大震前予位移的讨论

• 作 者: 郭增建 秦保燕
• 机 构: 国家地震局兰州地震研究所,国家地震局兰州地震研究所
• 出 处: 西北地震学报
• 发表日期: 1979年02期
• 关键词: 大震 位移 长周期波 前兆 物理基础 震源 断层 应力降 临震 地震波

对于地震予报来说,前震和予滑是大多数前兆的物理基础。由于许多大震前其前震并不很发育,所以不易被觉察。正是这类地震常造成巨大伤亡。为了予报此类大震,予位移(称予滑或震前蠕滑)的研究就很重要了。本文拟对予位移的研究作一些回顾,并进一步讨论予滑所引起的应力场以及发射长周期波的问题。

For earthquakes, foreshocks and slippery are the physical basis for most precursors. Since many foreshocks did not develop well before the earthquake, they were not easily detected. It is these earthquakes that often cause tremendous casualties. In order to report such large earthquakes, the study of displacement (known as pre-slip or pre-quake creep) is important. This paper intends to make a review of the study of pre-displacement and to further discuss the issue of the stress field caused by slip and the issue of long-period waves.