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2019 | 28 | 3 |

Tytuł artykułu

Applying the dynamic critical precipitation method for flash flood early warning

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The flash flood early warning method based on dynamic critical precipitation is proposed, which takes into account the percentage saturation of soil moisture content in double-excess model. A series of historical precipitation data of various gauge stations in the upper catchment of the study area at the early warning cross-section are set as the input parameters, thereby the runoff generation and concentration in the catchment are obtained in the double-excess model, and the percent saturation of soil moisture content is calculated. Based on the warning discharge in combination with the percentage saturation of soil moisture content, the discriminant relations of the critical precipitation for the time intervals, including 0.5 h, 1 h, 1.5 h, 2 h, 2.5 h, and 3 h, are computed respectively using the inversion method. Using the precipitation data from ground rain gauge stations for year x and flood hydrograph data of x typical flood events for the Dayuhe River catchment, the SCE-UA algorithm is adopted to calibrate the parameters of the double-excess model, and the discriminant functions of dynamic critical precipitation for flash flood early warning with 6 time scales are validated using x representative historical flood hydrographs. The qualification ratio for flash flood early warning exceeds x, which demonstrates the feasibility and applicability of the proposed method.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

28

Numer

3

Opis fizyczny

p.1727-1733,fig.,ref.

Twórcy

autor
  • China Institute of Water Resources and Hydropower Research, Beijing, China
autor
  • School of Hydropower and Information Engineering, Huazhong University of Science and Technology, Wuhan, China
autor
  • School of Hydropower and Information Engineering, Huazhong University of Science and Technology, Wuhan, China
autor
  • School of Hydropower and Information Engineering, Huazhong University of Science and Technology, Wuhan, China
autor
  • China Institute of Water Resources and Hydropower Research, Beijing, China
autor
  • State Key Laboratory of Disaster Prevention and Reduction for Power Grid Transmission and Distribution Equipment, Changsha, China
  • State Grid Hunan Electric Company Disaster Prevention and Reduction Center, Changsha, China

Bibliografia

  • 1. YE J., LI Z. The study and application of flash flood early warning methods based on dynamic critical precipitation. Journal of Meteorological Research, 1, 101, 2014.
  • 2. Ren C.F. The analytical study and application of flash flood early warning indicators for small watersheds in Shandong province. Shandong University, 1, 1 2015.
  • 3. Wang X., Tang Y., Zhang M, Lei C., Gong L. A study of critical precipitation for areas lacking hydrological data based on water stage/discharge inversion method. Journal of Water Resources and Water Engineering, 4, 125, 2016.
  • 4. Liu Z., Hou A. Wang X. Flood forecasting techniques for medium and small rivers based on distributed hydrological model. Hydrology, 1, 1, 2015.
  • 5. Du K., Zhao Y., Xie J. A Study of Threshold Rainfall for Mountain Flood Forecast in Nana River, Taohe basin. China Flood & Drought Management, 1, 23, 2013.
  • 6. Zhang L., Wang W., Wen M.Z. Research on Refined Early-Warning Method of Mountain Flood Disaster Based on FloodArea. Journal of Fudan University, 1, 1, 2015.
  • 7. Shamir E., Georgakakos K.P., Spencer C. Evaluation of real-time flash flood forecasts for Haiti during the passage of Hurricane Tomas, November 4-6. Natural Hazards, 67 (2), 459, 2013.
  • 8. GE H. Parameters of Double Infiltration Model Calibratio Based on SCE – UA. Water Conservancy Science and Technology and Economy, 22 (7), 26, 2016.
  • 9. Qiu L., Xue F. The application of double-excess model in flood forecasting in a small watershed. Henan Hydraulics and South-North Water Transfer, 1, 1, 2017.
  • 10. SUN W., WANG P., HE F., ZHANG Y., LIANG G.Comparative Study of Flood Simulation Methods at Small Watershed, Journal of Water Resources Research, 5 (3), 6, 2016.
  • 11. Zhang J., Zhang W. and Xing B. The application of SCE - UA methods in the optimization of hydro-environmental system. Water Resources Protection, 3, 61, 2014.
  • 12. CHENG W. A review of rainfall thresholds for triggering flash floods. Advances in Water Science, 6 (24), 901, 2013.
  • 13. Li C., Wang H., Cheng X., Yuan B., Ma M., Liu C., Sun D. Critical Rainfall Analysis on Flash Flood Early Warning for South Branch of Censhui Watershed. Journal of Hydraulic Engineering, 1, 1, 2016.
  • 14. WANG Y., Wang Y. Discussion on unsaturated soil of Richards infiltration equation. Hydrogeology and Engineering Geology, 31 (1), 9, 2004.
  • 15. Li L., Yan Y., Shen B. The application of double-excess model in semi-humid areas. Journal of North University of China (Natural science), 1, 62, 2008.
  • 16. CAO Y., SUN X. Applicationand Improvement of Shuangchao Model in Zhangfeng Reservoir. Yellow River, 38 (11), 58, 2016.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

bwmeta1.element.agro-a49abdec-18f5-4267-b58d-1d6067ebd4bd
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