震中烈度

震中烈度与震级关系的模糊识别

Fuzzy recognition of the relations between epicentral intensity and magnitude

东南沿海地区震级与震中烈度的统计关系

Statistical relationship between magnitude and epicentral intensity of southeast littoral

本文运用模糊推论原理和模糊测度中的可能性概念，提出了一个从预报的震级推算震中烈度的新方法。

A new method for evaluating epicentral intensity from magnitude predicted is presented by the fuzzy reasoning and the possibility concept of fuzzy measures .

本文提出了离散回归概念，建立了用累次分配信息扩散模型进行震害经验离散回归的方法，介绍了其在震中烈度识别中的应用。

The concept of discrete regression , the method called repeated information distribution and its application in the epicentral intensity recognition are presented in this paper .

1977年5月12日宁河6.6级地震的震中烈度较之震级相当的其他地震的震中烈度明显地偏低。

The epicentral intensity of the aftershock of the great Tangshan Earthquake of July 28 , 1976 of magnitude 6.6 occurred on May 12 , 1977 is decisively lower than it should be .

破裂速度大，而且方向向上，可使震中烈度增高一度多，极震区面积扩大1&2倍；

When the rupture has a greater velocity and upward in direction , the epicentral intensity of an earthquake may be raised by one degree or more and the most destructive area increased by 1-2 times .

在地震影响场灰色系统分析的基础上，本文还应用模糊数学方法，完成了震级、震源深度、等震线所围面积对震中烈度的模糊识别，实现了地震影响场的模糊划分。

Based on grey system analysis of an earthquake influence field , the fuzzy distinguishing between the magnitude or the depth of earthquake source or the isoseismal area and the epicentral intensity has been finished in terms of fuzzy mathematics method also .

通过对评价指标的权重计算，确认人口密度、建筑物倒塌与严重破坏率、震中烈度是影响地震灾害人员伤亡的主要因素，地震预报、抗震设防水准、地震发生时刻和震级次之。

Considering the weights of the indices in the model , it is revealed that the population density , the destructiveness of buildings and the epicentral intensity of earthquake are the main factors that influence the casualties in earthquakes , while the rest of the indices are secondary factors .

利辛M4.1地震前的流磁异常及其变化安徽省利辛县4.1级地震震中区烈度考察

Anomalies in mobile geomagnetic survey and their variations prior to the Lixin , Anhui M 4.1 earthquake Investigation for intensity of epicentre area of M4.1 earthquake in Lixin County of Anhui Province

安徽省利辛县4.1级地震震中区烈度考察

Investigation for intensity of epicentre area of M4.1 earthquake in Lixin County of Anhui Province

下表给出了不同震级在震中附近的典型烈度。

The following table gives intensities that are typically observed at locations near the epicenter of earthquakes of different magnitudes .

由于其震中位置一般邻近重要的水利工程设施，且震源浅、震中烈度高，往往具有很大的破坏性，可造成大坝及附近建筑物的破坏和人员伤亡。

Because these shocks generally occur near important water conservancy establishments and commonly with low focal depth and high seismic intensity , sometimes they can cause very big destructiveness , and may cause personnel casualties and damage of the dams and buildings nearby .