Results 61 to 70 of about 213,555 (196)
Shuitu Baochi Xuebao, 2016 为探讨同时率定CN值和初损率2个参数得到的模拟结果是否比单独率定一个参数更为理想，且在不同土地利用类型下SCS-CN模型是否均适用，选取了密云水库上游石匣小流域为研究区域，根据石匣小流域坡面试验小区2006—2010年实测降雨-径流数据和SCS-CN模型的计算公式，在0.05～0.40范围内，等间隔选取8个不同的初损率值，并利用算术平均值法反推各初损率值条件下对应的CN值，以纳什效率系数为SCS-CN模型的适用性评价参数，确定裸地、耕地、草地和林地4种不同土地利用类型下模拟最佳的CN值与初损率 ...
何杨洋, 王晓燕, 段淑怀
doaj
Simulation and Optimization Strategy of Storm Flood Safety Pattern Based on SCS-CN Model. [PDF]
Int J Environ Res Public Health, 2022 Cai X, Xu D.
europepmc +1 more source
, 2011 【目的】初损率是SCS-CN方法进行流域地表径流预报的基础输入参数之一,影响着径流模拟精度。论文通过研究确定黄土丘陵沟壑区典型小流域初损率取值,为SCS-CN方法在该地区的适用性评价提供参考。【方法】SCS-CN方法中,初损率定义为初损量(Ia)与流域最大蓄水能力(S)的比值,通常取标准值0.2。然而,已有研究表明不同区域初损率取值存在差异。论文选取黄土丘陵沟壑区桥子西沟小流域1987—2006年14场典型降雨事件,采用反算法(BC)和事件分析法(EA)确定流域初损率。【结果】结果表明 ...
雷廷武, 周淑梅
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An improved I-a-S relation incorporating antecedent moisture in SCS-CN methodology
, 2006 Employing a large dataset of 84 small watersheds (area = 0.17 to 71.99 ha) of U.S.A., this paper investigates a number of initial abstraction (I-a )-potential maximum retention (S) relations incorporating antecedent moisture (M) as a function of ...
ELDHO, TI +3 more
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Remote Sensing, 2019 This study analyzes the impact of land use/land cover (LULC) changes on the hydrology of the dry Afromontane forest landscape in northern Ethiopia. Landsat satellite images of thematic mapper (TM) (1986), TM (2001), and Operational Land Imager (OLI ...
Belay Manjur Gebru +4 more
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Investigation of the direct runoff generation mechanism for the analysis of the SCS-CN method applicability to a partial area experimental watershed [PDF]
Hydrology and Earth System Sciences, 2009 The Soil Conservation Service Curve Number (SCS-CN) method is widely used for predicting direct runoff volume for a given rainfall event. The applicability of the SCS-CN method and the direct runoff generation mechanism were thoroughly analysed in a ...
K. X. Soulis +3 more
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Sensitivity of Direct Runoff to Curve Number Using the SCS-CN Method [PDF]
, 2019 This study explores the impact of runoff curve number (CN) on the hydrological model outputs for the Morai watershed, Sindh-Pakistan, using the Soil Conservation Service Curve Number (SCS-CN) method.
Babar, Muhammad Munir +5 more
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Incertezas e erros na estimativa de vazões usando modelagem hidrológica e precipitação por RADAR
Revista Ambiente & Água, 2017 Esse artigo apresenta uma análise das incertezas e erros do modelo SCS-CN do Hydrologic Engineering Center - Hydrologic Modeling System (HEC-HMS), para eventos hidrológicos com dados de precipitação observada e estimada por RADAR na bacia do rio São ...
Samuellson Lopes Cabral +2 more
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Regional Calibration of SCS-CN L-THIA Model: Application for Ungauged Basins
, 2014 Estimating surface runoff for ungauged watershed is an important issue. The Soil Conservation Service Curve Number (SCS-CN) method developed from long-term experimental data is widely used to estimate surface runoff from gaged or ungauged watersheds ...
Ji-Hong Jeon, Kyoung Lim, Bernard Engel
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Simplified SMA-inspired 1-parameter SCS-CN model for runoff estimation
, 2018 This study proposes a simplified 1-parameter SCS-CN model (M5) based on Mishra-Singh (2002) model and soil moisture accounting (SMA) procedure for surface runoff estimation and compares its performance with the existing SCS-CN method (SCS, 1956) (M1 ...
Verma, Sangeeta, +7 more
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