作者: Zuo Xue , J Paul Liu , Qian Ge , None
DOI: 10.1002/ESP.2036
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摘要: As the population and economy boom, more dams are being built in Mekong River basin. Previous studies have revealed that Manwan Dam had little influence on runoff–SSC (suspended sediment concentration) relationship, load was relatively stable over past 40 years. However, is known at present relationship among monsoons, El Nino Southern Oscillation (ENSO), precipitation, runoff, impact of delta dynamics. A comprehensive hydropower GIS database covering entire basin presented this study. Mann–Kendall trend analysis showed no significant change precipitation runoff 50 Spectral runoffs middle to lower reach correlated with Indian Monsoon, where as East Asian Monsoon's mainly reach. With another 200 new be added next couple decades, changes expected both hydrological regime On one hand, a closer connection regional ENSO post-dam period (1993–2005) than pre-dam (1950–1993). Such even when completed. other daily maximum minimum water levels plain shown an abrupt drop since end 1994. This reduced water-level gradient between river sea inevitably weakens discharge coast, which might intensify ongoing coastal erosion eastern part plain. Copyright © 2010 John Wiley & Sons, Ltd.