关于临汾台短水准异常物理性质的几点认识

Some Views on the Physical Properties of the Short Term Leveling Anomalies in Linfen Station

临汾台短水准BM4-BM1测段2014年8月以来出现异常变化,为探究其变化的原因进行相关分析。对比降雨、地下水、气温等因素对数据造成的干扰发现,此类因素只会引起短期干扰,不存在长趋势的影响;运用拟合方法处理后,发现资料存在近十年的变化周期,与日长季节性十年变化周期有较好的相关性;结合台站其他倾斜仪同测项的同步异常变化及临汾-夏县GPS基线同时段变化特征,发现该异常变化包含构造活动信息。

The Short-level BM 4-BM 1 section of Linfen Station has experienced abnormal changes since August 2014.Relevant analysis is carried out to explore the reasons for its changes.Compared with rainfall,groundwater,temperature and other factors,it is found that such actors will only cause the short-term interference,but no long-term trend.After using fitting method,it is found that the data has a cycle change of nearly ten years.The long-season cycle change of ten years has a good correlation.Combined with the synchronous anomaly changes of other tilting instruments and the simultaneous changes of the Linfen-Xiaxian GPS baseline,it is found that the abnormal changes contain the information of tectonic activity.