| 基于数字填图系统的遥感等数据在构造-地层分区和地层单位识别中的应用——以1：25万民和县幅、临夏市幅和定西市幅数字地质填图为例 |
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| 引用本文： | 张克信,;孙赜,;于庆文,;李超岭,;朱云海,;张旺生,;寇晓虎.基于数字填图系统的遥感等数据在构造-地层分区和地层单位识别中的应用——以1：25万民和县幅、临夏市幅和定西市幅数字地质填图为例[J].中国区域地质,2008(7):965-973. |
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| 作者姓名： | 张克信 ;孙赜 ;于庆文 ;李超岭 ;朱云海 ;张旺生 ;寇晓虎 |
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| 作者单位： | [1]中国地质大学(武汉)生物地质与环境地质教育部重点实验室,湖北武汉430074; [2]中国地质大学武汉地球科学学院,湖北武汉430074; [3]吉林师范大学旅游与地理学院,吉林四平136000; [4]中国地质调查局发展研究中心,北京100037; [5]中国地质大学(武汉)地球科学学院,北京100037 |
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| 基金项目： | 中国地质调查局项目（编号：200213000H016、200413000007、1212010350202和基[2003]009-02）资助.中国地质调查局提供了ETM^＋和地形数据.参加野外工作的还有中国地质大学（武汉）的樊光明教授、林启祥副教授、骆满生副教授和顾延生副教授.在此一并表示感谢. |
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| 摘 要： | 在甘肃和青海交界地区的1：257Y民和县幅、临夏市幅和定西市幅数字区域地质调查中，以“数字填图系统（RGMAP）”为平台，使用遥感ETM^＋数据和地形数据对岩石地层进行了信息挖掘。数据准备主要是遥感和数字地形多源信息的提取和预处理．从数字地形图的等高线数据中提取高程，进而提取汇水网络等水文信息和地形参数。遥感数据经过地形校正、线性增强、色彩拉伸，进行空间分辨率增强，经彩色合成并结合数字高程，实现了对调查区构造-地层区划和部分岩石地层单元的识别。实践证明该项工作是地质填图的重要辅助手段。
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| 关 键 词： | 数字地质调查 遥感 数字高程模型 岩石地层单位 构造-地层分区 |
Application of remote sensing data to the tectonostratigraphic division and recognition of stratigraphic units based on the digital mapping system-A case study of 1：250000 digital geological mapping of the Minhe County,Linxia City and Dingxi City sheets,northwestern China |
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| Institution: | ZHANG Ke-xin, SUN Ze, YU Qing-wen, LI Chao-ling, ZHU Yun-hai, ZHANG Wang-sheng, KOU Xiao-hu(1. Key Laboratory of Biogeology and Environmental Geology, Ministry of Education, China University of Geosciences, Wuhan 450074, Hubei, China; 2. Faculty of Earth Sciences, China University of Geosciences, Wuhan 450074, Hubei, China; 5. Jilin Normal University, Siping 156000, Jilin, China; 4. China Geological Survey,Beijing 100057, China; 5. Development and Research Center of China Geological Survey, Beijing 100057 ,China) |
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| Abstract: | The ETM＋ and DEM （digital elevation model） data were used to help extracting information of lithostratigraphic units based on the ＂digital mapping system＂ in 1：250 000 digital regional geological survey of the Minhe County, Linxia City and Dingxi City sheets in the border region of Gansu and Qinghai. The data preparation mainly involves remote sensing and landform information extraction and preprocessing. DEM data were derived from contours of the digital relief map. Other hydrologic and topographic pa- rameters were derived from DEM, for instance, drainage network. After topographic correction, linear enhancement, color elongation, the rate of spatial resolution of remote sensing data was enhanced. Through color synthesis, combined with DEM, the tectono-strati- graphic divisions and recognition of some lithostratigraphic units in the study area were achieved. Practice proves that this work is an important auxiliary means for geological mapping. |
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| Keywords: | digital geological mapping remote sensing DEM （digital elevation model） lithostratigraphic unit tectono-stratigraphic divisions |
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