نتایج جستجو برای: bedform
تعداد نتایج: 222 فیلتر نتایج به سال:
Abstract Tectonically controlled topography influences deep-water sedimentary systems. Using 3-D seismic reflection data from the Levant Basin, eastern Mediterranean Sea, we investigate spatial and temporal evolution of bedforms on a fan cut by an active normal fault. In footwall, comprises cyclic steps antidunes along its axial external portions, respectively, which interpret to result variati...
Streamlined subglacial bedforms observed in deglaciated landscapes provide the opportunity to assess sensitivity of glacier dynamics bed characteristics across broader spatiotemporal scales than is possible for contemporary glacial systems. While many studies streamlined rely on manual mapping and qualitative (i.e., visual) assessment, we semi-automatically identify 11,628 sedimentary bedrock b...
1. Land-use studies are challenging because of the difficulty of finding catchments that can be used as replicates and because land-use effects may be obscured by sources of variance acting over spatial scales smaller than the catchment. To determine the extent to which land-use effects on stream ecosystems are scale dependent, we designed a wholecatchment study of six matched pairs (pasture ve...
This paper characterizes the detailed sedimentology of a fluvial sandbody on Mars for the first time and interprets its depositional processes and palaeoenvironmental setting. Despite numerous orbital observations of fluvial landforms on the surface of Mars, ground-based characterization of the sedimentology of such fluvial deposits has not previously been possible. Results from the NASA Mars S...
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