| 1. | From an earthquake source within an elastic medium, both types of body waves will propagate outward into the medium . 这两种体波将从弹性介质中的震源出发,向外传播到介质中去。 |
| 2. | Seventeen potential earthquake source areas were divided in the region according to the dividing principles and the signs of earthquake source areas 根据划分潜在震源区的原则和标志,在区域内共划分出17个潜在震源区。 |
| 3. | The earthquake source process seems to be extremely sensitive to small variations in the initial conditions ( as are fracture and failure processes in general ) 地震成因过程看来对原始状态中较小变化非常敏感破碎和失效过程总的来说亦如此。 ” |
| 4. | This project will promote the basic researches of seismology , especially the understanding of complexity of earthquake source process , as well as earthquake preparedness and disaster mitigation in beijing area 这项计划的执行对于地震学基础研究,特别是探索地震震源过程的复杂性和首都地区的防震减灾都有重要意义。 |
| 5. | To obtain the stress level at the earthquake source , this paper sets forth the solution of the stress magnitude at the earthquake source by seismic stress drop and the stress axis deflections before and after large earthquakes 摘要为求解震源处应力量值,运用大地震造成的应力方向偏转和地震应力降给出了求取震源处应力大小的方法。 |
| 6. | This paper discussed two problems in current seismic safety evaluation for engineering site , i . e . , the requirements of seismotectonic investigations and evaluation in near site area ( near region ) at the different seismic work levels ; and consistency between seismogenic structure and potential earthquake source with deterministic method and probabilistic method in engineering site seismic work at i - level 摘要本文讨论了目前工程场地地震安全性评价工作中大家关心的两个问题:不同级别地震工作的近场区(近区域)地震构造调查和评价的不同要求以及级工作中确定论和概率论分析方法中发震构造与潜在震源区的统一性。 |
| 7. | Analyzing on sequence characteristics , earthquake source , medium rupture characteristics , source conditions , historical seismicity , regional earthquakes and anomaly change of precursor data , etc . , we know well regional background of seismic activity before the m ( subscript s ) 6 . 1 the earthquake and judge earthquake situation trend after the m ( subscript s ) 6 . 1 the earthquake 摘要通过分析昭苏6 . 1级地震序列特征、震源与介质破裂特性、震源环境与历史地震活动类比及区域地震和前兆资料的异常变化等,对该震前的区域地震活动背景、震后的震情趋势等有了较为细致的了解和判定。 |
| 8. | Analysis of a great many data shows that some strong earthquake will arouse seismogenic zone loading and bring the increase of stress , accelerate accumulation of nonlinear strain of medium . it will make the earthquake source rupture of high stress status in unsteadiness in advance , which resulting the proceeding earthquake occur in advance 表明:某次强震活动可以引起某些孕震区的加载,介质非线性应变积累加速,使处于高应力状态的震源失稳提前进入不稳定状态,后续强震提前发生,即强震之间存在着时间、空间上的关联性。 |
| 9. | The previous researches on the seismogenic process emphasized particularly on single earthquake source model and theory , and studied the phenomena and mechanisms of long term medium term and short - term earthquake preparation process according to its temporal and spatial dynamic evolvement of stress field and strain field in earthquake source and its neighboring area 关于地震孕震过程,早期的研究大多侧重于震源模型和理论,围绕地震孕育发生过程中,震源及其邻近地区应力场、应变场的时空动态演化来研讨其长、中、短、临各阶段的现象与机理,而较少涉及各地震之间相互关系的研究。 |