AquaticsNearshore_img__SanJuanIs_2022

This aerial imagery mosaic dataset was collected on behalf of the Washington State Department of Natural Resources (WA DNR) during the summer of 2022 in order to map the extent of floating kelp canopies in Washington State. Areas covered include the northern outer coast of Washington, the US portion of the Strait of Juan de Fuca, North Puget Sound, the San Juan Islands, Saratoga Passage & Whidbey Island Basin, WA DNR managed aquatic reserves (Cherry Point AR, Cypress Island AR, and Smith & Minor Islands AR), Admiralty Inlet, Tacoma Narrows, and Squaxin Island. Aerial surveys were conducted during low-tide, slack-current conditions identified by WA DNR for kelp forest monitoring, with some exceptions. This imagery has four bands (Band_1=red, Band_2=green, Band_3=blue, and Band_4=near-infrared) and was collected at 6-inch resolution. Floating kelp is readily visualized using an NGB band combination (near-infrared, green, blue), but can also be seen in some places with standard RGB imagery (red, green, blue). Imagery from this project are distributed as compressed (lossy) MrSID files for accessibility and ease of visualization, and are not suitable for image classification and analysis. These mosaics are a subset of the imagery products generated by this project, please contact the WA DNR Nearshore Habitat Program about other products that are available. These data support WA DNR's statewide long-term monitoring goals by providing high-resolution and large-area visualization of floating kelp canopies. For more information and inquiries about products available at specific locations, contact Danielle Claar, WA DNR, Nearshore Habitat Program at: [e-mail] or [e-mail].本航空影像镶嵌数据集由华盛顿州自然资源部（Washington State Department of Natural Resources，WA DNR）委托采集于2022年夏季，旨在绘制华盛顿州境内漂浮海带冠层的分布范围。覆盖区域包括华盛顿州北部外海岸、胡安·德富卡海峡美国管辖水域、普吉特湾北部、圣胡安群岛、萨拉托加水道与惠德贝岛盆地、WA DNR管理的水生保护区（切里角水生保护区、赛普拉斯岛水生保护区以及史密斯与米诺群岛水生保护区）、阿德默勒尔蒂湾、塔科马海峡以及斯夸克斯岛。本次航空调查在WA DNR指定的用于海带林监测的低潮、缓流时段开展，仅存在少量例外情况。该影像包含4个波段：波段1为红光波段、波段2为绿光波段、波段3为蓝光波段、波段4为近红外波段，采集分辨率为6英寸。漂浮海带可通过NGB波段组合（近红外、绿光、蓝光）清晰识别，部分区域也可通过标准RGB影像（红光、绿光、蓝光）观测到。本项目产出的影像以有损压缩的MrSID文件格式分发，以提升可访问性与可视化便捷性，但此类文件不适用于图像分类与分析任务。本次分发的镶嵌影像是本项目产出影像产品的子集，如需获取其他可用产品，请联系WA DNR近岸栖息地项目。本数据集通过提供高分辨率、大范围的漂浮海带冠层可视化成果，助力WA DNR的全州长期监测工作目标。如需获取特定区域的相关产品信息或咨询，请联系华盛顿州自然资源部近岸栖息地项目的Danielle Claar，联系方式：[e-mail] 或 [e-mail]。