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 (N = 5,792) 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. The Aq1 model provides higher spatial resolution in comparison to previous results. High heat flow is shown in the Thwaites Glacier region, with local values over 150 mW m⁻². We also map elevated values over 80 mW m⁻² in Palmer Land, Marie Byrd Land, Victoria Land and Queen Mary Land. Very low heat flow is shown in the interior of Wilkes Land and Coats Land, with values under 40 mW m⁻². We anticipate that the new geothermal heat flow map, Aq1, and its uncertainty bounds will find extended use in providing boundary conditions for ice sheet modeling and understanding the interactions between the cryosphere and solid Earth. The computational framework and open architecture allow for the model to be reproduced, adapted and updated with additional data, or model subsets to be output at higher resolution for regional studies.

中文翻译：

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南极地热热流模型：Aq1

我们基于多个观测值，给出了南极洲Aq1的地热热流的精确地图。使用相似性检测方法，通过将地球物理学和地质学的观测值归因于大量高质量热流值（N = 5,792）。来自南极洲的全球，大陆和区域数据集的可观测对象与加权函数一起使用，该函数允许相似程度随接近程度以及可观测对象的相似程度而增加。通过互相关来优化相似性检测参数。对于南极洲的每个网格单元，将计算加权平均热流值和不确定性度量。与以前的结果相比，Aq1模型提供了更高的空间分辨率。Thwaites冰川地区显示出高热流，局部热值超过150 mW m ^-2。我们还绘制了超过80 mW m ^-2的升高值在Palmer Land，Marie Byrd Land，Victoria Land和Queen Mary Land中。Wilkes Land和Coats Land内部的热量流非常低，其值低于40 mW m ^-2。我们预计，新的地热热流图Aq1及其不确定性范围将在为冰盖建模提供边界条件和了解冰冻圈与固体地球之间的相互作用方面得到广泛应用。计算框架和开放式体系结构允许对模型进行复制，修改和其他数据更新，或者以更高的分辨率输出模型子集用于区域研究。