نتایج جستجو برای: permanent gullies
تعداد نتایج: 62766 فیلتر نتایج به سال:
[1] We have conducted surveys of gullies that developed in a small, steep watershed in the Idaho Batholith after a severe wildfire followed by intense precipitation. We measured gully length and cross sections to estimate the volumes of sediment loss due to gully formation. These volume estimates are assumed to provide an estimate of sediment transport capacity at each survey cross section from...
different types of soil erosion including gully erosion occur in many parts of iran. the west of iran is further threatened by gully erosion due to its specific physical and climatic conditions. however, few studies have been carried out to study the sediment production of gully erosion in iran. this research was therefore conducted to measure storm-wise sediment production of gully erosion in ...
Soil erosion is one of the most challenging environmental issues in world, causing unsustainable soil loss every year. In South Africa, several episodes gully have been documented and clearly linked to presence Quaternary colluvial deposits on Drakensberg Mountain footslopes. The aim this study was identify assess triggering factors upper Mkhomazi River basin KwaZulu-Natal, Africa. We compiled ...
Abstract This work uses a high-quality 3D seismic volume from offshore Canterbury Basin, New Zealand, to investigate how submarine canyon systems can focus sub-surface fluid. The was structurally conditioned improve the contrast in reflections, preserving their lateral continuity. It reveals multiple pockmarks, eroded gullies and intra-slope lobe complexes occurring association with Waitaki Sub...
Areas with a high density of large-scale gullies are frequent in regions the crystalline basement Southeastern Brazil, such as Bação Complex. These pose hazard for people and properties, cause loss agricultural land, among other impacts. Gullies originating erosion by channelized runoff can be controlled their first stages ordinary containment practices. However, when erosive channels reach gro...
Erosion and sediment delivery have been undergoing considerable variations in many catchments worldwide owing to climate change human interference. Monitoring on-site erosion deposition is crucial for understanding the processes mechanisms of changes yield from catchments. The Ten Kongduis (kongdui transliteration ephemeral creeks Mongolian) are 10 tributaries upper Yellow River. Severe upstrea...
Linear dune gullies on poleward-facing Martian slopes are enigmatic. Formation by CO2-ice block or snow cornice falls has been proposed based optical imagery of bright, high-albedo features inside gully channels. Because these often resemble patchy frost residue rather than three-dimensional blocks, more evidence is needed to support the ice-block formation mechanism. Satellite captured two sim...
[1] A unique morphology suggestive of viscous flow of a meters-thick surface layer was identified in high-resolution (<10 m/pixel) Mars Orbiter Camera (MOC) images. A global survey of 13,000 MOC images resulted in the identification of 146 images exhibiting these viscous flow features. Slope angles derived from Mars Orbiter Laser Altimeter (MOLA) data, along with an experimentally derived flow ...
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