Suspended-sediment, bed-sediment, and in-channel topographical data at the Green River at Mineral Bottom near Canyonlands National Park, and Colorado River at Potash, UT stream gages

Sediment Data: These data include (1) physical suspended-sediment sample data including suspended silt and clay concentration, suspended-sand concentration, and suspended-sand grain size distribution, (2) bed-sediment sample data with complete grain size analyses, and (3) 15-minute acoustical sediment data measured using a multifrequency array (1MHz and 2MHz) of sidelooking acoustic Doppler profilers which includes suspended silt-and-clay concentration, suspended-sand concentration, and the median grain size of suspended sand, instantaneous silt and clay, and sand loads, and cumulative silt and clay, and sand loads. The acoustic sediment data were calibrated with the physical suspended-sediment samples. These data were collected by the USGS Grand Canyon Monitoring and Research Center, and the USGS Utah Water Science Center and include samples collected between 3/26/2014 and 12/31/2018. Physical suspended-sediment samples and bed-sediment samples were collected using samplers lowered from a boat-mounted crane. Data were collected at Colorado River at Potash (CR_POT) and Green River at Mineral Bottom near Canyonlands National Park, UT (GR_MB). Bedform Surveys Data: These data include survey data of the channel bed collected using single- and multi-beam sonar collected from a boat, and stationary downward looking pole-mounted sonar transducers. These data were collected at both the Green River at Mineral Bottom near Canyonlands National Park, UT (GR-MB, station #09328920) and Colorado River at Potash (CR-POT, station #09185600) gaging stations. Channel-bed surveys were collected to calculate bedload transport rates using bedform tracking techniques. Single- and multi-beam sonar data consist of text files of survey coordinates projected using the NAD83 (2011) reference datum within UTM zone 12N. Elevations are orthometric heights (NAVD88) computed using geoid 12B. Stationary pole-mounted survey data include the range and amplitude of each transducer pulse.

沉积物数据集：本数据集包含三类数据：(1) 物理悬浮沉积物采样数据，涵盖悬浮粉砂与黏土浓度、悬浮砂浓度以及悬浮砂粒度分布；(2) 完成完整粒度分析的河床沉积物采样数据；(3) 采用侧视声学多普勒剖面仪（sidelooking acoustic Doppler profilers）的多频阵列（1MHz与2MHz）采集的15分钟间隔声学沉积物数据，该类数据包含悬浮粉砂与黏土浓度、悬浮砂浓度、悬浮砂中值粒径、瞬时粉砂黏土载荷与砂载荷，以及累积粉砂黏土载荷与累积砂载荷。声学沉积物数据已通过物理悬浮沉积物采样数据完成校准。本数据集由美国地质调查局（USGS）大峡谷监测与研究中心以及美国地质调查局犹他州水科学中心采集，采样时段为2014年3月26日至2018年12月31日。物理悬浮沉积物与河床沉积物样本通过安装于船载起重机的采样器采集。数据采集点位为犹他州峡谷地国家公园附近波塔什科罗拉多河站点（Colorado River at Potash，CR_POT）与矿物底部格林河站点（Green River at Mineral Bottom near Canyonlands National Park, UT，GR_MB）。
床形测量数据集：本数据集包含两类河道床面测量数据：其一为采用船载单波束与多波束声呐采集的河道床面测量数据，其二为固定式下视杆装声呐换能器采集的测量数据。数据采集点位为犹他州峡谷地国家公园附近矿物底部格林河水文站（Green River at Mineral Bottom near Canyonlands National Park, UT，GR-MB，站号#09328920）与波塔什科罗拉多河水文站（Colorado River at Potash，CR-POT，站号#09185600）。本次河道床面测量旨在通过床形追踪技术计算推移质输沙率。单波束与多波束声呐数据为采用UTM 12N带内NAD83（2011）参考基准投影的测量坐标文本文件。高程为采用大地水准面12B（geoid 12B）计算的正高（NAVD88）。固定式杆装测量数据包含每个声呐换能器脉冲的测距值与振幅值。