[2019-11-17] Middle and Lower Impoundments Drone Orthomosaic, Digital Surface Model, and Processing Report

This is the drone orthomosaic, digital surface model (DSM), and PhotoScan-generated report for the November 17, 2019 sampling date for the Evans et al. Sawyer Mill dam removal study. This data is for the middle and lower impoundment study area on the Bellamy River in Dover, NH, USA. A DJI Phantom 3 Professional small unmanned aerial system was used to collect the aerial imagery. The imagery was processed in Agisoft PhotoScan Professional. A Topcon Hiper Lite+ was mainly used to collect the survey data. <br>The products' XY is in WGS 84, and the vertical datum corresponds to NAVD88 in meters. Please see Alexandra's dissertation (University of New Hampshire, 2021) for additional information on the drone products.<br><br>These materials were made using resources from an NSF EPSCoR funded project “RII Track-2 FEC: Strengthening the scientific basis for decision-making about dams: Multi-scale, coupled-systems research on ecological, social, and economic trade-offs” (a.k.a. "Future of Dams"). Support for this project is provided by the National Science Foundation’s Research Infrastructure Improvement NSF #IIA-1539071. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.本数据集为埃文斯等人（Evans et al.）开展的索耶米尔大坝拆除研究2019年11月17日采样任务的相关成果，包含无人机正射影像镶嵌图（orthomosaic）、数字表面模型（DSM）以及由Agisoft PhotoScan生成的研究报告。该数据覆盖美国新罕布什尔州多佛市贝拉米河中下游库区研究区域。本研究采用大疆精灵3专业版小型无人机系统采集航空影像，影像处理工作在Agisoft PhotoScan专业版中完成，测量数据主要通过拓普康Hiper Lite+采集。<br>本数据集的XY坐标系采用WGS 84世界大地测量系统，垂直基准面为北美垂直基准1988（NAVD88），单位为米。如需了解无人机相关产品的更多细节，请参阅亚历山德拉的学位论文（新罕布什尔大学，2021年）。<br><br>本数据集所用资源源自美国国家科学基金会（NSF）科学促进区域合作计划（EPSCoR）资助的项目"RII Track-2 FEC：强化大坝决策科学基础——生态、社会与经济权衡的多尺度耦合系统研究"（又名"大坝的未来"）。本项目由美国国家科学基金会研究基础设施改进项目（资助编号：NSF #IIA-1539071）提供支持。本材料中所表达的任何观点、发现、结论或建议均为作者本人所有，不一定代表美国国家科学基金会的官方立场。