[2020-4-15] Tidal Area Drone Orthomosaic, Digital Surface Model, and Processing Report

This is the drone orthomosaic, digital surface model (DSM), and PhotoScan-generated report for the April 15, 2020 sampling date for the Evans et al. Sawyer Mill dam removal study. This data is for the tidal 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 total station was 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.

本数据集对应埃文斯（Evans）等人开展的索耶米尔（Sawyer Mill）大坝拆除研究中2020年4月15日采样日期所生成的无人机正射影像、数字表面模型（DSM）以及Agisoft PhotoScan生成的报告。本数据集覆盖美国新罕布什尔州多佛市贝拉米河的潮汐研究区域。
采集航拍影像所用的设备为大疆（DJI）精灵3专业版小型无人机系统，所有航拍影像均在Agisoft PhotoScan专业版软件中完成后期处理。地形测量数据采集使用了拓普康（Topcon）全站仪。
本数据集的XY坐标系采用WGS 84，垂直基准面为以米为单位的NAVD88。如需了解无人机衍生产品的更多细节，请参阅亚历山德拉（Alexandra）于2021年提交的新罕布什尔大学学位论文。

本数据集依托美国国家科学基金会（NSF）EPSCoR资助项目“RII Track-2 FEC：强化大坝决策科学基础：面向生态、社会与经济权衡的多尺度耦合系统研究”（又名“大坝的未来”）相关资源制作。本项目由美国国家科学基金会研究基础设施改进项目（NSF #IIA-1539071）提供资助。需注意的是，本材料中阐述的任何观点、发现、结论及建议均仅代表作者本人，不一定代表美国国家科学基金会的官方立场。