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

作者: Zuo Xue , J Paul Liu , Qian Ge , None

DOI: 10.1002/ESP.2036

关键词:

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.

参考文章(50)
J.P. Liu, Z. Xue, K. Ross, H.J. Wang, Z.S. Yang, A.C. Li, S. Gao, Fate of sediments delivered to the sea by Asian large rivers: Long-distance transport and formation of remote alongshore clinothems The Sedimentary Record. ,vol. 7, pp. 4- 9 ,(2009) , 10.2110/SEDRED.2009.4.4
W. N. Venables, B. D. Ripley, Modern Applied Statistics with S Springer. ,(2010) , 10.1007/978-0-387-21706-2
Ian C. Campbell, Perceptions, data, and river management: Lessons from the Mekong River Water Resources Research. ,vol. 43, ,(2007) , 10.1029/2006WR005130
Bin Wang, Zhen Fan, Choice of South Asian Summer Monsoon Indices Bulletin of the American Meteorological Society. ,vol. 80, pp. 629- 638 ,(1999) , 10.1175/1520-0477(1999)080<0629:COSASM>2.0.CO;2
Houjie Wang, Zuosheng Yang, Yoshiki Saito, J. Paul Liu, Xiaoxia Sun, Interannual and seasonal variation of the Huanghe (Yellow River) water discharge over the past 50 years: Connections to impacts from ENSO events and dams grid and pervasive computing. ,vol. 50, pp. 212- 225 ,(2006) , 10.1016/J.GLOPLACHA.2006.01.005
Shichang Kang, Dahe Qin, Jiawen Ren, Yongjun Zhang, Susan Kaspari, Paul A. Mayewski, Shugui Hou, Annual Accumulation in the Mt. Nyainqentanglha Ice Core, Southern Tibetan Plateau, China: Relationships To Atmospheric Circulation over Asia Arctic, Antarctic, and Alpine Research. ,vol. 39, pp. 663- 670 ,(2007) , 10.1657/1523-0430(07503)[KANG]2.0.CO;2
James P. M. Syvitski, Albert J. Kettner, Irina Overeem, Eric W. H. Hutton, Mark T. Hannon, G. Robert Brakenridge, John Day, Charles Vörösmarty, Yoshiki Saito, Liviu Giosan, Robert J. Nicholls, Sinking deltas due to human activities Nature Geoscience. ,vol. 2, pp. 681- 686 ,(2009) , 10.1038/NGEO629