Time variation of runoff
WebFeb 8, 2024 · River runoff trends change with climatic conditions. In recent years, research on runoff variability is focusing more on climate factors because runoff has been … WebAug 23, 2013 · The identified time of the variation in the annual runoff is verified by a marked difference in mean values in the periods before and after it, which amounted to …
Time variation of runoff
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WebThe objective of this study was to illustrate the temporal variation of runoff and sediment of loess tilled slopes under successive rainfall conditions. Loess tilled slopes with four microtopography types (straight cultivated slope, artificial backhoe, artificial digging, and … WebSep 20, 2024 · At present, there is no unified definition of runoff variation. Variation in runoff can be recognized when the change in runoff has a significant impact on the ecosystem (Macnaughton et al. 2024).From a broader perspective, variation can be observed when the patterns and characteristic parameters of runoff processes have significantly deviated …
WebJan 24, 2024 · The variation of runoff over time is often influenced by a combination of factors. Runoff is not only characterised by trends and periodicity, but also by abrupt changes and a multi-scale structure, which has a multi-level evolution . The wavelet transform can clearly reveal the multiple cycles of runoff hidden in the time series. WebHongze Lake plays a key role in flood and waterlogging prevention, analyzing the variation process and characteristics of multi-time scales will have a great practical significance to …
WebOct 17, 2013 · The coefficient of variations for the daily, 2-day, 7-day and 10-day runoff time series is 1.37, 1.36, 1.33 and 1.32, respectively. This result shows the variation in runoff decrease with temporal scales, and the lowest variability and the weakest complexity are found at the coarsest resolution (10-day) (Table 1).
WebJul 2, 2024 · Effect of runoff on time variation of chemical characteristics of water Studying the characteristics of runoff ions and their influencing factors have important implications …
WebReliable prediction of runoff from land surface into streams and rivers is difficult and time consuming to obtain for ungauged basins ... These techniques can be used to estimate the spatial variation of the hydrological ... With the first model run, the total direct runoff volume and the peak discharge for the 10 years return period were ... probabilities in mathWeb2024, rainfall flow and sanitary runoff calculation in micro-basin tarango in mexico city, mexico (atena editora) probabilities of dyingWebOct 1, 2024 · Fig. 13 presents the runoff responses to the variations of human activities. It shows that for every 1% increase in population and the drainage area of the reservoirs, the … probabilities of draws with replacementWebFor all rainfall patterns, compared to the bare land, surface cover significantly reduced surface runoff and soil erosion by 88.01 to 91.69 % and by 97.80 to 97.95 %, respectively, while subsurface flow was increased from 3.55 to 5.92 times. The reduction benefits of litter cover were comparable to those of grass cover. probabilities of defaultWebSep 2, 2024 · Rainfall and river flow variability in West and Central Africa is a major challenge of water resource management, which drives a range of socio-economic issues … probabilities of successWebApr 6, 2024 · Rainfall and temperature are the two major climatic variables affecting humans and the environment. Hence, it is essential to study rainfall and temperature variability over urban areas. This study focused on analyzing the spatiotemporal trends and variability of rainfall and temperature over Benin metropolitan region, Nigeria. Time series analysis was … probabilities must be non-negativeWebJul 10, 2010 · [6] We are interested in relating the space-time components of rainfall, runoff, and the routing process to the spatial distribution of imperviousness. To achieve this goal, we express the space-time variability of runoff, R(x,y,t) [L T −1], with an equation useful to define the generated runoff into pervious and impervious contributions. probabilities of draws without replacement