The crustal structure in terms of crustal thickness, shear wave velocities and Poisson's ratio plays a crucial role in understanding and/or deciphering the tectonic setting and its evolution. The receiver function analysis, H–K stacking and inversion techniques are the widely used tools to determine these parameters. In the present study, the data obtained from the first-ever established broadband seismological observatory at Larsemann Hills, East Antarctica has been utilized for the P receiver function (PRF) analysis and H–K stacking to decipher the crustal thickness, Poisson's ratio and the intra-crustal layer. Further, the obtained PRFs were inverted using Bayesian inversion to get the crustal structure. The results obtained from H–K analysis reveal a crustal thickness of ∼37.9 km and the corresponding Poisson's ratio is 0.19. The inversion technique also yielded consistent results, indicating a Moho depth of ∼37 km with a velocity jump from 4.1 km/s to 4.6 km/s and an intra-crustal layer at around 16 km with a velocity jump from 3.95 km/s to 4.06 km/s. It indicates a Poisson's ratio of 0.20. These findings suggest that the crust beneath the Larsemann Hills is felsic in nature and has high crustal shear wave velocity. Further, the variation in the crustal thickness along the coast of the Princess Elizabeth Land (PEL) region, ranging from 37.9 km to 36 km with the intra-crustal layer variation from 16 km to 13 km distinguishes the Neoproterozoic Larsemann Hills from the Archean-Mesoproterozoic Vestfold Hills.

地壳厚度、剪切波速度和泊松比方面的地壳结构在理解和/或破译构造环境及其演化方面起着至关重要的作用。接收函数分析、H-K 叠加和反演技术是广泛使用的确定这些参数的工具。在本研究中，从位于东南极洲拉瑟曼山的第一个宽带地震观测站获得的数据已用于 P 接收函数 (PRF) 分析和 H-K 叠加，以破译地壳厚度、泊松比和地壳内层。此外，使用贝叶斯反演对获得的PRF进行反演以获得地壳结构。H-K分析结果显示地壳厚度约为37.9 km，相应的泊松比为0.19。反演技术也得到了一致的结果，表明莫霍面深度约为 37 km，速度从 4.1 km/s 跃升至 4.6 km/s，地壳内层位于 16 km 左右，速度从 3.95 km/s 跃升至 4.6 km/s。 4.06 公里/秒。它表示泊松比为 0.20。这些发现表明，拉斯曼山下方的地壳本质上是长英质的，并且具有很高的地壳剪切波速度。此外，伊丽莎白公主地 (PEL) 地区沿海地壳厚度变化范围为 37.9 公里至 36 公里，地壳内层变化范围为 16 公里至 13 公里，这将新元古代拉瑟曼山与太古宙区分开来。中元古代西福尔丘陵。