Geomorphic data for the Green River in Canyonlands, Utah, USA (ver. 1.0, June 2020)

These data consist of rectified aerial photographs, measurements of active channel width, measurements of river and floodplain bathymetry and topography, and ancillary data. These data are specific to the corridor of the Green River in Canyonlands National Park between Horseshoe Canyon and Deadhorse Canyon, Utah. The time period for these data are 1940 to 2018. The 'Channel Width' shapefile data are measurements of the active channel width of the Green River at 1-km intervals in and near Canyonlands National Park, Utah. The 'Mineral Bottom' csv data are river channel cross-sections for a 3-km study reach of the Green River upstream from Mineral Bottom, Utah. The study reach is near the mouth of Hell Roaring Canyon, 5 km upstream from the Mineral Bottom boat ramp, which is 85 km upstream from the confluence of the Green River with the Colorado River. Six cross-sections were originally established by the U.S. Fish and Wildlife Service in June 1995. Additional cross-sections were added by Utah State University in August 1995. A subset of the cross-sections (where original monuments were found) were re-surveyed by the U.S. Geological Survey Grand Canyon Monitoring and Research Center in cooperation with Utah State University in June 2015. The raster data are aerial images and digital elevation models (DEMs) for segments of the Green River in and near Canyonlands National Park, Utah. The aerial images depict the river channel and adjacent floodplains for most of the corridor of the Green River in Canyonlands National Park. The images were acquired from public sources and orthorectified and mosaiced for this study. The DEMs cover the river channel and adjacent floodplain for the Fort Bottom segment of the Green River within Canyonlands National Park and include both bathymetric and topographic data. The bathymetric data were collected by the U.S. Geological Survey Grand Canyon Monitoring and Research Center with funding provided by the National Park Service. The topographic data are airborne lidar data that were collected for the state of Utah by a contractor. The lidar data are available at https://doi.org/10.5069/G9RV0KSQ.

本数据集包含经过正射校正的航空影像、活动河道宽度测量数据、河流与河漫滩水深及地形测量数据，以及辅助数据。本次数据集聚焦于美国犹他州峡谷地国家公园（Canyonlands National Park）内马蹄峡谷（Horseshoe Canyon）与死马峡谷（Deadhorse Canyon）之间的格林河（Green River）廊道区域，涵盖的时间跨度为1940年至2018年。“河道宽度（Channel Width）”形状文件（shapefile）数据为美国犹他州峡谷地国家公园及其周边区域内，格林河以1千米为间隔的活动河道宽度测量结果。“Mineral Bottom”逗号分隔值（Comma-Separated Values，CSV）数据为美国犹他州Mineral Bottom上游3千米研究河段的格林河河道断面测量数据。该研究河段紧邻地狱咆哮峡谷（Hell Roaring Canyon）河口，距离Mineral Bottom船用坡道上游5千米，而该船用坡道位于格林河与科罗拉多河（Colorado River）汇流点上游85千米处。1995年6月，美国鱼类及野生动物管理局（U.S. Fish and Wildlife Service）最初设置了6处河道断面；1995年8月，犹他州立大学（Utah State University）新增了若干河道断面。2015年6月，美国地质调查局大峡谷监测与研究中心（U.S. Geological Survey Grand Canyon Monitoring and Research Center）与犹他州立大学合作，对其中可找到原始基准标石的河道断面子集进行了复测。栅格数据为美国犹他州峡谷地国家公园及其周边区域内格林河部分河段的航空影像与数字高程模型（Digital Elevation Model, DEM）。该航空影像覆盖了峡谷地国家公园内格林河廊道的绝大部分区域，展现了河道与毗邻河漫滩的样貌；本次研究所用的航空影像均源自公开数据源，并经过正射校正与镶嵌处理。这些数字高程模型覆盖了峡谷地国家公园内格林河福特底部（Fort Bottom）河段的河道与毗邻河漫滩，包含水深与地形两类测量数据。其中水深测量数据由美国地质调查局大峡谷监测与研究中心采集，资助方为美国国家公园管理局（National Park Service）；地形数据为犹他州委托承包商采集的机载激光雷达（airborne LiDAR）数据。该激光雷达数据可通过以下链接获取：https://doi.org/10.5069/G9RV0KSQ。