多道地震拖曳阵过去常被用来调查沉积层,本文则描述用它来勘探火成岩地壳的实验情况。在太平洋板块两个相隔很远的地区——日本海沟东面和太平洋东隆顶部——用多道拖曳阵进行了地震勘探实验。结果是两个地区均揭示有来自莫霍面的强反射。其他实验也表明,火成岩地壳内存在反射层。如太平洋东隆、弗林海台外部、挪威海和加勒比海。本文还讨论适用于深地壳研究的数据采集和处理新技术。这些新技术包括扩展排列、恒定偏移距剖面和“阵放大”技术,它们均需使用两条工作船,並需把地震数据转换至τ—P域进行分析。 Multi-channel seismic drag arrays have traditionally been used to investigate sediments, and this article describes the experiments used to explore igneous crust. Seismic exploration experiments were conducted with multiple drag arrays in two remote areas of the Pacific Plate, east of the Japan Trench and at the top of the Pacific Rim. The result is that both regions reveal strong reflections from the Moho. Other experiments have also shown that there are reflective layers in the igneous crust. Such as Pacific Rung Lung, Flynn Terrace, the Norwegian Sea and the Caribbean Sea. This article also discusses new techniques for data acquisition and processing applicable to deep crust studies. These new technologies include extended alignment, constant offset profiles, and “Array Magnification”, both of which require the use of two workboats and the seismic data must be converted to the τ-P domain for analysis.