两三年前,北冰洋工作队的日工作量及记录质量都很差。这就引起了用冰下系统改造这种状况的兴趣。但冰上勘探队的工作继续下来了,而且现在在冰上工作的队以高生产率获得了优质资料。早期工作的质量受冰复盖层产生的水平相干噪声的影响较大。由于使用了小药量,因而降低了相干噪声。垂直的线性震源进一步降低了相干噪声水平。本文涉及到了使用垂直冰上水线震源的特点。假定水线药包的几何形状位于前述范 Two or three years ago, the Arctic Task Force’s daily workload and quality of records were poor. This has given rise to an interest in rebuilding this condition with the ice system. However, the work of the ice exploration team has continued, and the teams working on ice now receive high-quality data at high productivity. The quality of early work is greatly affected by horizontal coherent noise produced by ice cover. Due to the small volume used, coherent noise is reduced. Vertical linear vibrators further reduce the level of coherent noise. This article relates to the use of vertical ice water source characteristics. It is assumed that the geometry of the waterline package lies in the aforementioned range