虽然在过去4年中地震预报有了长足的进步,但对于继续取得的进展,谨慎的乐观主义态度反映在部分地修改了的目标和一些新的定义上。第一,70年代寻找一种可靠的和可观测的地震前兆的失败的认识(e.g.,Evernden,1982)已经再次强调,我们必须了解地震孕育过程的物理基础(e.g.,Stuart,1984、1985)。 Although there has been considerable progress in earthquake prediction over the past four years, a cautiously optimistic attitude toward continued progress is reflected in the partially revised objectives and some new definitions. First, the search for a reliable and observable earthquake precursor failure in the 1970s (e.g., Evernden, 1982) has emphasized once again that we must understand the physical basis of the earthquake breeding process (e.g., Stuart, 1984, 1985).