نتایج جستجو برای: beach sediment
تعداد نتایج: 45335 فیلتر نتایج به سال:
A kerosene type hydrocarbon fraction (equivalent to 7 L m(-2)) was added to enclosures in the surface layer of high-arctic intertidal beach sediment. The experimental spill was repeated in two consecutive years in the period July-September. The rate and extent of hydrocarbon removal and the accompanying bacterial response were monitored for 79 days (2002) and 78 days (2003). The bulk of added k...
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...
The evolution of a barrier island and its stratigraphic architecture is investigated with the numerical model BIT (barrier island translation). The model simulates, with simplified equations, the effects of various processes (wind waves, storm surges, sea-level oscillations) on sediment location and characteristics. The presented formulation is able to reproduce both the cross-shore profile and...
We investigated the influence on bacterial community and biochemical variables through mechanical disturbance of sediment-akin to small-scale mining in Kalbadevi beach, Ratnagiri, a placer-rich beach ecosystem which is a potential mining site. Changes were investigated by comparing three periods, namely phase I before disturbance, phase II just after disturbance, and phase III 24 h after distur...
Barrier islands are complex and dynamic systems that provide critical ecosystem services to coastal populations. Stability of these systems is threatened by rising sea level and the potential for coastal storms to increase in frequency and intensity. Recovery of dune-building grasses following storms is an important process that promotes topographic heterogeneity and long-term stability of barr...
The role of geotechnical properties and soil behavior for beach dynamics has been recognized before, but field measurements in energetic environments are still rare. This study focused on two days along a cross-shore transect reaching from the foot dunes to upper subtidal zone at western sandy island Sylt, Germany, just south city Westerland. Sediment parameters were obtained sediment sampling ...
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