Temporal and spatial variations and statistical models of extreme runoff in Huaihe River Basin during 1956–2010

Auteur(s) et Affiliation(s)

XIA, J.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

State Key Lab. of Water Resources and Hydropower Engineering Science, Univ., Wuhan, Chine

DU, H.

State Key Lab. of Water Resources and Hydropower Engineering Science, Univ., Wuhan, Chine

ZENG, S.

State Key Lab. of Water Resources and Hydropower Engineering Science, Univ., Wuhan, Chine

SHE, D.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

Graduate University of Chinese Academy of Sciences, Beijing, Chine

ZHANG, Y.

Graduate University of Chinese Academy of Sciences, Beijing, Chine

YAN, Z.

China Inst. of Water Resources and Research, Beijing, Chine

YE, Y.

College of Natural Resources and Environment, Southwest Univ., Chongqing, Chine

College of Water Resources and Hydropower Univ., Suchuan Univ., Chengdu, Chine

Description :
Based on the daily runoff data from 20 hydrological stations above the Bengbu Sluice in the Huaihe River Basin during 1956–2010, run test, trend test and Mann-Kendall test are used to analyze the variation trend of annual maximum runoff series. Temporal and spatial variations of extreme runoff in the Huaihe River Basin are analyzed. The results show that during the period 1956–2010 in the Huaihe River Basin, annual maximum runoff at 10 stations have a decreasing trend, while the other 10 stations have an unobvious increasing trend. The maximum runoff events almost occurred in the flood period during the 1960s and 1970s. The extreme runoff events in the Huaihe River Basin mainly occurred in the mainstream of the Huaihe River, Huainan mountainous areas, and Funiu mountainous areas. Percentile value method, mean excess plot method and certain numbers of peaks over threshold method are used to select threshold, and it is found that percentile value method is the best of all for extreme runoff in the Huaihe River Basin.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2012, vol. 22, n°. 6, p. 1045-1060, nombre de pages : 16, Références bibliographiques : 26 ref.

Date :
2012

Editeur :
Pays édition : Chine

Langue :
Anglais