نتایج جستجو برای: guided land leveling
تعداد نتایج: 214996 فیلتر نتایج به سال:
The Modified Arkansas Off-Stream Reservoir Analysis (MARORA) model estimates the economics of on-farm reservoirs and other water conservation improvements in alternative ground water situations. With restricted ground water supply, a combination of different water conservation methods is estimated to provide the greatest economic return. On-farm reservoirs are not economical if ground water is ...
Synthetic Aperture Radar Interferometry (InSAR), widely applied for the monitoring of land subsidence, has the advantage of high accuracy and wide coverage. High-resolution SAR data offers a chance to reveal impressive details of large-scale man-made linear features (LMLFs) with Multi-temporal InSAR (MT-InSAR) analysis. Despite these advantages, research validating high-resolution MT-InSAR resu...
Land leveling or land grading of surface irrigated fields improve irrigation water distribution and application efficiencies, conserve increases crop productivity. formation for face many constraints (ensuring proper slopes, prevention flood, ensuring canal command over the field, optimizing earthwork, minimizing truck travel distances, equipment utilization). Design engineers traditionally, pe...
The Venice Lagoon, Italy, is a unique worldwide environment which is presently vulnerable due to loss in surface elevation as a result of land subsidence referred to the mean sea level. Land displacements in the Venice coastland have been determined over time by traditional monitoring techniques (i.e., spirit leveling and GPS). Recently, SAR-based analyses have been used to complement the groun...
The chernozem has high productivity, most of which is located in Northeast of China. Considering the restrictions of land use and terrain and meteorological conditions, soil erosion and degradation often result in lower agricultural output than expected. Land consolidation is served to consolidate parcels and to enlarge holdings as well as included provisions such as irrigation, drainage infras...
In the Beijing plain, the long-term groundwater overexploitation, exploitation, and the utilization of superficial urban space have led to land subsidence. In this study, the spatial–temporal analysis of land subsidence in Beijing was assessed by using the small baseline subset (SBAS) interferometric synthetic aperture radar (InSAR) technique based on 47 TerraSAR-X SAR images from 2010 to 2015....
There are three popular methods to understand the land subsidence: leveling, Global Navigation Satellite System, and Interferometric Synthetic Aperture Radar (InSAR) analysis using SAR images. While both leveling System can measure amount of subsidence only at specific points, InSAR observe a wide area in short time intervals. In terms accuracy, however, is inferior leveling; centimeter/millime...
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