The idea and project of the “Medium－Scale Experiment Field for Earthquake Prediction”──Research on observations and applications of mining earthquake in Mentougou Coal Mine

Ｔｈｅｉｄｅａａｎｄｐｒｏｊｅｃｔｏｆｔｈｅ“Ｍｅｄｉｕｍ┐ＳｃａｌｅＥｘｐｅｒｉｍｅｎｔＦｉｅｌｄｆｏｒＥａｒｔｈｑｕａｋｅＰｒｅｄｉｃｔｉｏｎ”Ｒｅｓｅａｒｃｈｏｎｏｂｓｅｒｖａｔｉｏｎｓａｎｄａｐｐｌｉｃａｔｉｏｎｓｏｆｍｉｎｉｎｇｅａｒｔｈｑ...     

Discrimination Between Nuclear Explosions and Earthquakes: An Application of Wigner Distribution

In this paper,the nonstationary theory of Wigner Distribution is used to discriminate between underground nuclear explosions and natural earthquakes.Five underground explosions in Kazakhstan region and seven regional earthquakes in its adjacent areas have been analyzed.The result shows that the transient spectra of underground nuclear explosions are concentrated in the frequency range of 5-10 Hz,while the transient spectra of natural earthquakes are distributed widely from lower frequency to higher frequency.The transient frequency of nuclear explosions shows linearity in the first stage(0相似文献   

1906年新疆玛纳斯大震区的多层次逆冲构造与深部结构

通过对天山北麓 190 6年玛纳斯 7 7级地震区的浅层地震探测资料、石油地震反射剖面、二维电性结构剖面、深地震反射剖面的研究 ,发现玛纳斯地震区多层次活动构造系统的根带 ,它通过脆 -韧转换带与天山活动构造块体内上地壳中的低速、高导层连为一体。低速、高导层可能是天山地壳内正在活动的韧性剪切带 ,而齐古逆断裂 -褶皱带下的脆 -韧转换带是连接深部活动韧性剪切带与地壳浅部脆性破裂的枢纽 ,也是现今孕育和发生大地震的重要构造部位。 190 6年玛纳斯地震发生在脆韧转换带的底部 ,地震区的活动逆断裂和褶皱只是部分记录了深部韧性剪切带活动的信息     

唐山地震深浅构造关系研究

地表观察和浅层高分辨率地震探测表明 ,唐山断裂与地震地表主破裂带的位置、产状均一致 ,且具有高角度西倾的逆冲走滑性质 ,发生过右旋水平错动和向东逆冲的垂直活动 ,而次破裂带与褶皱构造活动引起的其他断裂直接相关。根据瞬变磁场和深地震探测结果分析 ,唐山地区存在莫霍面斜坡和地壳“背斜”、中地壳水平滑脱和扩展断裂、上地壳高角度逆冲走滑断裂和背向斜构造 ,它们组成 1幅多层次、多级序的复式逆断裂 -扩展背斜构造图像 ,控制了唐山地震的孕育和发生     

数字化地震仪的响应及其使用

本文介绍数字化地震仪的分级结构、基础知识以及在频域和时域从数字化记录中除去模拟级仪器响应的方法     

Earthquake loss estimation by using Gross Domestic Product and population data

ＥａｒｔｈｑｕａｋｅｌｏｓｅｓｔｉｍａｔｉｏｎｂｙｕｓｉｎｇＧｒｏｓＤｏｍｅｓｔｉｃＰｒｏｄｕｃｔａｎｄｐｏｐｕｌａｔｉｏｎｄａｔａＱＩ－ＦＵＣＨＥＮ１）（陈棋福）ＹＯＮＧＣＨＥＮ１）（陈禺页）ＬＩＮＧＣＨＥＮ２）（陈凌）１）ＣｅｎｔｅｒｆｏｒＡｎ...     

Features of isostatic gravity anomaly and seismic activity in the Central Asian region

Ｆｅａｔｕｒｅｓｏｆｉｓｏｓｔａｔｉｃｇｒａｖｉｔｙａｎｏｍａｌｙａｎｄｓｅｉｓ┐ｍｉｃａｃｔｉｖｉｔｙｉｎｔｈｅＣｅｎｔｒａｌＡｓｉａｎｒｅｇｉｏｎＳＨＥＮＧ－ＭＩＮＧＦＡＮＧ１）（方盛明）ＲＵＩＦＥＮＧ２）（冯锐）ＣＨＡＮＧ－ＺＨＥＮＧＴＩＡＮ...     

连云港─银川岩石圈壳─幔组合结构剖面构造应力场的有限元数值模拟

从岩石圈壳－幔组合结构出发，选择了大华北岩石围块体内一条NWW向连云港－银川的岩石圈壳－幔组合结构剖面，试图先从一个简单的力学模型开始，用二维有限元法得到岩石围（地壳和上地幔顶盖层）中的构造应力场的分布特征，从而解释板内地震与　岩石围亮－幔结构比值（R）相关的力学原因。     

Seismicity in Major Seismotectonic Provinces of Iran

Seismicity parameters,i.e.,seismic activity rate,X,the so-called Gutenberg-Richter b value(orβ),and maximum possible magnitude,Mmax,for major seismotectonic provinces of Iran are estimated through the application of Kijko and SellevolPs uncertainty models.The uncertainty models facilitated the estimation of seismic activity parameters from incomplete and uncertain data files in the catalog of earthquakes in major seismotectonic provinces of Iran.Zagros has the highest seismic activity rate,and is characterized by the occurrence of mainly small-and mid-sized earthquakes.Kopeh Dagh has the lowest activity rate but is characterized by a greater occurrence of major earthquakes.However,the Makran and Alborz-Azarbayejan seismotectonic provinces are most likely the regions which are capable of generating great earthquakes.     

Application of the value of nonlinear parameters H and ΔH in strong earthquake prediction

Ａｐｐｌｉｃａｔｉｏｎｏｆｔｈｅｖａｌｕｅｏｆｎｏｎｌｉｎｅａｒｐａｒａｍｅ┐ｔｅｒｓＨａｎｄΔＨｉｎｓｔｒｏｎｇｅａｒｔｈｑｕａｋｅｐｒｅｄｉｃ┐ｔｉｏｎＰＥＩ－ＹＡＮＣＨＥＮ（陈佩燕）ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｐｈｙｓｉｃｓ，ＳｔａｔｅＳｅｉ...