| 鄂尔多斯块体东北缘垂直形变速率等值线精度评定 |
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| 引用本文： | 张占阳,高艳龙,许明元,徐佳垚,邓董建.鄂尔多斯块体东北缘垂直形变速率等值线精度评定[J].测绘与空间地理信息,2016(5):98-101. |
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| 作者姓名： | 张占阳 高艳龙 许明元 徐佳垚 邓董建 |
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| 作者单位： | 中国地震局第一监测中心,天津,300180 |
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| 基金项目： | 地震行业专项(201308009)；一测中心科技创新主任基金(FMC2014011) |
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| 摘 要： | 为进一步分析并评定基于三角网提取的鄂尔多斯块体东北缘垂直形变速率等值线的精度,本文结合基于格网提取的同区域垂直形变速率等值线,分别从数字高程模型(Digital Elevation Model,简称DEM)建立与等值线提取两个角度对研究成果的精度进行对比分析,进而综合两个角度对两种方法提取的垂直形变速率等值线精度进行了差值比较。结果表明,在等值线基值与等值距都相同的条件下,研究区域垂直形变三角网的平均坡度较大,利用三角网提取的垂直形变速率等值线其精度相对较高。
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| 关 键 词： | 测绘 鄂尔多斯块体 垂直形变速率等值线 DEM精度模型 三角网 格网 |
Accuracy Assessment of Vertical Deformation Rate Isolines in the Northeastern Edge of Erdos Block |
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| Abstract: | In order to make deep analysis and assessment on the accuracy of vertical deformation rate isolines which were extracted based on TIN ( triangulated irregular network ) method in the northeastern edge of Erdos block , this paper carried out comparative studies in two aspects including digital elevation model establishment and isolines extraction toward the accuracy of the research which was combined with vertical deformation rate isolines extracted in the same region based on grid network method , and then made accu-racy difference comparison of vertical deformation rate isolines extracted using this two methods in the two aspects .The result proves that average slope of the vertical deformation TIN in the research region reveals a higher value in the case that the base value and inter -val value of the isolines are same to those of isolines extracted based on vertical deformation grid network , and the accuracy of vertical deformation rate isolines extracted based on vertical deformation TIN is higher too . |
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| Keywords: | surveying and mapping Erdos block vertical deformation rate isoline accuracy of digital elevation model triangulated irregular network grid network |
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