نتایج جستجو برای: morphometry of drainage networks

تعداد نتایج: 21228691  

Journal: :Contributions to Zoology 2022

Abstract Several recent notes prove that taxonomic relations of close relative animal groups (species complexes or cryptic species) can be revealed by the combined use genetic and morphologic methodologies. At same time scarce information found about how phylogeny, population origin, sexual dimorphism affect morphometric features these species. In our present work, we performed simultaneous phy...

2002
Robert A. Craddock Alan D. Howard

[1] Valley networks provide compelling evidence that past geologic processes on Mars were different than those seen today. The generally accepted paradigm is that these features formed from groundwater circulation, which may have been driven by differential heating induced by magmatic intrusions, impact melt, or a higher primordial heat flux. Although such mechanisms may not require climatic co...

Journal: :Structure and Infrastructure Engineering 2022

Hydrodynamic models are used to analyse water networks (water distribution, drainage, surface water, district heating, etc.). The non-linear nature of flows necessitates the use iterative solution methods in hydraulic modelling. This requires a relatively large computational effort. To reduce this effort, networks, network forcing and/or flow often simplified and analysed using Graph Theory. si...

1997
ALAN D. HOWARD A. D. HOWARD

A drainage basin simulation model is used to interpret the morphometry and historical evolution of Mancos Shale badlands in Utah. High relief slopes in these badlands feature narrow divides and linear profiles due to threshold mass-wasting. Threshold slopes become longer in proportion to erosion rate, implying lower drainage density and higher relief. By contrast, in slowly eroding areas of low...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده کشاورزی 1386

چکیده ندارد.

Journal: :Computers & Geosciences 2007
I. Molloy Tomasz F. Stepinski

Martian valley networks bear some resemblance to terrestrial drainage systems, but their precise origin remains an active research topic. A limited number of valley networks have been manually mapped from images, but the vast majority remains unmapped because standard drainage mapping algorithms are inapplicable to valleys that are poorly organized and lack spatial integration. In this paper we...

Journal: :journal of agricultural science and technology 2010
m. m. heidari s. kouchakzadeh e. bayat

a subsurface drainage network mainly carries unsteady flow and data are not usually available for model parameters calibration in such networks. in the present research, the finite volume method using the time splitting scheme was employed to develop a computer code for solving the one dimensional unsteady flow equations. using corrugated sub drainage pipes, an experimental prototype setup was ...

Journal: :International Journal of Geographical Information Science 2013
Ling Zhang Eric Guilbert

In both GIS and terrain analysis, drainage systems are important components. Owing to local topography and subsurface geology, a drainage system achieves a particular drainage pattern based on the form and texture of its network of stream channels and tributaries. Although research has been done on the description of drainage patterns in geography and hydrology, automatic drainage pattern recog...

Journal: :Alzheimers & Dementia 2023

Background Brain hubs are highly connected regions important for integrating cognitive processing in the healthy brain. also play role neurodegeneration causing dementia. However, it is not clear what brain morphometry most useful identifying critical to their involvement neurodegeneration. Method We examined network from four measures of cortical morphometry, derived using anatomical T1-weighe...

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