ダイ22ジ ナンキョク チイキ カンソク タイ エットウ タイ ホウコク 1981-1982

第22次日本南極地域観測隊越冬隊員34名は, 1981年2月1日から翌年1月31日まで, 3年計画の3年目に当たる「南極域気水圏観測計画(POLEX-South)」および「昭和基地を中心とする地域の地殻構造の総合解析」を重点観測項目とし, さらに, 極光, 地磁気, 電離層, 気象, 自然地震, 潮汐の定常観測, 超高層物理, 環境科学の研究観測を行った。POLEX-Southでは, みずほ基地で前次隊からの観測の多くを引き続き実施するとともに, 海抜3000mを超える内陸高原上での低層ゾンデ観測を含む移動による観測に重点をおいた。地学調査では, 基地における地盤傾斜観測の試みや, 航空磁気測量, 重力測定, リュツォ・ホルム湾の地殻熱流量測定, 海底地形地質調査, 内陸での隕石探査などが行われた。環境科学では, 環境汚染の研究が中心となった。また, 超高層物理では, 電算機導入とテレメトリーによる観測の採用により, 観測方式が一新され, 新たな段階への基礎が築かれた。Thirty-four men of the wintering party occupied Syowa Station and Mizuho Station from February 1,1981 to January 31,1982,carrying out observations in many scientific disciplines, particularly laying emphasis on "Polar Experiment-South (POLEX-South)" and on "The studies of crustal structure of the Lutzow-Holm Bay region" whose programs cover the last phase of the two threeyear projects. In the POLEX-South project, micro-meteorological and aerological observations were carried out in the inland plateau during the oversnow traverses, as well as micro-meteorology at Mizuho Station. Glaciological studies were also conducted at the same time. The studies of crustal structure consist of aeromagnetic survey, gravity measurement, heat flow measurement, ground-tilt measurement, and submarine geology and geomorphology. Meteorite search and glacial geomorphological survey were also carried out. In addition, aerial photography covered 80% of the Sor-Rondane Mountains region. At Syowa Station, besides the routine observations of aurora, geomagnetism, ionosphere, meteorology, seismology, and ocean tide, the studies of upper atmosphere physics including geophysical data reception from scientific satellites, environmental pollution, and medical science were conducted. In particular, the data aquisition system in the upper atmosphere physics was greatly improved, introducing the computer processing system and the data telemetering system from the newly-built automatic station about 4km apart from the main base