top
Articles
  • Analysis of Temperature Variation during Initial Impoundment Phase in the Three Gorges Reservoir   [MASS 2012]
  • Author(s)
  • Lingquan DAI, Huichao DAI, Bingwei WANG
  • ABSTRACT
  • Water temperature plays a crucial role in water ecological environment both in the reservoir and downstream area. Three Gorges Project (TGP) is the largest hydraulic engineering in the world, and changes of water quality attract much more attention, especially in the thermal structure since initial impoundment in 2003. In order to clearly understand water temperature distribution after the initial impoundment in the Three Gorges Reservoir (TGR), we monitored the temperature distribution of the Taipingxi section which was not far from the dam from early April to the end of July in 2004. According to the analyzing of the monitoring data of transverse and vertical temperature variation, we could find that when water level went up to 135m above sea level (a.s.l.) or 139m in the initial impoundment phase, the temperature mixed uniformly in transverse direction. Excepting April, there was basically had no temperature difference in vertical direction, even in April, the maximum temperature difference was only 1.39within 100 meters (April 22), the average temperature gradient was only 0.014/m; Both the temperature of water and atmosphere have similar variation tendency, but the response of the water temperature to atmosphere is delayed, especially the bottom water temperature. The result indicate that the reservoir displayed a mixed thermal structure during initial impoundment phase, therefore, the release had no change before and after impoundment, also had little influence on the aquatic organism and crops at downstream , the work provide a scientific basis for the development of pollution control and ecological protection measure.
  • KEYWORDS
  • thermal structure; initial impoundment; the Three Gorges Reservoir (TGR); monitoring
  • References
  • [1]
    E. H. Alcantara, J. L. Stech, J. A. Lorenzzetti, M. P. Bonnet, X. Casamitjana, A. T. Assireu, E. Novo. Remote sensing of water surface temperature and heat flux over a tropical hydroelectric reservoir[J]. Remote Sensing of Environment, 2010, 114(11): 2651-2665
    [2]
    S. Elçi. Effects of thermal stratification and mixing on reservoir water quality[J]. Limnology, 2008, 9(2): 135-142
    [3]
    P. F. Hamblin, S. O. McAdam. Impoundment effects on the thermal regimes of Kootenay Lake, the Arrow Lakes Reservoir and Upper Columbia River[J]. Hydrobiologia, 2003, 504(1-3): 3-19
    [4]
    B. Sherman. Scoping options for mitigating cold water discharges from dams[M]. Canberra: CSIRO Land and Water, 2000
    [5]
    A. Kurunc, K. Yurekli, C. Okman. Effects of Kilickaya Dam on concentration and load values of water quality constituents in Kelkit Stream in Turkey[J]. Journal of Hydrology, 2006, 317(1-2): 17-30
    [6]
    A. Caliskan, S. Elci. Effects of selective withdrawal on hydrodynamics of a stratified reservoir[J]. Water Resources Management, 2009, 23(7): 1257-1273
    [7]
    E. Kowalski, J. Mazierski. Effects of cooling water discharges from a power plant on reservoir water quality[J]. Oceanological and Hydrobiological Studies, 2008, 37(2): 107-118
    [8]
    W. G. YU, Z. Q. XIA, G. R. YU, Y. P. CAI. Water temperature variation in Three-Gorges Reservoir and its influences on procreation of Chinese sturgeons (in Chinese)[J]. Journal of Hohai University(Natural Sciences), 2004, 35(1): 92-95
    [9]
    Y. M. Lu, G. J. Cao. The Three Gorges project on the Yangtze River (Technology Advancement )[M]. Beijing: China WaterPower Press, 2010
    [10]
    B. J. Fu, B. F. Wu, Y. H. Lu, Z. H. Xu, J. H. Cao, D. Niu, G. S. Yang, Y. M. Zhou. Three Gorges Project: Efforts and challenges for the environment[J]. Progress in Physical Geography, 2010, 34(6): 741-754
    [11]
    N. Liu, C. B. Jiang, Y. C. Chen. Water environmental properties at the near dam region of the Three Gorges Reservoir in the initial impoundment period[J]. Journal of Hydraulic Engineering, 2006, 37(12): 1447-1453
    [12]
    Z. X. Luo, Y. Zhang, B. H. Zheng, G. Fu, Z. H. Lu. Analysis of Aquatic Environmental Characters in Three Gorges Reservoir of China at Early Reserving Stage[J]. Resources and Environment in the Yangtze Basin, 2005, 14(6): 781-785
    [13]
    C. Lindima, E. J. Hayterb, J. L. S. Pinhoc, J. M. P. Vieirad. Modeling thermal structure variations in a stratified reservoir[A]. 2010 International Congress on Environmental Modelling and Software[C]. Ottawa, Canada, 2010

Engineering Information Institute is the member of/source content provider to

http://www.scirp.org http://www.hanspub.org/ http://www.crossref.org/index.html http://www.oalib.com/ http://www.ebscohost.com/ http://www.proquest.co.uk/en-UK/aboutus/default.shtml http://ip-science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&Full=journal%20of%20Bioequivalence%20%26%20Bioavailability http://publishers.indexcopernicus.com/index.php