{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Daniel Livsey", "hasEmail": "mailto:dlivsey@usgs.gov"}, "description": "Measurements of suspended sediment concentration, water velocity, suspended-sediment particle size, and suspended-sediment particle settling velocity were collected to estimate suspended-sediment flux and investigate sediment transport processes at Dumbarton Bridge in San Francisco Bay (NWIS station 373015122071000) from calendar year 2018 to 2019. \nData were collected using: stationary and boat-mounted acoustic Doppler current meters (ADCP, a 1 MHz Nortek Aquadopp and a 1200kHz Teledyne RiverPro, respectively), four stationary and one profiling multiparameter water quality profiling sondes (YSI 6920), a stationary acoustic backscattering sensor (ABS, Sequoia LISST-ABS), a stationary laser diffraction particle size analyzer (Sequoia LISST100x), and a settling chamber with an integrated video camera used to measure in-situ particle size and settling rates (see Manning and Dyer, 2002). All data from the boat-mounted ADCP is provided in \"Boat_mounted_ADCP_data.zip\". All data from the LISST100x is provided in \"LISST100x.zip\". Data from the remaining instrumentation is provided in seperate .csv files. \nData collection occurred at two primary locations. At a pier of Dumbarton Bridge at 37.5056361, -122.1188833 (all coordinates herein are provided in WGS84) collocated with NWIS station 373015122071000 and at nearby cross-channel transect defined between 37.4986167, -122.1181833 (River Left) to 37.5029500, -122.1117167 (River Right). \nAll stationary instrumentation was mounted to two locations on a pier of Dumbarton Bridge. Mobile instrumentation, the boat-mounted ADCP and profiling multiparameter water quality sondes, were utilized to measure water velocity and estimate suspended-sediment concentration profiles at the cross-channel transect and at the bridge pier. Latitude, longitude, and depth from water surface for each sample collected by the mobile instrumentation is provided in the data files. \nCross-section averaged estimates of suspended-sediment flux were computed using the methods of Livsey and others (2020) and references therein. \nReferences\nLivsey, D.N., Downing-Kunz, M.A., Schoellhamer, D.H. and Manning, A.J., Suspended Sediment Flux in the San Francisco Estuary: Part I\u2014Changes in the Vertical Distribution of Suspended Sediment and Bias in Estuarine Sediment Flux Measurements. Estuaries and Coasts, pp.1-17. https://doi.org/10.1007/s12237-020-00734-z \nManning, A.J. and Dyer, K.R., 2007. Mass settling flux of fine sediments in Northern European estuaries: measurements and predictions. Marine Geology, 245, 107-122, doi:10.1016/j.margeo.2007.07.005.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9BVCW1N", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.5de983d5e4b02caea0eed9e3.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5de983d5e4b02caea0eed9e3", "keyword": ["Don Edwards San Francisco Bay National Wildlife Refuge", "Dumbarton Bridge", "Dumbarton Point", "San Francisco Bay", "USGS:5de983d5e4b02caea0eed9e3", "environment", "estuarine processes", "inlandWaters", "oceans", "sediment transport", "surface water quality"], "modified": "2020-08-12T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-122.119732, 37.498080, -122.109776, 37.509113", "theme": ["geospatial"], "title": "Sediment Concentration, Water Velocity, and Suspended Particle Size and Settling Data to Estimate Estuarine Sediment Flux at Dumbarton Bridge, San Francisco Bay, CA from 2018 - 2019"}