摘要
基于美国SRTM-DEM数据,利用彩色晕染、密度分割与GIS空间统计分析等技术,并结合地质资料,通过地形高程、地表坡度及地形剖面等分析手段,对阿尔泰山的构造地貌特征进行初步分析。研究表明,阿尔泰山脉平均海拔约1 790 m,平均坡度约21°,其高海拔与高坡度的现代地貌特征,主要与强烈的断裂构造活动有关;山脉严格受到以北西向为主的断裂构造活动的影响与控制,其发育的构造地貌单元基本上呈北西走向特征;山脉阶梯状地貌特征明显,共发育5级剥夷面,不同级剥夷面所处的海拔不一样,同级剥夷面具有东北侧高于西南侧,山脉东、中段高于西段的特点。
Based on American SRTM -DEM（90m） data and geological information and adopting color-dye, density - class and GIS spatial statistic analysis technology, the authors studied geomorphological characteristics of the Altay Mountain by means of topography - elevation analysis, surficial - slope analysis and terrain - section analysis. According to the results of the study, the Altay Mountain has an average altitude of 1 790 m and an average surficial slope of 21°, and the current geomorphological characteristics of high altitude and steep slope are mainly attributed to strong tectonic activities ; the mountain range is strictly affected or controlled by the NW - trending fault activity, and hence the geomorphological cells mostly extend in the NW direction; the mountain assumes obvious ladder - like modem geomorphology, and has developed 5 - level denudation - planation surfaces with different altitudes, with the northeast denudation - planation surface higher than the southwest surface, and the east and central denudation -planation surface higher than the west surface.
出处
《国土资源遥感》
CSCD
2007年第3期62-66,I0006-I0007,共7页
Remote Sensing for Land & Resources
基金
国家攻关项目(2004DFBA0005)
国家973项目(2005CB724803)
中国地震局地震科学基金项目(C07007)联合资助
关键词
SRTM—DEM
阿尔泰山
构造地貌
剥夷面
SRTM - DEM
The Altai mountain
Geomorphology
Denudation - planation surface
