水氡异常

大同－阳高地震前定襄台的水氡异常特征

Water Radon Anomaly Feature in Dingxiang Station before the Datong-Yanggao Earthquake

小金6.6级地震前的地倾斜和水氡异常

Ground title anomaly and grounder water radon anomaly before Xiaojin M6.6 Earthquake

华北水氡异常与地震关系的Bayes判别分析

Bayes discriminant analysis of the relationship between the radon anomalies and earthquakes in North China

1988年11月6日澜沧&耿马地震的水氡异常

Radon anomaly in the Nov. 6 , 1988 , Lancang-Gengma earthquake

青海省海南台水氡异常特征综合研究

General research on radon anomaly characteristics of Hainan station in Qinghai Province

非地震因素引起水氡异常一例

An example of groundwater radon anomaly by non-seismic factors

水氡异常的水动力学机制

The hydrodynamic mechanism of water radon anomaly

应用气体扩散和氡蜕变理论讨论水氡异常的形成

Applying theory of GASSEOUS diffusion and radom decay to discussing cause of water radom anomaly

南黄海6.2级地震前苏17井的水氡异常

Water radon anomaly of No. 17 well before the M 6.2 earthquake in South Yellow Sea

云南近期几次M≥6.0级地震前水氡异常特征

Change characters of radon content in groundwater before several earthquakes with M ≥ 6.0 in Yunnan Province

结果表明：水氡异常的幅度可能反映地震活跃期的强震活动水平；

The result indicates that radon abnormity range can reflect strong earthquake active level of earthquake active period ;

唐山大震前水氡异常的时空变化河北万全深井水位震前异常变化初探

SPATIAL-TEMPORAL VARIATIONS IN THE ANOMALY OF RADON BEFORE TANGSHAN EARTHQUAKE Abnormal Change Related to Earthquake in Water-level of the Deep Well of Wanquan , Hebei

认为水氡异常变化，与周围冷水井抽水有关，而不是地震前兆。

We conclude that instead of an earthquake precursor , the anomaly is relevant to the water pumping of cold water well in the vicinity .

研究结果认为，海南水氡异常对地震的预报效能评分为04，表明水氡异常与地震活动有关；

The calculated earthquake prediction effective value of radon anomalies at Hainan station is about 0.4.The result shows that radon anomalies have something to do with earthquakes .

采用改进从属函数法，其定襄水氡异常与华北多次强震有明显对应关系；

By using the method of improved hypotaxis function relation , the anomaly of radon in Dingxiang spring is evidently correlated to several strong earthquakes in North China .

应用水氡异常的滑动平均值和从属函数的判定方法做进一步分析，结果表明，磁山井水氡值的中期异常与华北地区的这两次中强地震有较好的对应关系；

The anomalies are analyzed with sliding mean and secondary function method . The results show that the medium term anomalies of radon are corresponding well with the two events .

系统分析了吉林省丰满地震观测井的水氡异常及其与远近地震的对应关系，发现在日本海等地的40次中强以上地震之前有很好的对应关系。

We have analyzed correspondent relation between the anomaly of water radon observed at Fenman well and earthquakes which occurred nearby or far away . We found that such correspondent relation s look good before 40 major earthquakes including the events in Japan Sea .

结果表明，在强震前水氡观测异常台站的空间分布非均匀性发生显著变化，Cv值有明显的升高过程。

To describe the inhomogeneity of tem - poral-spatial distribution of observational station , showing Radon anomaly , Cv value is employed .

水氡群体异常频次序列的周期分析

Periodicity analysis of the frequency sequence of water radon group anomaly

云南中强震的水氡前兆异常特征

Precursory Anomaly Characteristics of Radon in Groundwater before Moderate-strong Earthquakes in Yunnan Province

云南地区水氡前兆异常动态演化与地震关系研究

Dynamic evolution of precursory anomaly of water radon and its relations with earthquakes in Yunnan region

对白银地区水氡值异常与中强地震的活动关系进行了一些经验性的探索。

The relationship between the anomalies of radon in underground water and the seismicity is discussed in the paper .

讨论认为，水氡负异常做为中期前兆的信度较低；

It is considered that the confidence of water radon negative anomalies which are regarded as mid term precursors is low .

表明动态图像方法能较完整、直观地揭示水氡前兆异常的特征，可望成为一种水氡分析预报的新方法。

It is suggested that the dynamic pattern method could completely and directly show the anomaly characteristic in Radon precursor and be a new method of Radon analysis for the earthquake prediction .

大姚6.2级地震前云南地区水氡中短期异常及其地震预测意义

The Mid-Short Term Radon Anomaly Before M6.2 Dayao Earthquake and Its Significance in Earthquake Prediction

短期阶段出现区域水氡差分异常的月频次增加；

In short term stage , the monthly frequency of the differential anomalies of regional radon increased ;

中强地震前水氡短临异常的研究

Study on short term temporal anomaly of radon content in ground water before some moderate and strong earthquakes

地震前水氡短临异常判别指标及预报三要素的方法探讨

On the indices distinguishing Short-imminent anomalies of water-radon before a earthquake and the method predicting its time , location and magnitude

祁连山&河西走廊地区5级以上地震前水氡短临异常特征

Short-impending Period Anomalous Characteristics of Radon in Ground Water before Earthquakes with M ≥ 5 . 0 in the Area between Qilian Mountain and the Hexi Corridor

民和水氡正常动态与异常变化特征分析

Analysis on the normal and abnormal characteristics of radon in Minhe