本数据集针对西昆仑主峰周围地区,利用遥感影像获取的2016年该地区数字高程模型。数据集包含1个波段,主要通过使用搭载合成孔径雷达传感器的平台,同时观测或两次平行的观测,获取地面同一地物目标的复数数据。经过精确配准后对复数图像进行共轭相乘可得到复干涉纹图。利用飞行平台、波束视及基线之间的几何关系,对复干涉纹图中的相位信息进行解缠获取的冰川区数字高程模型。只针对2016年当年冰川表面高程,故不进行补充和完善,采用完全开放共享。数据集包含DEM2016,共1个波段。数据集文件名及波段名称对应如下:数据集文件名:2016年西昆仑主峰周围地区数字高程模型数据集,DEM2016——2016年该地区数字高程模型(单位:米(m))。
采集时间 | 2016/02/01 - 2016/02/29 |
---|---|
采集地点 | 西昆仑主峰 |
数据量 | 69.7 MiB |
数据格式 | TIFF |
数据空间分辨率(/米) | 30.0m |
坐标系 | WGS84 |
本数据集主要为解译数据,数据主要来源为TerraSAR-X/TanDEM-X微波遥感数据。
通过使用搭载合成孔径雷达传感器的平台,同时观测或两次平行的观测,获取地面同一地物目标的复数数据。经过精确配准后对复数图像进行共轭相乘可得到复干涉纹图。利用飞行平台、波束视及基线之间的几何关系,对复干涉纹图中的相位信息进行解缠获取的冰川区数字高程模型。
通过使用搭载TerraSAR-X和TanDEM-X传感器的平台,同时观测,获取地面同一地物目标的复数数据(包括振幅和相位信息),组成干涉对。经过精确配准后对复数图像进行共轭相乘可得到复干涉纹图。利用飞行平台、波束视及基线之间的几何关系,对复干涉纹图中的相位信息进行解缠,从而得到地面高程信息。其垂直方向的绝对精度优于10 m,相对精度在局部坡度角>20%时达到4 m,<20%时精度达到2 m。
# | 编号 | 名称 | 类型 |
1 | 2013FY111400 | 中国西部主要冰川作用中心冰量变化调查 | 国家科技基础性工作专项 |
# | 标题 | 文件大小 |
---|---|---|
1 | Data.rar | 69.7 MiB |
2 | Document.rar | 14.1 KiB |
# | 时间 | 姓名 | 用途 |
---|---|---|---|
1 | 2021/11/17 00:42 | 梁* |
论文题目:Suface Velocity Analysis of Surge glacier in the West Kunlun Mountains from 2000 to 2018
论文摘要:Glacier surge leads to the rapid movement of ice mass from high to low elevation, which is closely related to glacier hazards such as debris flow and glacier lake outburst flood.
In the West Kunlun Shan, some glacier surge events have been detected. However, the characteristics of the identified surge-type glaciers have not been fully understood due to the lack of long-term observations of glacier change. This study presents a spatial and temporal surface velocity analysis of glaciers in the West Kunlun Mountains, Northwestern Tibet Plateau from 2000 to 2018. Varieties of glacier terminus are observed by glacier length based on Landsat images. Glaciers in the West Kunlun Shan exhibit three distinct spatial velocity patterns. The type-I shows nearly stagnant (< 10 m/yr) in tongues but a maximum velocity of >25 m/yr in the accumulation area. The type-II have active tongues (> 35 m/yr) but a slow movement in the upstream. The type-III shows continuous (< 15 m/yr) movement throughout the central line. Results show that the average surface velocity of studied glaciers was 3.06 ± 2.02 m/yr in 2000, deceased by 25.82% to 2.27 ± 1.27 m/yr in 2015 and further increased by 30.84% to 2.97 ± 1.70 m/yr in 2018. Though a slight decline in average glacier surface velocity is observed, rates of different type glaciers are considerably heterogeneous for the studied glaciers, which is largely determined by glacier size, median area elevation (MAE), orientation and debris cover. Average slope of the glacier has comparatively low effect on average glacier surface velocity. Yet the surge of glacier generally occurs in the zone of high activity crevasses with steep gradients showing maximum ice flow at higher elevation. Climate change also plays an important role that increasing glacier melt water caused by the rising temperature and mass gain due to the increase of precipitation will cause glacier surge.
论文类型:期刊论文
导师姓名:王宁练
|
2 | 2020/04/13 01:18 | 裴*茜 |
论文题目:中巴经济走廊气候变化背景下地貌演化对地质灾害的响应
论文摘要:
论文类型:博士论文
|
©2024 中国科学院西北生态环境资源研究院 备案号:陇ICP备2021001824号-34
兰州市东岗西路320号 730000 电话:0931-4967592, 0931-4967596