Time variation of runoff
WebFor 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. 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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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 8.74 billion m 3 before 1990 and 4.67 billion m 3 from 1990 to 2011, a decrease of 41%.
WebNov 7, 2024 · In Figure 7, the interval between the occurrence time of snowmelt runoff and glacier melt runoff is different in different years. For example, in 2013, the interval was ... "Variation of Runoff and Runoff Components of the Lhasa River Basin in the Qinghai-Tibet Plateau under Climate Change" Atmosphere 13, no. 11: 1848. https ... 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 water resources management and regulation in the Huaihe River basin of China. This research proposed a combinatorial mutation test method to study the interannual …
WebApr 11, 2024 · This reflects significant variability in hydrological processes and runoff components in the three source regions. The d-excess values of these three source regions were higher than 10‰, with the order of LCR>YLR>YZR; these results are related to westerly moisture transport and cold temperatures, which may indicate that precipitation is the … WebCHARACTERISTICS OF RUNOFF Peak Discharge Time Variation of Runoff - Hydrograph Stage versus Discharge for Stream Channels Total Volume of Runoff Frequency of Runoff …
WebDec 30, 2024 · The objectives of this study are: (1) to test the variation trend and sudden change year of runoff, rainfall, and potential evaporation; (2) to calculate the hydrological change degree; (3) to analyze the contribution of climate and underlying surface changes to runoff; (4) to analyze the change of drought in the basin; (5) to evaluate the changes of …
WebAug 1, 2024 · Therefore, based on longer runoff series at more stations, the study attempts to systematically investigate the spatiotemporal characteristics of runoff variation and quantified the impacts of precipitation variation on runoff on space-time multi-scales in the YZB, using a comprehensive analysis method. how hard to become navy sealWebJul 13, 2024 · At the same time, the impact of human activities on hydrological processes is mainly through land use, soil and water conservation and water conservancy projects to change the underlying surface properties of the basin, so as to lead to spatial-temporal variations in the hydrological cycles and exert impact on runoff [7,8]. how hard should your workoutWebOct 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). how hard should you grip a golf clubWebFor 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, … how hardtack was soldWebJan 10, 2024 · Therefore, the objectives of this study were to (i) calibrate and verify the SWAT model parameters using NSGA-II (nondominated sorting genetic algorithm-II) in the Yanhe River Watershed; (ii) investigate the variation characteristics of the sensitivity of runoff and sediment parameters in different years and months using the Sobol’ method; … how hard to find job for older deafWebJun 2, 2024 · This study investigates the model performance of different partitioning based on rainfall spatial variability through peak volume (Qp) and time to peak (Tp), along with the rainfall event process. highest rated florists 08527WebJan 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. how hard should workout be