Interpretation of gravimetric and magnetic data in the region of North-Victoria-Land, Antarctica, concerning the structure of the crust and the lay-out of major fault systems

北维多利亚陆地与南极洲罗斯海毗邻，是联邦地球科学和自然资源研究所(Bundesanstalt für Geowisenschaften and Rohstoffe，BGR，汉诺威)的主要研究区域。在仍在进行的项目框架内，主要侧重于来自重力和磁场的现有数据集，它们的评估和同质化，以及它们作为建模数据库的使用。ESP.来自意大利同事的数据可能会弥补磁异常数据中的一大差距。在地质发现和地质构造信息的基础上，首次建立了北维多利亚大陆的三维重力模型。在这些工作中，对进一步研究和相关方面的调查提出了要求。需要更详细地研究不同比例尺的建模和数据研究，特别是地形减少的影响。冰块的重力影响、异常场的波长滤波以及异常中模拟构造的剥离是进一步研究的方向。这些调查将允许更详细地描述不同的地质结构。最后，主要目的将是在新的势场模拟的基础上，对研究区的地球动力学演化进行新的解释。

North-Victoria Land with the adjacent Ross Sea, Antarctica, is one main research area of the Federal Institute for Geosciences and Natural Resources (Bundesanstalt für Geowissenschaften und Rohstoffe, BGR, Hannover). In the frame of the still running project, the main focus was on the existing data sets from gravity and magnetic fields, their evaluation and homogenisation, and their appropriation as data base for modelling. Esp. a big gap in the magnetic anomaly data could be closed by data from the Italian colleagues. On the basis of geological findings and geo-tectonic information, a first three-dimensional gravity model for North-Victoria-Land was developed. During these works, the requirement of further research and the investigation of associated aspects have developed. Modelling and data studies for different scales and, in particular, the effect of the topographic reduction need to be studied in more detail. The gravity influence of ice masses, the wavelength filtering of the anomaly fields, and the stripping of the modelled structures in the anomaly are further aspects. These investigations will allow characterizing the different geological structures much more detailed. At last, the main aim will be a new interpretation of the geodynamic evolution of the area under investigation on the basis of the new achieved modelling of the potential fields.