南极地表覆盖图（1999-2003）

全南极高分辨率遥感影像镶嵌图利用美国陆地卫星7号于1999-2003年间拍摄的1073幅影像以及覆盖南纬82.5度以南的中分辨率MODIS影像（拍摄于2005年）处理合成得到。基于该镶嵌图，结合南极科研需求，采用计算机自动解译和人工辅助相结合的方法，将南极洲地表覆盖划分为6大类：蓝冰、裂隙、裸岩、水体、冰碛、粒雪。经统计得到上述各类的面积和所占比例分别为：225207.29平方千米（1.651%），7153.36平方千米（0.052%），72958.04平方千米（0.535%），189.43平方千米（0.001%），310.76平方千米（0.003%），13337392.66平方千米（97.758%）。该地图为近似真彩色合成的卫星影像图，各地表覆盖类型采用不同的色块表示。该图主要为极地各学科科学研究、地理教育及科普等提供参考。

This full-Antarctic high-resolution remote sensing image mosaic was synthesized using 1,073 images captured by the U.S. Landsat 7 satellite between 1999 and 2003, as well as medium-resolution MODIS images acquired in 2005 that cover regions south of 82.5°S. Aligned with the scientific research needs of the Antarctic region, a hybrid approach combining automated computer interpretation and manual assistance was applied to classify Antarctic land cover into six major categories: blue ice, crevasses, bare rock, water bodies, moraine, and firn. Statistical analysis yields the area and proportion of each category as follows: 225,207.29 square kilometers (1.651%), 7,153.36 square kilometers (0.052%), 72,958.04 square kilometers (0.535%), 189.43 square kilometers (0.001%), 310.76 square kilometers (0.003%), and 13,337,392.66 square kilometers (97.758%). This approximately true-color composite satellite mosaic uses distinct color patches to represent each land cover type, and it primarily serves as a reference for scientific research across various polar disciplines, geographic education, and science popularization efforts.

搜集汇总

背景与挑战

背景概述

该数据集基于1999-2003年美国陆地卫星7号和2005年MODIS影像合成，将南极地表划分为蓝冰、裂隙、裸岩、水体、冰碛、粒雪6大类，并统计了各类面积及比例。数据集主要用于极地科学研究、地理教育及科普参考。