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本文认为跨断层短基线年周变并非由基线尺温度改正不合理以及地球自转引起断层年周期活动所造成的,而是由于岩石热胀冷缩的物理性质所造成的。 文中通过钢轨热胀冷缩这一常见的物理现象,结合大量基线资料和岩石力学知识,阐述了断层同盘岩石的端部效应与断层两盘岩体在裂缝处的双倍效应以及由此产生的基线正、负年周变。文章最后总结了年周变的规律,对其在地震、地质、测绘等部门的用途进行了初步的探讨。
This paper argues that the annual variation of the short baseline of cross-fault is not caused by the unreasonable temperature correction of the baseline ruler and the annual periodic activities of the earth caused by the rotation of the earth, but due to the physical properties of the rock due to thermal expansion and contraction. In this paper, by means of the common physical phenomenon of thermal expansion and contraction of rail, combined with a large amount of baseline data and knowledge of rock mechanics, the end effect of the same plate of fault and the double effect of the two plate bodies in the fault and the resulting crack The baseline is positive, negative years change. Finally, the article summarizes the law of the years, and its use in the earthquake, geology, surveying and mapping and other departments for a preliminary discussion.