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不可思议的现象近几十年 ,地震学和固体地球物理学取得了长足的发展 ,解开了众多不解之谜。虽说如此 ,不解之谜仍然不少。对于过于复杂的现象解释不清楚倒情有可原 ,但对于一些极其简单、基本的现象也搞不清楚未免太说不过去了。比如说 ,太平洋板块每年以约 1 0 cm的速度由福岛县近海向茨城县近海、房总近海俯冲 ,可伊豆马里亚纳板块边界就是不发生大地震 ,你说怪不怪 ?这就是极简单、基本的不解之谜的例子。对这种现象长期以来有一种常识性的解释 :因板块边界面的摩擦几乎为零 ,故太平洋板块不受任何阻力 ,顺顺当当地向下俯冲。可是 ,单从… 相似文献
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系统收集了缅甸7.2级地震前后地震学基础资料,对缅甸地震地震地质、震源机制、烈度分布、发震构造、区域应力场、震源参数、地震灾害及地震序列时空分布进行详细分析,尤其对人们较为关切的缅甸地震后云南的强震形势进行了详细分析讨论,得到的认识对今后地震预测预报工作具有较大现实意义. 相似文献
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Summary Original copper engraving depicting an earthquake is reproduced and discussed. 相似文献
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1 邢台地震促进了中国地震预报的研究工作 1966年3月邢台地震和此后发生的一系列地震事件, 促进了我国地震学、地震地质学和地球内部物理学等相关学科的迅速发展, 也提出了诸多研究课题, 本文只能摘述一二. 相似文献
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Earthquake engineering in China 总被引：2，自引：0，他引：2
胡聿贤 《地震工程与工程振动(英文版)》2002,1(1):1-9
The development of earthquake engineering in China is described into three stages. The initial stage in 1950’s – 1960’s was
marked with the initiation of this branch of science from its creation in the first national 12-year plan of science and technology
by specifying earthquake engineering as a branch item and IEM was one participant. The first earthquake zonation map and the
first seismic design code were soon completed and used in engineering design. Site effect on structural design and site selection
were seriously studied. The second stage marked with the occurrence of quite a few strong earthquakes in China, from which
many lessons were learned and corresponding considerations were specified in our design codes and followed in construction
practice. The third stage is a stage of disaster management, which is marked by a series of government documentations, leading
by a national law of the People’s Republic of China on the protecting against and mitigating earthquake disasters adopted
at the meeting of the Standing Committee of the National People’s Congress of the People’s Republic of China in 1997, and
then followed by some provincial and municipal laws to force the actions outlined in the national law. It may be expected
that our society will be much more safer to resist the attack of future strong earthquakes with less losses. Lastly, possible
future developments are also discussed. 相似文献
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