RECOGNITION OF ARTIFICIAL EXPLOSION AND EARTHQU-AKE USING THE RECORDS AT THE URUMQI DIGITAL TELEMETRY SEISMIC STATION
RECOGNITION OF ARTIFICIAL EXPLOSION AND EARTHQU-AKE USING THE RECORDS AT THE URUMQI DIGITAL TELEMETRY SEISMIC STATION
复制标题
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Xiao Ai-guo
中科院分区：
文献类型：
--
作者：
Xiao Ai-guo
利用波形频谱分析和波形空间线性分析方法，对乌鲁木齐数字遥测地震台的人工爆破和天然地震资料进行了对比研究。结果表明，人工爆破地震波的频谱特征值和波形空间线性度与天然地震波有较大差异。当震级和震中距相近时，地震压缩波的转折频率f-cP和横波转折频率f-cS均大于爆炸，约为2：1，地震谱最大值之比也大于爆炸，约为3：1;地震P波功率谱的频谱特征值（f-mW，Δ f-W）远大于爆炸。这些差异可作为识别人工爆破与天然地震的测震学指标。
A comparative research of the artificial explosion and nature earthquake data recorded by the Urumqi Digital Telemetry Seismic Station are made using methods of wave spectrum analysis and waveform space linearity. It is found that the wave spectrum characteristic value and waveform space linearity have much difference between the artificial explosion and nature earthquake. When they have close magnitudes and epicentral distances, the corner frequency f- cP of compression wave of the earthquake and the corner frequency f- cS of the transverse wave are larger than those of the explosion, the ratio about 2 to 1; the ratio of maximum spectrum value of the earthquake is also more than that of the explosion, about 3 to 1; and the frequency spectrum characteristic values of P-wave power spectrum of the earthquake ( f- mW, Δf-W ) are far more than those of the explosion. These differences can be taken as seismometric indexes for recognizing artificial explosion and nature earthquake.