2014-2015 lidar survey of the McMurdo Dry Valleys, Antarctica

Airborne lidar data were collected with the Optech Titan multispectral sensor of the McMurdo Dry Valleys, Antarctica during the austral summer of 2014-2015 as part of an effort to understand geomorphic changes over the past decade. Lidar point density varied from 2 to >10 returns per m² with an average of about 5 returns per m². Vertical and horizontal accuracies are estimated to be 0.07 m and 0.03 m, respectively. The lidar coverage comprises roughly 3600 km² with includes the bottoms and sides of Taylor, Pearse, Wright, Victoria, Mckelvey, Barwick, and Valham valleys, Bull Pass, in addition to other ad hoc regions nearby including the Pegasus flight facility and two regions on Ross Island, McMurdo Station/Scott Base (and surroundings), and the coastal margin between Cape Royds and Cape Evans.<br><br>A detailed description of the survey can be found in the Earth System Science Data publication <a href="https://doi.org/10.5194/essd-9-435-2017">High-resolution elevation mapping of the McMurdo Dry Valleys, Antarctica, and surrounding regions</a> (Fountain et al., 2017).<p><br>Publications associated with this dataset can be found at <a href="http://calm.geo.berkeley.edu/ncalm/dtc.html" target="_blank">NCALM's Data Tracking Center</a></p>

2014-2015年南半球夏季，在南极洲麦克默多干谷地区，利用Optech Titan多光谱传感器采集了机载激光雷达数据，旨在探究过去十年间的地貌变化。激光雷达点密度介于每平方米2至超过10次回波之间，平均约为每平方米5次回波。垂直和水平精度分别估计为0.07米和0.03米。激光雷达覆盖范围约为3600平方公里，包括泰勒谷、皮尔塞谷、赖特谷、维多利亚谷、麦凯维谷、巴里克谷和瓦尔哈姆谷的底部和侧面，以及博尔山口，以及其他临时区域，包括佩加索斯飞行设施和罗斯岛上的两个区域、麦克默多站/斯科特基地（及其周边）以及罗伊兹角和伊文斯角之间的海岸边缘。该调查的详细描述可参考地球系统科学数据出版物《南极洲麦克默多干谷及其周边地区的高分辨率高程测绘》（Fountain等，2017年）。相关出版物可查阅NCALM数据追踪中心（http://calm.geo.berkeley.edu/ncalm/dtc.html）。