Application of airborne geophysical survey in antarctica
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摘要: 航空地球物理勘探是认识极地区域构造的重要技术手段。在回顾和分析南极航空地球物理勘探发展历史与现状的基础上,总结归纳了航空地球物理勘探在南极地区取得的主要成果。归纳出南极地壳结构研究、南极古大陆重建与恢复、南极火山与岩浆作用调查和南极冰架与地质相互作用研究等4方面典型实例,航空地球物理勘探为南极地区域地质构造研究提供了有效的技术支撑。目前,南极部分区域仍为航空地球物理勘探的空白区,可将成功的经验应用于下一步的实际工作中,特别是将航空重、磁方法与航空冰雷达探测方法相结合,已成为解决南极冰层与基岩相互作用问题的未来趋势,也为我国南极航空地球物理勘探提供了方向。Abstract: Airborne geophysical techniques represent a cost-effective way for obtaining insights into the crustal geology of the Antarctic. Based on the analysis of the history of Antarctic airbrone geophysical survey and development of facilities and fly-platform applied in the survey, this paper gives a review of the leading scientific application topic of airborne geophysical data i.e.,the crustal structure of Antarctica,the reconstruction and restoration of ancient terrains, magmatism and volcanism identification,and the interaction between Antarctica Ice Shelf and bed rock, which shows that airborne geophysical survey provides effective technical support for Antarctica geosciences research.Our research shows that there is still a blank area for geophysical survey. Based on out review, the combination of airborne magnetic, airborne gravity and ice radar data has provide a new solution to the interaction study of Antarctic Ice shelf and bedrock.
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