Lithospheric thicknesses in Antarctica from Sp receiver functions

This dataset contains the depths of negative velocity gradients that are potentially interpretable as the lithosphere-asthenosphere boundary (LAB) beneath Antarctica, derived from common conversion point stacking of Sp receiver functions. The dataset provides constraints on lithospheric thickness variations, particularly in West Antarctica, where a vertically localized LAB is observed at depths of 70–100 km. In East Antarctica, two zones of well-defined LAB depths are present in regions near the coast at depths of 75-110 km (~140˚E) and 90-130 km (~115˚E). Interpretation of these results and comparison with prior studies are provided in the associated journal article (see References).

本数据集包含可被解释为南极洲下方岩石圈-软流圈边界（Lithosphere-Asthenosphere Boundary, LAB）的负速度梯度深度数据，该数据通过对Sp接收函数（Sp receiver functions）开展共转换点叠加（common conversion point stacking）处理得到。本数据集为岩石圈厚度变化提供了约束依据，尤其针对西南极地区——该区观测到垂直局部分布的LAB，其埋藏深度介于70~100 km之间。东南极存在两个LAB深度明确的近岸区域：一处位于经度约140°E附近，埋藏深度为75~110 km；另一处位于经度约115°E附近，埋藏深度为90~130 km。相关学术期刊论文（详见参考文献）中包含了对本研究结果的解读，以及与既往研究的对比分析。