摘要
静宁东峡泉水氡是1987年投入观测的,资料连续可靠,1990～1997年连续在全省地方台资料评比中被评为Ⅰ类观测资料.用计算机对该泉多年资料进行处理后,有一个完整的夏高冬低的正弓形年动态图像,而且与历年观测值的多次拟合函数有较好的显著性.采用非线性回归和国家地震局水化实用处理方法判别资料的异常范围,异常点超出年动态二倍剩余标准差,可视为地震异常.资料对该台周围300 km 范围内的地震都有较好的震前反映.
Radon in groundwater of the Dongxia spring was put into observation in 1987,and its data were continuous and reliable.Based on the judgement of data anomaly by using nonlinear regres- sion and hydrochemically practical processing method,the anomaly that exceeds the annual dy- namic value by two times residual standard deviation can be regarded as seismic anomaly.The radon data have shown obvious anomaly reflection before the earthquakes around the boservation station.
出处
《西北地震学报》
CSCD
1998年第4期91-93,共3页
Northwestern Seismological Journal
关键词
水氡
映震能力
年动态变化
地震前兆
Radon in groundwater
Reflecting earthquake ability
Annual dynamic change
