联合CryoSat-2测高数据和地面高程数据建立东南极拉斯曼丘陵地区DEM

发布时间：2018-05-20 21:36

  本文选题：南极 + 拉斯曼丘陵　； 参考：《武汉大学学报(信息科学版)》2017年10期

【摘要】：拉斯曼丘陵地区位于东南极伊丽莎白公主地,中国南极中山站位于拉斯曼丘陵的东部,是中国南极科学考察的重要地区。数字高程模型(DEM)是南极冰盖变化研究的基础,卫星测高数据是南极地区构建DEM的主要数据来源。CryoSat-2是新一代用于极地冰盖和海冰监测的测高卫星,联合2013年和2014年南极冬季的CryoSat-2测高数据以及中国、澳大利亚、印度三个国家现场测量的60余个地面高程数据,利用克里金插值方法建立了拉斯曼丘陵地区200 m分辨率的DEM(简称LA-DEM)。利用未参与插值的地面高程数据对新建立的LA-DEM进行了验证,并与Bamber 1km DEM、ICESat DEM、RAMPv2 DEM以及BEDMAP 2等四种国际上常用的南极DEM进行比较,结果表明LA-DEM的高程精度约为19.7 m,优于其他4种南极DEM。
[Abstract]:The Rathman hilly area is located in the southeast pole Elizabeth princess, the Chinese Antarctic Zhongshan is located in the east of the Rathman hill. It is an important area for the scientific investigation of the Antarctic in China. The digital elevation model (DEM) is the basis of the study of the changes in the Antarctic ice cover. The satellite altimetry data is the main data source of the DEM in the Antarctic region,.CryoSat-2 is a new generation. The altimetry satellite used for polar ice cover and sea ice monitoring, combined with the CryoSat-2 height data of the Antarctic winter in 2013 and 2014, and more than 60 ground elevation data measured in three countries in China, Australia and India, using the Krikin interpolation method to establish the DEM (LA-DEM) of 200 m resolution in the lathman hilly region. Compared with four commonly used Antarctic DEM, such as Bamber 1km DEM, ICESat DEM, RAMPv2 DEM, BEDMAP 2 and other commonly used Antarctic DEM, the ground elevation data of the interpolated ground elevation is compared. The result shows that the LA-DEM elevation accuracy is about 19.7 m, which is superior to the other 4 kinds of Antarctica.
【作者单位】： 武汉大学中国南极测绘研究中心;极地测绘科学国家测绘地理信息局重点实验室;武汉大学测绘遥感信息工程国家重点实验室;
【基金】：国家自然科学基金(41531069,41176173) 国家重大科学研究计划(2012CB957701) 南北极环境综合考察及资源潜力评估项目(CHINARE2016)~~
【分类号】：P208
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本文编号：1916327