Application of Wavelet Multi-scaling Decomposition in Identifying Water Level Anomaly of Deep Well
Jiawei Wang · Journal of Seismological Research · 2012
Basing on the wavelet multi-scaling decomposition,we make use of wavelet spectrum to identify the main scale of the studied time sequence,and then eliminate the main frequency information of the main scale by sine function fitting to identify water level anomaly covered by main frequency information.We analyze daily mean value sequences of water level of Anxiang well in Hunan and Qianniu well in Hebei by wavelet multi-scaling decomposition.The results show that the method is useful to identify water level abnormal information covered by dominant frequency information.