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(Article of periodic en Anglais - 2011)

Document title

Changes in hydrology and sediment delivery of the Mekong River in the last 50 years : connection to damming, monsoon, and ENSO

Authors(s) and Affiliation(s)

XUE Z. (1) ; LIU J.P. (1) ; GE Q. (2) ;
(1) Dep. of Marine, Earth, and Atmospheric Sciences, North Carolina State Univ., Raleigh, ETATS-UNIS
(2) Fac. of Earth Sciences, China Univ. of Geosciences, Wuhan, CHINE

Abstract

An hydropower GIS database covering the entire Mekong basin is presented in this study. Mann–Kendall trend analysis showed no significant change in precipitation and runoff over the past 50 years. With another 200 new dams to be added to the basin in the next couple of decades, changes are expected in both hydrological regime and delta dynamics. On one hand, the runoff showed a closer connection with the regional precipitation and ENSO in the post-dam period (1993–2005) than in the pre-dam period (1950–1993). Such a relationship is expected to be even closer when more dams are completed. On the other hand, both daily maximum and minimum water levels on the delta plain have shown an abrupt drop since the end of 1994. This reduced water-level gradient between the river and sea inevitably weakens the sediment discharge to the coast, which might intensify the ongoing coastal erosion on the eastern part of the delta plain

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2011, vol. 36, no3 [pp. 296-308]

Bibliographic references : 58 ref.

Collation : 11 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2036

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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