Ship-to-shore Seismic Refraction Investigation of the Lithospheric Structure of the Transantarctic Mountain Front

横贯南极山脉（TAM）的地壳结构 反映了有关相互作用的重要细节， 东南极洲和西南极洲的构造历史。 然而，相对而言， 关于TAM的岩石圈结构知之甚少。 TAM下方岩石圈结构的强约束 需要区分提出的各种模型， 解释了TAM隆起的演化。 本次调查将使用 位于两个地点的陆基数字地震记录阵列， TAM获得两个密集记录的地震剖面， 泰拉诺瓦湾附近和赖特山谷的TAM前线。 的 Bundesanstalt fur Geowissenschaften，联邦共和国德国， 将提供大型海洋气枪震源， 在1988/89赛季与GANOVEX-V远征队合作。 地震波形建模将与阵列结合使用 用于导出TAM的最大约束的处理技术 岩石圈速度结构 地震结果将是 与重力场数据和地球化学数据相结合， 确定最合适的TAM结构模型， 构造演化。

The crustal structure of the Transantarctic Mountains (TAM) reflects significant details concerning the interaction and tectonic histories of East and West Antarctica. Yet, relatively little is known about the lithospheric structure of the TAM. Strong constraints on the lithospheric structure beneath the TAM are needed to discriminate between various models put forth to explain the evolution of TAM uplift. This investigation will use a land-based digital seismic recording array at two location in the TAM to obtain two densely recorded seismic profiles across the TAM Front near Terra Nova Bay and in the Wright Valley. The Bundesanstalt fur Geowissenschaften, Federal Republic of Germany, will provide large marine airgun seismic sources in conjunction with the GANOVEX-V Expedition during the 1988/89 field season. Seismic waveform modeling will be used in conjunction with array processing techniques to derive maximum constraints on TAM lithospheric velocity structure. Seismic results will be integrated with geopotential field data and geochemical data to determine the most appropriate models of TAM structure, composition, and tectonic evolution.