利用连续小波变换，交叉小波变换研究ENSO对长江流域径流的影响。-Using the continuous wavelet transform, ENSO cross wavelet transform research on the influence of the Yangtze river basin runoff.

The continuous wavelet transform can be used to produce spectrograms which show the frequency content of sounds ~or other signals! as a function of time in a manner analogous to sheet music. While this technique is commonly used in the engineerin