Abstract
Taking the 34 years (1970~2003) monthly runoff series and annual runoff series obtained from Lijin station and Huayuankou station as the basic data, the wavelet analysis (WA) method and the self-organized map (SOM) were used to establish a WA-SOM coupling model respectively to comparative analysis variation characteristics of the lower Yellow River’s runoff from the space. It could be seen from the results that: The monthly runoff and the annual runoff decreased significantly of the lower Yellow River, however, coefficient of variation of monthly runoff series and annual runoff series increased remarkably, The main periods of monthly runoff of the lower Yellow River became more complex in the whole, The runoff volume of the lower Yellow River was more concentrated in July, August, September and October, The runoff characteristics of January and February of the lower Yellow River had no much change, but the runoff series of August, September and October became conspicuous different.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
