震级

Seismic division into districts pursues medium introduced diagnostic earthquake model and interceptive G-R model, the magnitude that in order to states fault - frequency distributinging relation.

在1996年地震区划图中引入了特征地震模型和截断的G-R模型，用以表述断层的震级-频度分布关系。

Accurate short-term predictions of quakes are indeed "very difficult," said Lucile Jones, a seismologist at the US Geological Survey, in a recent interview with Xinhua.

美国地质勘探局地震学家露西尔·琼斯接受新华社记者专访时说，地震短期临震预报非常困难，精确预测地震的震级和时间仍是世界性难题。

Both seismological theory and macroseismic observation show that the shape of strong motion response spectrum depends mainly on magnitude,distance of epicenter and engineering site condition.since it is considered just the effect of engineering site condition and epicenter distance of only site condition to determine the characteristic period of acceleration response spectrum in the antiseismic design criterion of our country at present,the characteristic period of response spectrum determined from those critetion is different from that got from special seismic hazard analysis.

地震学理论和强震观测都表明，强震反应谱的形状主要取决于震级、震中距和场地条件。由于我国现行的各种行业建筑物抗震设计规范中对标准加速度反应谱特征周期Tg作出的规定中一般只考虑场地和震中距的影响或只考虑场地影响，因此在某些情况下，由规范所得到的反应谱特征周期与由专门的地震危险性分析所得到的结果相差较大。

Although both of the Longling earthquake in 1976 and the Lancang-Gengma earthquake in 1988 have similar parameters, such as time, location, magnitude, type, intensity of the meizoseismal area and socioeconomic states, the casualties are different as much as 10 times.

1976年云南龙陵、1988年云南澜沧－耿马地震发震时间、地点、震级相近，地震类型相近，极震区烈度相同，灾区社会经济状况基本相似，但人员伤亡相差10倍。

This test is the contrast and research on A and magnitude with simulant and digital materials of QiongZhong seismal Monitoring station and materials that State Bureau′s digital networks feedbacks.

就琼中基准地震台的模拟、数字资料，及国家地震局数字台网反馈的资料，进行震相、震级的对比研究。

Secondly, modeling the uncertainties of theb value, the annual occurrence ratev and the upper bound magnitude M uusing convex set models, a convex set-based seismic hazrd analysis approach is developed by integrating the convex theory with the probabilistic based CPSHA (China Probabilistic Seismic Hazard Analysis) theory. By the example of seismic hazard analysis of a city in southern China, this method is demonstrated with a sensitivity analysis.

然后，采用包络界限凸集模型和椭球界限凸集模型描述地震活动性参数b值、年平均发生率v和地震统计区震级上限M u的不确定性，将凸集理论和考虑时空不均匀性的概率地震危险性分析方法相结合，发展了地震危险性分析的凸集分析方法；以南方某市为例，进行地震危险性分析和地震活动性参数的敏感性分析。

Most happen in unpopulated areas, or are so mild that they go unnoticed by the general public.

大多数发生在无人居住的地区，或者震级很轻，公众并未注意到。

The breading of magnitude-frequency relation curve and its mechanism.

地震活动频度—震级关系曲线拐折及其力学机制研究。

Tsunamis can be generated when the sea floor abruptly deforms and vertically displaces the overlying water.

海啸是一种灾难性的海浪，通常由震源在海底下50千米以内、里氏震级6.5以上的海底地震引起。

The research on sand dikes is favorable for exploration of hydrocarbon reservoirs and for deducing ancient deposition setting and ancient earthquake grade.

对砂岩脉的研究有助于寻找有工业价值的油气藏以及推断古沉积背景和古地震的震级。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。