Ionosonde observations at King George Island, Antarctica: 1986-1991

The ionospheric phenomena related to tropospheric forcing such as atmospheric gravity waves, are also of significant interest since the Antarctic Peninsula may be considered as a long (thousand km) and high (2 km mean height) barrier to the prevailing and strong westerly winds, being almost perpendicular to the barrier. To better assess some of the above indicated characteristics and phenomena, a project was developed which would need the latitudinal extension of available ionospheric observations for many years at Argentine Islands (S65, W64), Port Stanley (S52, W58) and Halley Bay (S76, W27). In particular, the scientific questions raised and partial results obtained from the data base presented here are (a) thermospheric irregularities , thermospheric winds and Sporadic Es.与对流层强迫相关的电离层现象（如大气重力波（atmospheric gravity waves））同样具备重要研究价值，究其原因，南极半岛可被视作对盛行强西风的长尺度（数千公里）、高海拔（平均高度2公里）屏障，且盛行西风几乎垂直于该屏障。 为更好地评估上述部分特征与现象，相关研究项目得以开展，该项目需要获取阿根廷群岛（S65, W64）、斯坦利港（S52, W58）以及哈雷湾（S76, W27）多年来的电离层观测数据的纬度分布序列。 具体而言，从本文呈现的数据库中衍生出的科学问题及已获得的部分研究结果包括：(1) 热层不规则体（thermospheric irregularities）、热层风（thermospheric winds）以及偶发E层（Sporadic Es）。