基于差分GPS测量数据的抛物线沙丘形态特征研究  

The Morphological Character Research of Parabolic Dune-based on the Date of Differential GPS Survey

作　　者：陈秀玲[1] 李志忠[1,2] 陈蜀江[2] 孙浩捷[2] 靳建辉[1] 曾雅娟[2] 刘小超[2] 

机构地区：[1]福建省亚热带资源与环境重点实验室,福建师范大学地理科学学院,福建福州350007 [2]新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054

出　　处：《福建师范大学学报（自然科学版）》2010年第3期84-89,共6页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家“十一五”科技支撑计划项目第七课题(2007BAC15B07);新疆维吾尔自治区自然科学基金资助项目(200821103)

摘　　要：以新疆伊犁塔克尔莫乎尔沙漠沙丘为研究对象,运用差分GPS接收机Trimble5700及随机软件的数据分析功能,结合区域风况、植被等自然条件对所选样方沙丘的形态进行了测量和统计分析.结果表明:所研究沙丘的平面形态为U形、开口面向西侧来风方向,弧顶顺风向东凸出,沙丘长轴走向与当地合成风向一致;在纵剖面上,弧顶沙丘坡度呈现迎风坡较缓、背风坡较陡;风蚀洼地和迎风坡上部风蚀特征明显.沙丘形态特征显示,沙漠北部和中部抛物线沙丘发育时间较长,南部沙丘大多处于幼年期阶段.差分GPS测量及其后台数据处理技术是现代风沙地貌形态和动力过程研究的重要手段.Take the parabolic dune of Takermohuer desert in Xinjiang as research object, the paper applies the differential GPS receiver of Trimble5700 and the data analysis function of the attached software with the machine for surveying and analyzing the morphological character of parabolic dune. The result shows that the data measured can extract the morphological characteristics parameters effectively, such as the direction of the wind, slope aspect, slope, area and volume parameters. It provides more valuable information for the research of searching sand dunes Kinetic mechanism and regional synthesis direction of sediment transportation. Compared to the traditional methods of measurement and data processing, the significant advantage of GPS receiver of Trimble5700 is much more informative, accurate and efficient, and it has been an important technical means to study the causes of morphology of the modern topography.

关 键 词：DEM 抛物线沙丘 形态特征 新疆 

分 类 号：P231.5[天文地球—摄影测量与遥感]