{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "David Warner", "hasEmail": "mailto:dmwarner@usgs.gov"}, "description": "Each line in the file \u201cLake Michigan fish acoustic data from 2011 to 2016.csv\u201d represents the acoustic data and estimated fish density for a single depth layer of water. Surveys are conducted along transects, transects are divided horizontally into successive intervals, and then within an interval there are multiple successive depth layers.  Area backscattering (ABC), mean acoustic size (sigma), and fish density are reported for each unique transect-interval \u2013 layer from Lake Michigan in the years 2011-2016.  Area backscattering (PRC_ABC), mean acoustic size (sigma), and fish density in the intervals and layers of acoustic survey transects of Lake Michigan in the years 2011-2016.  The survey is carried out using a stratified, systematic design with transect locations randomized within each stratum.  As a result, transect location varies each year.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "http://doi.org/10.5066/F79P2ZSZ", "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.57ed22cfe4b090825011d3f5.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_57ed22cfe4b090825011d3f5", "keyword": ["Fish", "Fishery Resources", "USGS:57ed22cfe4b090825011d3f5", "environment", "hydroacoustic", "inlandWaters"], "modified": "2021-06-08T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-85.1463, 41.66568, -87.86164, 45.88633", "theme": ["geospatial"], "title": "Lake Michigan Fish Acoustic Data from 2011 to 2016"}