: 川口 貞男, Sadao Kawaguchi
• Format: Report
• Language: Japanese
• Published: 国立極地研究所 1983
• Subjects: Nihon Nankyoku Chiiki Kansokutai; Antarctic; Syowa Station; Mizuho; Mizuho Station; Antarc*; Antarctica; Sea ice
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=8338; http://id.nii.ac.jp/1291/00008338/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=8338&item_no=1&attribute_id=18&file_no=1

第21次南極地域観測隊越冬隊員33名は, 1980年2月1日から1年間, 「南極域気水圏観測」(POLEX-South)と「鉱物資源に関する基礎調査」の重点観測をはじめとして, 極光, 地磁気, 電離層, 気象, 自然地震, 潮汐のいわゆる定常観測や, 生物, 医学, 超高層物理の研究観測を行った。POLEX-Southでは, 前次隊からの観測を引き続き行うとともに, あらたにみずほ基地で高層気象観測を行い, カタバ風領域における接地逆転層の挙動を明らかにし, 昭和基地周辺海氷上では, 海氷表面の熱収支についての研究を行った。鉱物資源に関する基礎調査としては, 昭和, みずほ基地間約300kmの測線において, 人工地震による地殻構造の調査を, 成功裏に実施することができた。 The wintering party of the 21st Japanese Antarctic Research Expedition (1980-1981) consisting of 33 members carried out observations in many disciplines at Syowa Station and Mizuho Station, particularly laying emphasis on "Polar Experiment-South (POLEX-South)" as one of the subprogrammes of the Global Atmospheric Research Programme (GARP) and on "The studies of crustal structure of Antarctica" which started in the preceding year. Referring to POLEX-South, the aerological and micro-meteorological observations in order to clarify the behavior of the surface inversion layer and the aloft wind regime were carried out at Mizuho Station, and also the observations of heat budget at the surface of sea-ice were done near Syowa Station. Researches on the crustal structure by the long seismic refraction method were carried out successfully along a 300km long profile from Syowa to Mizuho Stations. At Syowa Station, in addition to the routine observations of aurora, geomagnetism, ionosphere, meteorology, seismology, and ocean tide, the studies of ionospheric disturbance, medical science and biology were performed throughout the year.