发现了大震前地震活动性的迁移。
Migration of the seismic activity is found before a big event.
结合地震活动性分析结果的实际意义。
地震目录是研究地震活动性的基本资料。
Earthquake catalogs provide basic data set for the study of seismicity.
结果表明，震前的地震活动性表现出一定的异常。
The results show that there are some anomalies in seismicities before the earthquake.
本文采用时间扫描方法，画出五种地震活动性参数曲线。
In this paper, five kinds of curves of seismic activity parameter ware drawn by temporal scan method.
地震活动性分区综合评定是一项十分复杂的系统工程问题。
Comprehensive evaluation of the seismicity zoning is a very complicated systematic engineering problem.
该结果可为华北地区地震活动性预测研究提供应力场背景信息。
The result mentioned above may province the background information regarding present tectonic stress field of North China region for earthquake predication research.
在地震危险性分析中，历史地震资料是确定地震活动性参数的关键。
The historical seismic data are the key determining seismicity parameter in seismic hazard analysis.
利用地震簇，可以把强震的地震活动性图象识别得更清楚，简单和定量化。
By use of seismic clusters the seismicity patterns of strong earthquakes can be recognized and studied more clearly, simply and quantitatively.
本文讨论了障碍体的破坏与地震活动性的关系，以及与地震序列类型的关系。
The relations between the fracture of barriers and seismic activity, and the type of earthquake sequences are also discussed.
本文讨论了障碍体的破坏与地震活动性的关系，以及与地震序列类型的关系。
The relations between the fracture of barriers and seismic activity, and the type of earthquake...
根据活动构造参数估计地质地震活动性，能克服历史地震记载时间短的局限性。
Geological seismicity estimated from parameters of active tectonics will overcome the limitation of short historical records of earthquake occurrences.
震前地震活动性异常图象与强震孕育过程有关，反映了区域应力场应力变化过程。
The abnormal patterns of the moderate earthquakes were related to the developments of the large events, reflecting the processes of the stress variations in the regional stress fields.
对统计学方法在地震活动性研究中的部分重要成果、最新研究进展进行了简要地回顾。
In this paper, we concisely retrospect some recent progress and important research results on the application of statistics in seismicity.
应用地震活动性研究的基本方法对黑龙江河谷及邻近地区的地震活动特征进行了研究。
The feature of earthquake activity is studied by using the basic methods based on earthquake activity study in Heilongjiang river valley and its neighboring regions.
本报告主要包括以下内容： （1）渤海及其邻近地区的地震活动性与地震危险性估计；
This report mainly includes the following contents:(1) The seismicity and seismic risk assessment of the Bohai Sea area and its vicinity.
然而，遗憾的是，对于长期地震活动性预测所提议的方法的准确性和可靠性方面存在着严重的问题。
Unfortunately, however, there is serious question about the accuracy and reliability of proposed methods for long-term seismicity forecasts.
这些模型对于地区性地震活动性的差别，对于量化一个特定区域的地震活动风险的努力产生重要的后果。
The differences between these models for regional seismicity have important consequences for efforts to quantify the seismic hazard in a particular region.
文中研究了该地区的历史与现代地震活动性、长期地震危险性以及发生在华北与日本的大地震之间的关系。
The historical and present seismicity, the long-term seismic risk, and the relation between large earthquakes which occurred in North China and Japan have been studied.
根据历史地震记载、近期地震活动性和构造应力场资料，分析了北京西北延庆-怀来盆地的潜在地震危险性。
The potential seismic risk in the Yangqing-Hualai basin, NW of Beijing City, is estimated using historical documents and recent seismicity and tectonic stress field data.
本文应用人工神经网络原理，以地震构造和地震活动性为主要特征，对我国海南岛进行了潜在震源区的定量划分。
Applying the artificial neural network theory, setting the factors of tectonics and seismicity as the main characters, the Hainan island potential earthquake sources are quantitatively identified.
通过对漳州断陷盆地地震地质、地震活动性和震源机制解特征分析 ，研究了漳州断陷盆地强震发生的构造条件。
Now four sites are preliminarily selected for which author discusses in this paper the features of seismic geology and the conditions of engineering geology.
本文在研究秦皇岛市区域地震地质环境和地震活动规律的基础上，确定了区域潜在震源区及相应的地震活动性参数。
Based on the study of regional seismic environment and seismic periodicity, the potential seismic source zones and their activity parameters are determined.
阐明了地震活动性模型的理论基础、技术思路和方法，并以湖南地区和华北地区作为样本区域进行地震活动性分析。
Finally, we illuminate clearly theoretical foundation and technique of seismicity model, and select hunan region and north-china region as the demonstration region of seismicity.
文章从一个简单的地震活动层次模型出发，推导地震活动性中几个经验公式以及地震活动的时、空和震源大小分维性质。
Some empirical formulas of seismicity and fractal nature of time, space and source dimension are derived based on a simple hierarchy model of seismicity in this paper.
对盐津5.1级地震的地震活动性、前兆异常特征进行了分析研究，主要为地震预测预报积累经验，提供地震预报依据。
A study of the activity and the early abnormal signs of the earthquake of Ms 5.1 in Yanjin can provide experience and a basis for earthquake forecast.
对盐津5.1级地震的地震活动性、前兆异常特征进行了分析研究，主要为地震预测预报积累经验，提供地震预报依据。
A study of the activity and the early abnormal signs of the earthquake of Ms 5.1 in Yanjin can provide experience and a basis for earthquake forecast.
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