在我们的日常生活中,大家总希望对某件事判断得十分肯定,或对某个问题回答得十分明确,然而在现代科学的许多领域中,对一些问题下结论却并不那么简单.就拿我们日夜居住的地球来说,有人就归纳过许多大问题,如在其几十亿年的发展演化过程中,地球是热了还是冷了,是大了还是小了,是重了还是轻了,是转得快了还是转得慢了,等等,都曾经有过长期的争论,其中不少问题至今依然有两种针锋相对的看法.这一方面固然是人们的科学水平和认识能力尚未达到足以给出明确结论的程度,而另一方面也需要看到,往往对于一些复杂的科学问题,本来就难以用一个简单的结果来加以定论.“十年一震”的说法是属于地震活动周期性的范畴.因此,这里简单介绍一点关于地震活动周期性问题的研究情况.地震活动周期性问题是地震界长期争论的一个问题.本世纪初以来,地震学家们通过各自的研究,对地震周期性问题展开了争论.世界上一些非常有名的地球物 In our daily life, we always hope that we can either make a very firm judgment on a particular issue or answer a very clear one. However, in many fields of modern science, conclusions on some issues are not so simple. Taking the earth we live in day and night, many people have summarized many big questions. For example, during the development and evolution of billions of years, the earth is hot or cold, big or small, heavy or light Have turned a long way or too slow, and so on, have had long-term controversy, and many of them still have two tit-for-tat arguments so far. On the one hand, this has not yet reached the scientific level and cognitive abilities of the people To a sufficient degree to give a definite conclusion, on the other hand, it needs to be seen that it is often difficult to conclude some complex scientific problems with simple results, and the statement of “10-year earthquake” belongs to the seismic activity Periodic area.Therefore, a brief introduction of the research on the periodicity of seismicity is given here.The periodicity of seismicity is a long-standing issue of the seismic community.Seismology Who through their research, a cyclical problem of earthquake launched a debate. Some of the world very famous geophysicist