Wind Energy Environments and Aeolian Geomorphology in the Western and South-Western Tengger Desert
In this paper,wind regime data of automatic weather stations and Google Earth images were used to analyze the wind energy environments and aeolian geomorphology in the western and south-western Tengger Desert,China.Results indicate that the wind regime and wind energy change from north to south.Annual average wind speed is the largest in the north part of the study region,and then in middle part,and the least in the south part.Wind energy is high in north part of the study region,but it is low in other parts.The main and secondly directions of sand-blowing wind in the north part of the study region are north-west and north-east,respectively,and the main and secondly directions of sand-blowing wind are north-west and south-east in the middle part of the study region,but in the south part of the study region the main direction of sand-blowing wind is north-west and the secondly direction of sand-blowing wind,south-east,is very less.Sand dunes are mainly reticulate dunes,barchan dunes and vegetation linear dunes in the study region.Wind energy environments,sand supply and vegetation cover determine the dune formation characteristics.In the middle part of the study region,wind energy is higher,sand supply is more sufficient and vegetation cover is lower than in the south part of the study region,so the distances between major ridges of reticulate dunes in the middle part of the study region are larger than distance between barchan dunes in the south part of the study region.In all the parts of the study region,the orientations of reticulate dunes are similar,and all are between 205° and 225°.In the south part of the study regions,there is a large area of vegetation linear dunes,and the distances between the dunes are 0.8-2.0 km with the average value of 1.37 km,and the orientations of the dunes are between 164° and 176°.
NETL
NSTL
万方数据
维普
