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11.
本文在已有数据处理方法的基础上,利用近代数值逼近理论,给出了从时空域角度描述地壳垂直运动过程的一种具体的函数解析形式。最后给出了一个实际算例。 相似文献
12.
大同地震与华北北部地壳异态垂直运动 总被引:24,自引:3,他引:24
本文根据笔者提取异态信息的新数据处理方法,分析了华北北部地区近十年来地壳异态垂直运动,结果显示出以大同地震为界,震前的整个华北北部地区均处于应变的积累阶段,而且震源区具有非常清晰的四象限分布图像,呈一种典型的水平应力作用下的点源理论垂直形变场图象,震后整个华北北部地区则出现了截然相反的异态垂直运动,这又清楚地表明了具有弹性回跳的理论特征。迄今为止,这是我们唯一获得中强地震前后地壳异态垂直运动在空间 相似文献
13.
Radioisotope S^35 carried by Na2SO4 solution is a. good tracer for studying watersalt movement in soil layer. Examination of radioisotope S^35 as a tracer for the water-salt movement has been performed in laboratory by making use of simulated soil columns as well as in an experimental highway subgrade. The results indicate: (1)the maximum penetrating depth of atmospheric precepitatious in some arid regions in Northwestern China is about 20--30 centimeters; (2) an excess of water for construction usage for example, in the range of 30-40 kg/m^2 may probably lead to a upward migration of the salts from lower soil layers into the foundation and consequently cause damage to buildings. 相似文献