Numerical Modelling of Ice Floods in the Ning-Meng Reach of the Yellow River Basin by Chunqing Wang

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  • Title: Numerical Modelling of Ice Floods in the Ning-Meng Reach of the Yellow River Basin
  • Author: Chunqing Wang
  • Category: The Environment
  • Date: January 2018
  • Lenguage: English
  • Pages: unknown
  • ISBN: 9781138487017

 

Ebook description:

The Ning-Meng attain of the Yellow River basin is positioned in the Inner Mongolia area at the Northern half of the Yellow River. Due to the particular geographical situations, the river circulation route is in direction of the North inflicting the Ning-Meng attain to freeze up yearly in wintertime. Both throughout the freeze-up and break-up interval, unfavourable situations happen which can trigger ice jamming and ice dam formation resulting in dike breaching and overtopping of the embankment. Throughout historical past this has typically led to appreciable casualties and property loss. Enhanced financial growth and human actions in the area have altered the traits of the ice regime in current a long time, resulting in a number of ice disasters throughout freezing or breaking-up intervals. The built-in water assets administration plan developed by the Yellow River Conservancy Commission (YRCC) outlines the necessities for water regulation in the higher Yellow River throughout ice flood intervals. YRCC is growing measures that not solely safeguard in opposition to ice floods, but additionally guarantee the availability of ample water assets. These present the general necessities for growing an ice regime forecasting system together with lead-time prediction and required accuracy. In order to develop such a system, numerical modelling of ice floods is a vital part of present analysis at the YRCC, along with area observations and laboratory experiments. In order to correctly mannequin river ice processes it’s mandatory to regulate the hydrodynamic equations to account for thermodynamic results. In this analysis, hydrological and meteorological information from 1950 to 2010 had been used to analyse the traits of ice regimes in the previous. Also, further area observations had been carried out for ice flood mannequin calibration and validation. By combining meteorological forecasting fashions with statistical fashions, a medium to brief vary air temperature forecasting mannequin for the Ning-Meng attain was established. These outcomes had been used to enhance ice formation modelling and delay lead-time prediction. The numerical ice flood mannequin developed in this thesis for the Ning-Meng attain permits higher forecasting of the ice regime and improved choice help for upstream reservoir regulation and taking applicable measures for catastrophe danger discount

 

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