Modification Effect Analysis of Inconsistency Runoff Series

Abstract:

Affected by the climate change and human activities, the consistency of Measured Runoff Series (MRS) is changing. The methods of reduction modification and current modification are commonly used to the inconsistent MRS in domestic, the modified runoff series will be used to water resources assessment as the basic data, but the methods that used to estimate the consistency of Reduction Runoff Series (RRS) and Current Runoff Series (CRS) is subjective to some extent. With the MRS/RRS/CRS from 1956 to 2000 of Huayuankou Station at Yellow River, the influence degree of human activities and climate change to the inconsistency of runoff series were analyzed preliminarily, then the hydrological alteration diagnosis system was used to estimate the consistency of runoff series, with the parameters of Hurst coefficient and the alteration classification, the modification effect of RRS/CRS was analyzed. The results show that, although the consistency of RRS/CRS was improved, the alteration still existed, they should be modified further more to satisfied the requirement of water resources assessment, or the assessment method that adjust to the inconsistent runoff series should be adopted.

• Periodical: Advanced Materials Research (Volumes 1073-1076)
• Pages: 1609-1613
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1073-1076.1609
• Online since: December 2014
• Authors: Bin Xu*, Guang Cai Chen, Ping Xie
• Keywords: Huayuankou Station, Inconsistency, Runoff, Water Resource, Yellow River

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