نتایج جستجو برای: bank erosion
تعداد نتایج: 93406 فیلتر نتایج به سال:
The current state of pine plantations created on the timber-beamed lands Right Bank Dnieper region is analyzed. It has been established that most influential factors significantly impair condition anti-erosion are Heterobasidion annosum (Fr.) Bref. and grass fires. Based data 26 test areas, which cover typical conditions growth plantations, indicators sanitary were calculated. analysis indicato...
there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...
The article discusses the possibilities of assessing state river beds and changes in them using remote sensing technologies (RS) geographic information systems (GIS). With help geoinformation technologies, an assessment deformation phenomena over past 25 years channel Sokh river, which was chosen as object research, given. Channel have been studied data obtained from satellites. To analyze situ...
Climatic warming and permafrost thaw are predicted to increase Arctic riverbank erosion, threatening communities accelerating sediment, carbon nutrient cycling between rivers floodplains. Existing theory assumes that pore-ice sets erosion rates, but overpredicts observed rates by orders of magnitude. Here, we developed a simple model predicts more modest due sediment-entrainment limitation armo...
Debris flows can grow greatly in size and hazardous potential by eroding bed bank materials. However, erosion mechanisms are poorly understood because debris complex hybrids between a fluid flow moving mass of colliding particles, erodibility varies events, field measurements hard to obtain. Here, we identify the key controls on debris-flow based data set that combines information properties, c...
Meander migration results from the interaction between inner bank accretion and outer erosion/collapse. This has been usually treated as a long-term average of sequence erosion events determined by flow hydrographs. Little attention paid to role that individual collapse play on meander evolution. To fill this gap, we developed numerical model river meandering describes explicitly collapse. Resu...
Abstract The Ningxia reach of the Yellow River (NRYR) is wide and shallow, instability damages are likely to occur at its vulnerable zone. In this study, based on one‐dimensional hydro‐sediment dynamics, two‐dimensional dynamics zone stability analysis model, a coupled model was established analyze scouring risk zones in NRYR during flood season. Considering morphological change bank slope caus...
Abstract Riverbank erosion is one of the most hazardous disaster types for Bangladesh. It has both a direct and negative impact on people their livelihoods. This study aims to explore impacts Meghna riverbank coping strategies that have been adopted by affected combat this calamity, considering four unions under Matlab Uttar Chadpur District. The findings reveal occupational status, income expe...
Spatio-temporal change detection analysis of Jamuna River using low and medium-resolution satellite data between the years 1972 2013 are dynamic to assess river spatio-temporal changes their impacts on local settlements over specific time. This study employs remote sensing geographic information system (GIS) proficiencies identify bank shifting, erosion, depositional features along with populat...
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