Multispectral aerial imagery from unmanned aerial systems (UAS) flights and image locations: Plum Island Estuary and Parker River NWR (PIEPR), February 27th, 2018

Low-altitude (80 and 100 meters above ground level) digital images were taken over an area of the Plum Island Estuary and Parker River National Wildlife Refuge (NWR)...低空（距地面80米与100米高度）数码图像拍摄于普拉姆岛河口及帕克河国家野生动物保护区（National Wildlife Refuge，简称NWR）区域上空。