Antarctic geothermal heat flow model: Aq1

We present a refined map of geothermal heat flow for Antarctica, Aq1, based on multiple observables. The map is generated using a similarity detection approach by attributing observables from geophysics and geology to a large number of high-quality heat flow values (5792) from other continents. Observables from global, continental and regional datasets for Antarctica are used with a weighting function that allows the degree of similarity to increase with proximity and how similar the observables are. The similarity detection parameters are optimized through cross-correlation. For each grid cell in Antarctica, a weighted average heat flow value and uncertainty metrics are calculated.

本报告呈现了一幅基于多种观测数据的南极洲地热流精细地图，即Aq1地图。该地图通过相似度检测方法生成，将来自地球物理学和地质学的观测数据赋予众多高质量的地热流值（共计5792个）之中，这些高质量的地热流值来源于其他大洲。在构建过程中，利用全球、洲际及区域数据集的南极洲观测数据，并结合一个加权函数，该函数使得相似度随距离的缩短和观测数据的相似程度而提升。通过交叉相关优化相似度检测参数。对于南极洲的每个网格单元，计算其加权平均地热流值及不确定性指标。