This paper aims to realize the extensive application of Internet of things technology in urban waterlogging prevention management system, and has analyzed the security requirement and security architecture of Internet of things technology, and discussed the demand of urban waterlogging prevention management system in combination with the key technology of Internet of things technology, to do th...

The purpose of the study is to identify ecological aspects state natural and technical systems in zone irrigated agriculture effect on example hydrographic network left bank Lower Don. Semikarakorsky district Rostov region was chosen as object study. subject water quality natural-technical – receivers collector-drainage runoff from reclaimed lands, network, irrigation channels, well hydrochemic...

Unlike the simplification of independent line features, the generalization of terrain contour is to handle the “line group”, which describes the geomorphologic characteristics, such as the terrain valley and ridge. In decision level, the real operation object in terrain generalization is not line segment itself but the drainage network contained in the contour representation. This paper present...

Landscape evolution in the eastern Mojave Desert is recorded by sys1ematic changes in Pliocene to latest Pleistocene volcanic: land· forms that show discrete periods of eolian deposition, surface stabilization, drainage-network expansion, and erosion on basaltic lava nows. These processes are documented by K·Ar dating in conjunction with morphometric, sedimentologic. pedologic, and geophysica1 ...

Development of pore network models for real porous media requires a detailed understanding of physical processes occurring on the microscopic scale and a complete description of porous media morphology. In this study, the microstructure of porous media has been represented by three dimensional networks of interconnected pores and throats which are designed by an object oriented approach. Af...

A number of studies have mapped sediment yield at global or regional scales using sediment load measurements from rivers. However, the suitability of the limited mapping methods has not been fully addressed, particularly for large river basins where the sediment load data were obtained from a hierarchical river network. This study examines some of the issues related to the mapping approaches us...

concerns about nitrate pollution in groundwater and downstream systems cause development of surface water management system to reduce losses of agricultural drainage water nitrate in subsurface drainage using subsurface irrigation from existing drainage lines, drainage water during the growing season and out of season is controlled. the overall objective of this study was to evaluate the effect...

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...

Water resource management often requires an integrated assessment of resource use options, including local and regional impacts on the environment and stakeholders. The Upper South East of South Australia is one such location, where a large drainage network has been constructed to manage flooding, dryland salinity and environmental outcomes. Within the drainage network, there are a number of re...