Stream power index计算
Webcos(a) 所有数字类型 计算给定a的余弦值。 tan(a) 所有数字类型 计算给定a的正切值。 cot(a) 所有数字类型 计算给定a的余切值。 asin(a) 所有数字类型 计算给定a的反正弦值。 acos(a) 所有数字类型 计算给定a的反余弦值。 atan(a) 所有数字类型 计算给定a的反正切值。 WebApr 5, 2024 · where = stream power per unit of flow length (W/m); = density × gravity acceleration = specific weight of the fluid (kg/m 3 ); Q = flow discharge (m 3 /s); S = local …
Stream power index计算
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WebSAGA-GIS Tool Library Documentation (v3.0.0) Tools A-Z Contents Terrain Analysis - Hydrology Tool Stream Power Index. Calculation of stream power index based on slope and specific catchment area (SCA). WebSediment transport index. This tool can be used to calculate the sediment transport index (STI) described by Moore and Burch (1986). This index is derived from unit stream-power …
WebStream power is the rate of energy dissipation against the bed and banks of a river or stream per unit downstream length. It is given by the equation: where Ω is the stream power, ρ is the density of water (1000 kg/m 3 ), g is acceleration due to gravity (9.8 m/s 2 ), Q is discharge (m 3 /s), and S is the channel slope. [5] WebSAGA-GIS Tool Library Documentation (v8.1.1) Tools A-Z Contents Terrain Analysis - Hydrology Tool Stream Power Index. Calculation of stream power index based on slope and specific catchment area (SCA).
WebStream Power Index. Abstract. Calculation of stream power index based on slope and specific catchment area (SCA).SPI = SCA * tan (Slope) Type. Property. Value. Assemblies. GDALRasterMapping.exe. $ (DataMappingPath)\GDALRasterMapping\. Web–Outline 图计算系统 GraphLabPowerGraph 数据流系统storm –内容 1.GraphLab 单机系统共享内存 多个线程都可以访问图数据线程之间不用发送和接收消息 异步计算 不分超步，允许不同顶点有不同的更新速度适合支持机器学习算法，在不同部分收敛速度不同…
(Total) Stream power Stream power is the rate of energy dissipation against the bed and banks of a river or stream per unit downstream length. It is given by the equation: $${\displaystyle \Omega =\rho gQS}$$ where Ω is the stream power, ρ is the density of water (1000 kg/m ), g is acceleration due to gravity … See more Stream power originally derived by R. A. Bagnold in the 1960s is the amount of energy the water in a river or stream is exerting on the sides and bottom of the river. Stream power is the result of multiplying the … See more Size of displaced sediment Critical stream power can be used to determine the stream competency of a river, which is a measure to determine the largest grain size … See more Landscape evolution Stream power is used extensively in models of landscape evolution and river incision. Unit stream power is often used for this, because simple models use and evolve a 1-dimensional downstream profile of the river … See more Although many authors had suggested the use of power formulas in sediment transport in the decades preceding Bagnold's work, and in fact Bagnold himself suggested it … See more It can be derived by the fact that if the water is not accelerating and the river cross-section stays constant (generally good assumptions for an averaged reach of a stream over a modest distance), all of the potential energy lost as the water flows downstream must … See more • Hydrology • Geomorphology • Erosion • Sediment transport See more
WebApr 10, 2024 · An Idaho mother who is accused of killing her two children and conspiring to kill her husband's ex-wife was motivated by "money, power and sex," prosecutors said as opening statements in her trial ... guitar chords summer in the cityWebSPI=Stream Power IndexSTI=Sediment Transport IndexCTI=Compoud Topographic Index TWI=Topographic Wetness Index（一般来说范围是-3到30，但是也有学者指出是0到30， … guitar chords tabs of bye bye blackbirdWeb指数计算公式： 本文介绍如何在ArcGIS中利用DEM数据进行水流强度指数（stream power index，SPI）和地形湿度指数（topographic wetness index，TWI）的计算。 DEM数据可在【数据分享】系列推文中免费获取。 TWI是区域地形对径流流向和蓄积影响的物理指标。公式 … guitar chords sweet baby jamesWebDownload scientific diagram Stream power index (SPI) and topographic wetness index (TWI) maps of the study area produced from 2012 DTM. from publication: A Novel Performance Assessment Approach ... bovis headcornWebThe Stream Power Index (SPI) is closely related to the topographic wetness index and is used to estimate the erosive power of the terrain. Areas with large stream power indices have a great potential for erosion. If total stream power is greater than that required to transport the sediment available (supply limited), then there will be a net ... guitar chords - sway me nowWebFeb 18, 2024 · Welcome to Best GIS Tutorials. in this lecture you will learn that how to calculate stream power index in gis software follow the procedure step by step if you … bovi sheetsWebStream power index. Stream power index (SI)* takes into account data on catchment area and slope gradient: , where CA and G are catchment area and slope gradient, respectively. … bovis helvetia