The geo-pattern of course shifts of the Lower Yellow River

Auteur(s) et Affiliation(s)

WANG, Y.

State Key Lab. of Resources and Environmental Information Systems, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

SU, Y.

State Key Lab. of Resources and Environmental Information Systems, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

Graduate Univ. of Chinese Academy of Sciences, Beijing, Chine

Description :
This paper integrates all the records in historical documents related to course shift, flood and overflow of the Lower Yellow River (LYR) in the last 3000 years and stores them in a GIS database. Then, all the data will be visualized in the form of map. This study therefore summarizes characteristics of the LYR’s courses and influence scope, and classifies them both into 3 types; divides the flow directions of the LYR’s courses into 2 periods, and proposes its changing pattern; concludes the characteristic of diversion points of courses shift events; calculates the velocity of courses shifts, gradient and sinuosity, and analyzes their changing patterns. Finally, this study classifies factors that may influence the occurrence of a course shift into 2 types: the internal factors, such as sediment rate, gradient and sinuosity of the river, and the external factors, such as precipitation and human activities.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2011, vol. 21, n°. 6, p. 1019-1036, nombre de pages : 18, Références bibliographiques : 29 ref.

Date :
2011

Editeur :
Pays édition : Chine

Langue :
Anglais