哈萨克斯坦卡帕尔-阿拉善4号井氦气(He)含量映震特征
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摘要
介绍了哈萨克斯坦卡帕尔-阿拉善4号井的水文地球化学环境,分析其17年氦气(He)含量变化映震特征,氦气(He)变化的地震前兆异常表现为:上升(或下降)幅度、速率变化超出正常范围,具有较好的重复性,测值遵循的是,背景值—趋势性上升(或突升),趋势性下降(或突降)—恢复至背景值的变化过程。将该井氦气(He)观测数据经过滤波、差分处理后,以3倍均方差作为异常识别标准,结果表明:氦气(He)对监测点周围300 km范围5级地震、400 km范围6级地震的对映率分别为100%、66.7%,是较好的地震前兆手段之一。
We introduced the hydrology geochemistry environment of No.4 well in Capar-Allashan of Kazakhstan and analyzed the characteristic of corresponding earthquakes about change of helium(He) content in No.4 well about 17 years.The earthquake precursory abnormity of helium(He) content change shows that both the rise range(or drop) and the speed change surpass the normal range.And they have good reiteration.The measure value accords a change process that the background value appears tendency rise(or rises suddenly),then tendency drop(or drop suddenly),at last back to the background value.After filtering and difference processing the observation data of helium(He) in No.4 well,we took 3 time of mean-square deviations as the standard of abnormity distinguish.The result shows that,for MS5 around 300 km and MS6 around 400 km in observation point,the corresponding earthquakes of helium(He) is 100% and 66.7% respectively.It is one of good precursory methods.
We introduced the hydrology geochemistry environment of No.4 well in Capar-Allashan of Kazakhstan and analyzed the characteristic of corresponding earthquakes about change of helium(He) content in No.4 well about 17 years.The earthquake precursory abnormity of helium(He) content change shows that both the rise range(or drop) and the speed change surpass the normal range.And they have good reiteration.The measure value accords a change process that the background value appears tendency rise(or rises suddenly),then tendency drop(or drop suddenly),at last back to the background value.After filtering and difference processing the observation data of helium(He) in No.4 well,we took 3 time of mean-square deviations as the standard of abnormity distinguish.The result shows that,for MS5 around 300 km and MS6 around 400 km in observation point,the corresponding earthquakes of helium(He) is 100% and 66.7% respectively.It is one of good precursory methods.
引文
[1]范树垒,苏盛虎,李霓.京棉二厂井氦、氢气体的地震前兆异常特征及其与地震关系的研究[J].地震学报,1993,15(4):490-497.
[2]王道,张洪斌,许秋龙,等.新疆沙湾5.2级地震地下流体前兆异常特征的分析[J].地震,1997,17(3):297-303.
[3]高小其,王道,许秋龙,等.对哈萨克斯坦、吉尔吉斯斯坦两国地下流体资料的初步分析[J].内陆地震,1999,13(3):243-252.
[4]蔡仲琼.新疆乌鲁木齐地区5级以上地震水化震例剖析[C]//国家地震局科技监测司.地震预报方法实用化研究文集—水位水化专辑,北京:地震出版社,1990.
[5]刘英俊.元素地球化学[M].北京:地震出版社,1984.
[6]高小其,兰陵,许秋龙,等.乌鲁木齐10号泉He含量变化的映震特征[J].四川地震,2002,104(3):27-31.
[7]王道.新疆北天山地区地下流体地震前兆研究的现状与发展前景[J].内陆地震,1995,9(2):137-149.
[8]国家地震局预测预防司.地下流体地震预报方法[M].北京:地震出版社,1997.
[9]蒋靖祥,王在华,温和平,等.2003年昭苏MS6.0地震定点形变异常初步分析[J].地震,2005,25(2):83-89.
[2]王道,张洪斌,许秋龙,等.新疆沙湾5.2级地震地下流体前兆异常特征的分析[J].地震,1997,17(3):297-303.
[3]高小其,王道,许秋龙,等.对哈萨克斯坦、吉尔吉斯斯坦两国地下流体资料的初步分析[J].内陆地震,1999,13(3):243-252.
[4]蔡仲琼.新疆乌鲁木齐地区5级以上地震水化震例剖析[C]//国家地震局科技监测司.地震预报方法实用化研究文集—水位水化专辑,北京:地震出版社,1990.
[5]刘英俊.元素地球化学[M].北京:地震出版社,1984.
[6]高小其,兰陵,许秋龙,等.乌鲁木齐10号泉He含量变化的映震特征[J].四川地震,2002,104(3):27-31.
[7]王道.新疆北天山地区地下流体地震前兆研究的现状与发展前景[J].内陆地震,1995,9(2):137-149.
[8]国家地震局预测预防司.地下流体地震预报方法[M].北京:地震出版社,1997.
[9]蒋靖祥,王在华,温和平,等.2003年昭苏MS6.0地震定点形变异常初步分析[J].地震,2005,25(2):83-89.
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