南极冰盖DEM机载测高验证与分析——以西南极Thwaites冰川为例

doi:10.11947/j.AGCS.2016.20150290

测绘学报 ›› 2016, Vol. 45 ›› Issue (5): 544-551.doi: 10.11947/j.AGCS.2016.20150290

南极冰盖DEM机载测高验证与分析——以西南极Thwaites冰川为例

黄科伟^1,2, 李斐^1,2,3, 张胜凯^1,2, 郝卫峰^1,2, 肖峰^1,2, 袁乐先^1,2

1. 武汉大学中国南极测绘研究中心, 湖北武汉 430079;
2. 极地测绘科学国家测绘地理信息局重点实验室, 湖北武汉 430079;
3. 国家领土主权与海洋权益协同创新中心, 湖北武汉 430079

收稿日期:2015-06-01 修回日期:2016-03-01 出版日期:2016-05-20 发布日期:2016-05-30
通讯作者: 李斐 E-mail:fli@whu.edu.cn
作者简介:黄科伟(1991-),男,硕士,研究方向为机载测高。E-mail: kwhuang@whu.edu.cn
基金资助:
国家自然科学基金重点项目(41531069);国家重大科学研究计划(2012CB957701;2013CBA01804);国家自然科学基金(41176173);南北极环境综合考察及资源潜力评估项目(CHINARE2016)

Validation and Analysis of the Antarctic Digital Elevation Models Based on Airborne Altimetry——A Case Study of Thwaites Glacier, West Antarctica

HUANG Kewei^1,2, LI Fei^1,2,3, ZHANG Shengkai^1,2, HAO Weifeng^1,2, XIAO Feng^1,2, YUAN Lexian^1,2

1. Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China;
2. Key Laboratory of Polar Surveying and Mapping, National Administration of Surveying, Mapping and Geoinformation of China, Wuhan 430079, China;
3. Collaborative Innovation Center for Territorial Sovereignty and Maritime Rights, Wuhan 430079, ChinaAbstract

Received:2015-06-01 Revised:2016-03-01 Online:2016-05-20 Published:2016-05-30
Supported by:
The National Natural Science Foundation of China (No. 41531069);The National Basic Research and Development Program (973) (Nos.2012CB957701;2013CBA01804);The National Natural Science Foundation of China (No.41176173);The Chinese Polar Environment Comprehensive Investigation & Assessment Programs (No. CHINARE2016)

摘要/Abstract

摘要： 利用冰桥计划(IceBridge)在西南极Thwaites冰川的机载激光测高数据,对ICESat卫星测高数据和目前国际常用的4种南极DEM,包括Bamber 1 km DEM、ICESat DEM、RAMPv2 DEM和JLB97 DEM的精度进行了验证和分析。结果表明,ICESat卫星测高数据和ICESat DEM有着较高的高程可靠性,其与冰桥计划机载测高数据的平均高程差小于5 m,标准差小于15 m。Bamber 1 km DEM高程可靠性相比ICESat卫星测高数据和ICESat DEM低一些。JLB97 DEM、RAMPv2 DEM与冰桥计划机载测高数据之间的标准差超过30 m,尤其在坡度较大的区域,高程可靠性低。

关键词: 南极, Thwaites冰川, 冰桥计划, 机载测高, 数字高程模型

Abstract: Based on the IceBridge airborne altimetry data collected over Thwaites Glacier, West Antarctica, the accuracy of ICESat satellite altimetry data and four widely used DEMs of Antarctica, i.e., JLB97 DEM,RAMPv2 DEM,ICESat DEM and Bamber 1 km DEM were validated and analyzed. The results show that both of ICESat satellite altimetry data and ICESat DEM feature high reliability, with a bias less than 5 m and a standard deviation less than 15 m. The reliability of Bamber 1 km DEM is a bit lower than that of ICESat satellite altimetry data and ICESat DEM. The standard deviations of JLB97 DEM and RAMPv2 DEM comparing with IceBridge airborne altimetry data are larger than 30 m, and the reliabilities for JLB97 DEM and RAMPv2 DEM are low especially in the sloped areas.

Key words: Antarctica, Thwaites glacier, IceBridge Mission, airborne altimetry, DEM

中图分类号:

P224

黄科伟, 李斐, 张胜凯, 郝卫峰, 肖峰, 袁乐先. 南极冰盖DEM机载测高验证与分析——以西南极Thwaites冰川为例[J]. 测绘学报, 2016, 45(5): 544-551.

HUANG Kewei, LI Fei, ZHANG Shengkai, HAO Weifeng, XIAO Feng, YUAN Lexian. Validation and Analysis of the Antarctic Digital Elevation Models Based on Airborne Altimetry——A Case Study of Thwaites Glacier, West Antarctica[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(5): 544-551.

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南极冰盖DEM机载测高验证与分析——以西南极Thwaites冰川为例

Validation and Analysis of the Antarctic Digital Elevation Models Based on Airborne Altimetry——A Case Study of Thwaites Glacier, West Antarctica

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