This parameter is the wind speed-up, a key parameter in the physics of dunes, which introduces the effect of dune topography on the flow and on the subsequent sand flux over dune flanks. Furthermore, we study the phase diagram of linear dunes for the two dune growth mechanisms. Whereas ...
Sherman Formation and behaviour of aeolian streamers J. Geophys. Res. Earth Surf., 110 (2005), p. FO03011, 10.1029/2004/F000270 Google Scholar Bagnold, 1941 R.A. Bagnold The Physics of Blown Sand and Desert Dunes Methuen, London (1941) Google Scholar Bauer et al., 2009 B.O. Bauer,...
For sand fences, a porosity of 40% or 50% is rec- ommended since it leads to optimal shielding while avoiding the formation of strong vortices. However, none of these studies focused on adjusting the design of the fence array to reduce building cost. Therefore, we investigate the shear ...
Combined with Sentinel-1, Sentinel-2, and GDEM (V3), the deep learning algorithm based on the convolution neural network can timely and effectively monitor the changes of sand dunes, which can be used for large-scale aeolian landforms. Keywords: deep learning; aeolian landform; remote sensing ...
2015-01-27上传 grain segregation mechanism in aeolian sand ripples 文档格式: .pdf 文档大小: 310.76K 文档页数: 9页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: 论文--大学论文 文档标签: grainsegregationmechanisminaeoliansandripples ...
Sediment samples were collected from the bare dunes area at the same time as control material for each slope position. All samples were dried and further processed at the lab after sampling. Figure 5 Schematic diagram of sampling points. Full size image Determination of sediment grain size Sample...
Formation mechanism and treatment measures of active dunes in Cuona Lake. Qinghai-Tibet Railw. Geotech. Eng. Technol. 06(311–314), 360 (2002). Google Scholar Shengchang, Ge. & Linsen, Z. Causes and countermeasures of sand damage in Lanzhou-Xin Railway. Railw. Transp. Econ. 01, 33...
Wind erosion is a huge challenge for ecologists to stabilize sand dunes and to change them into stable productive ecosystems. In order to better understand its role in the process of ecological restoration, the sediment grain-size characteristics of comp
The soil moisture levels in the middle and deep layers of the four types of micro-geomorphic units exhibit a relatively concentrated pattern, whereas the surface layer soil moisture on the bottom, windward and top of the sand dunes displays a bimodal or multi-peak distribution pattern. Figure 5...
Dune provenance is an essential topic in the study of aeolian landforms, with their source characteristics and the dynamics that drive dune formation dominating the formation and evolution of dunes [52]. The probabilistic accumulation curves for both mobile dunes and nebkhas are three-stage (Figure...