SGER: Using Photogrammetry to Assess 50 Years of Change in Arctic Vegetation: A Feasibility Study

该项目将在阿拉斯加北方的一些地点收集低空航空照片，这些照片是在1948年和1949年拍摄的。 这些新照片将被检查，以寻找植被和景观发生十年变化的证据，这些变化可能是为了应对过去二十年来阿拉斯加北极地区发生的重大气候变暖。 比较的目的是：1）确定是否发生了生态变化，2）是否可以使用倾斜航空摄影来检测变化。 这项可行性研究的结果可能是有用的，可以应用于一组广泛分布的航空照片50年前在阿拉斯加北极斜坡的大部分地区的技术演示。

This project will collect low altitude aerial photographs at sites in northern Alaska where photographs were previously taken in 1948 and 1949. The new photographs will be examined for evidence of decadal changes in vegetation and landscape that may have occurred in response to a significant climatic warming that has taken place in the Alaskan Arctic over the past two decades. The purpose of the comparison is: 1) to determine if ecological change has occurred and 2) if oblique aerial photography can be used to detect the changes. The results of this feasibility study could be useful as demonstration of a technique that could be applied to a widely distributed set of aerial photographs taken fifty years ago over much of the Arctic Slope in Alaska.