[2019-11-15] Sediment Area Drone Orthomosaic, Digital Surface Model, and Processing Report

This is the drone orthomosaic, digital surface model (DSM), and PhotoScan-generated report for the November 15, 2019 sampling date for the Evans et al. Sawyer Mill dam removal study. This data is for the sediment 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 used to collect the survey data. 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. Please note that the report is titled "PS T" since the drone products were also used in Chapter II of her dissertation.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.本数据集涵盖2019年11月15日采样日期对应的Evans等人开展的Sawyer Mill大坝拆除研究的无人机正射影像（orthomosaic）、数字表面模型（digital surface model, DSM）以及Agisoft PhotoScan生成的研究报告。该数据采集自美国新罕布什尔州多佛市贝拉米河（Bellamy River）的沉积物研究区域。本次航空影像采集使用大疆精灵3专业版（DJI Phantom 3 Professional）小型无人机系统，影像后处理工作在Agisoft PhotoScan Professional软件中完成。地面测量数据通过拓普康Hiper Lite+（Topcon Hiper Lite+）接收机采集获取。所有成果的平面坐标系采用WGS 84，垂直基准面为NAVD88，单位为米。如需了解该无人机衍生产品的更多细节，请参阅Alexandra的博士学位论文（新罕布什尔大学，2021年）。需注意，由于该无人机成果同时被用于其论文的第二章，因此本报告标题标注为"PS T"。本材料基于美国国家科学基金会（National Science Foundation, NSF）EPSCoR资助项目"RII Track-2 FEC：强化大坝决策科学基础——针对生态、社会与经济权衡的多尺度耦合系统研究"（又名"大坝的未来（Future of Dams）"）的相关资源制作完成。本项目由美国国家科学基金会研究基础设施改进计划资助，项目编号为NSF #IIA-1539071。本材料中表达的任何观点、研究发现、结论或建议仅代表作者本人，并不一定反映美国国家科学基金会的官方立场。