Airborne Surface Profiling of Alaskan Glaciers, 1994 - 2001, Version 1

This data set consists of glacier outline, laser altimetry profile, and surface elevation change data for 46 glaciers in Alaska and British Columbia, Canada, measured with an airborne laser altimetry system. Six glaciers in the Alaska Range of central Alaska, two glaciers in the Wrangell Mountains of southcentral Alaska, 11 glaciers in the Chugach Mountains of southcentral Alaska, five glaciers in the Chigmit Mountains of southcentral Alaska, 13 glaciers in the Kenai Mountains of southcentral Alaska (comprising the Harding Icefield), one glacier in the St. Elias Mountains of southeast Alaska, one glacier in the Takhinsha Mountains of southeast Alaska, and seven glaciers in the Coast Mountains of southeast Alaska and British Columbia were profiled between 1994 and 2001. Surface elevation profiles are accurate to about 0.3 m. Long-term elevation changes can be estimated by comparison of these profiles with existing maps.

本数据集涵盖了阿拉斯加与加拿大不列颠哥伦比亚省境内46条冰川的冰川轮廓、激光测高剖面以及表面高程变化数据，相关数据通过机载激光测高系统采集获取。其中，阿拉斯加中部阿拉斯加山脉区域有6条冰川，阿拉斯加中南部兰格尔山脉有2条冰川、楚加奇山脉11条、奇格米特山脉5条、基奈山脉13条（含哈丁冰原）；阿拉斯加东南部圣伊莱亚斯山脉、塔钦沙山脉各1条冰川，以及阿拉斯加东南部与不列颠哥伦比亚省沿岸山脉的7条冰川，上述冰川的测高剖面测量工作均在1994年至2001年间完成。表面高程剖面的测量精度约为0.3米。通过将这些剖面与现有地图进行比对，可估算得到长期的冰川高程变化情况。