نتایج جستجو برای: longshore sediment transport lst
تعداد نتایج: 307451 فیلتر نتایج به سال:
sedimentation is one of the most important problems in harbors that results in considerable economic costs. harbor planforms affects the flow pattern in the harbor basin and consequently, plays an important role in sediment transport and sedimentation. in the present study, a two dimensional depth-averaged hydrodynamic and sediment transport model has been developed to investigate the effect of...
This paper investigates the impact of climate change on coastal dynamics along Adriatic Italian coast, with reference to period 2021–2050 considering IPCC RCP 4.5 and 8.5 scenarios. The wave datasets are obtained by forcing a spectral model ERA5 wind fields corrected procedure that makes them suitable for investigated semi-enclosed basin where local meteorological events occur at scales few kil...
all experiments in this study were carried out in a flume which was located in the hydraulic laboratory of technical faculty in guilan university. the wave flume was 12 m long, 0.5 m wide, 0.5 m high and equipped with a wave-producing system and ultrasonic sensors. the objectives of current experimental study are to investigate sediment transport, bed formation and sustainability of sandy beach...
The morphodynamics of an artificial gravel beach in the Bay Rijeka (Ploče Beach) was analyzed. morphological changes face were monitored through intense situation gravitational surface wind waves from incident SSW direction. A numerical modeling technique applied, after initially establishing a model for wave deformation. sediment transport established based on its results. Both models finite v...
Coastal hydro-morphodynamics present significant uncertainties, one order of magnitude larger for sediment transport than the driving hydrodynamics. Met-ocean factors (waves, currents, and levels essentially) are normally selected from a probability distribution, where only central trend is considered, then analysis hydro-morphodynamic processes carried out within deterministic framework. This ...
Depending on the amount of aeolian sediment input and dune erosion, dune size and morphology change over time. Since coastal foredunes play an important role in the Dutch coastal defence, it is important to have good insight in the main factors that control these changes. In this paper the temporal variations in foredune erosion and accretion were studied in relation to proxies for aeolian tran...
The seasonality of the 21st century trends in tropical lower stratospheric temperature (LST) is examined in simulations by a group of comprehensive chemistry-climate models. In contrast to the past LST trends, there is robust seasonal dependence among ensembles of the same model. Furthermore, most models show strongest cooling around July–September and minimal cooling in February–March, which r...
in this study, the process-based watershed model, soil and water assessment tool (swat), was used for simulating hydrology and sediment transport in the gharesou watershed and for identifying critical areas of soil erosion and water pollution. after model calibration and uncertainty analysis using sufi-2 (sequential uncertainty fitting, ver. 2) method, the outputs of the calibrated model were u...
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