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

横贯南极山脉（TAM）的地壳结构反映了东、西南极洲相互作用和构造历史的重要细节。然而，对TAM岩石圈结构的了解相对较少。为了区分各种解释TAM隆升演化的模型，需要对TAM下岩石圈结构进行严格的约束。本次调查将在TAM的两个位置使用陆基数字地震记录阵列，以获得靠近Terra Nova湾和Wright山谷的TAM前沿的两个密集记录的地震剖面。在1988/ 1989年的野外季节，德意志联邦共和国的Bundesanstalt fur Geowissenschaften将与GANOVEX-V考察队一起提供大型海上气枪地震源。地震波形建模将与阵列处理技术结合使用，以得出TAM岩石圈速度结构的最大约束条件。地震结果将与位势场数据和地球化学数据相结合，以确定TAM结构、组成和构造演化的最合适模型。

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.