نتایج جستجو برای: cross sand dunes
تعداد نتایج: 518686 فیلتر نتایج به سال:
Mega-dunes in the lake group area of Badain Jaran Sand Sea, China, are generally taller than dunes non-lake area. This spatial distribution dune heights may provide a new perspective on controversy regarding dunes’ formation mechanism. In this study, we calculated relative and slopes individual based digital elevation model, confirmed height abnormally tall sand sea. It was also found that more...
The Olympic Dam archaeological salvage program covers an area of 600 km2 and contains more than 16,500 archaeological sites, most of which are open scatters of stone artefacts on linear sand dunes. Optically stimulated luminescence (OSL) dating offers an opportunity to date recent phases of dune movement and stability, and to provide a chronology for archaeological material on and in the sand b...
Cellular automata have been successfully used to model the sand dynamics of aeolian dunes and ripples. The cellular automata Monte-Carlo model proposed in this paper expands the capabilities of cellular automata models to under water ripple formation introducing not a two dimensional matrix but two three dimensional volumes, being a sand volume and a water volume. The proposed model has the cap...
[1] New methods of data collection and processing are developed to provide quantitative, reach-scale measurements of bedform transport mass within the tidally influenced Mississippi River. A multibeam swath profiler was used to collect daily bathymetry over a range of water discharges, and bed elevation changes induced by dune migration are measured. These values are coupled with bulk physical ...
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