{
    "tag": 6362,
    "title": "High-resolution acoustic backscatter data collected southwest of Chenega Island, Alaska during field activity 2014-622-FA",
    "pubdate": "2019",
    "sername": null,
    "series_name": null,
    "issue": "DOI:10.5066\/P9K1YQ35",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/pcmsc\/DataReleases\/ScienceBase\/DR_P9K1YQ35\/2014-622-FA_Chenega_UTM6N_10m_Backscatter_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "High-resolution acoustic backscatter data were collected by the U.S. Geological Survey (USGS) and the Alaska Department of Fish and Game in May of 2014 southwest of Chenega Island, Alaska. Data were collected aboard the Alaska Department of Fish and Game vessel, R\/V Solstice, during USGS field activity 2014-622-FA, using a pole mounted 100-kHz Reson 7111 multibeam echosounder.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Balster-Gee, Alicia F.",
            "role": "Author"
        },
        {
            "name": "Brothers, Daniel S.",
            "role": "Author"
        },
        {
            "name": "Finlayson, David P.",
            "role": "Author"
        },
        {
            "name": "Liberty, Lee",
            "role": "Author"
        },
        {
            "name": "Dartnell, Peter",
            "role": "Author"
        },
        {
            "name": "Hatcher, Gerald A.",
            "role": "Author"
        },
        {
            "name": "Haeussler, Peter J.",
            "role": "Author"
        },
        {
            "name": "Byerly, Mike",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "474",
            "name": "geospatial datasets",
            "scope": "Collections of related digital information that are geographically referenced."
        },
        {
            "thcode": 2,
            "code": "707",
            "name": "marine geophysics",
            "scope": "Branch of earth sciences concerned with the physical processes of the oceans and continental margins.  We include here studies of large bodies of brackish and fresh water, such as lakes and rivers."
        },
        {
            "thcode": 2,
            "code": "2036",
            "name": "multibeam sonar",
            "scope": "Acoustic technique for determining depths or creating backscatter imagery in a wide swath of seafloor or lakebed centered below the instrument platform."
        },
        {
            "thcode": 2,
            "code": "2053",
            "name": "sea-floor acoustic reflectivity",
            "scope": "Acoustic energy received by a sonar system, providing a measure of the roughness of the sea floor."
        },
        {
            "thcode": 2,
            "code": "1025",
            "name": "sea-floor characteristics",
            "scope": "Geomorphic features and geographic, compositional, and textural variation in the materials composing the ocean floor. Includes both large-scale structures (such as seamounts and rises) and fine-scale variations in rocks and deposits on the sea floor."
        },
        {
            "thcode": 15,
            "code": "008",
            "name": "geoscientificInformation",
            "scope": "Information pertaining to earth sciences, for example geophysical features and processes, geology, minerals, sciences dealing with the composition, structure and origin of the earth's rocks, risks of earthquakes, volcanic activity, landslides, gravity information, soils, permafrost, hydrogeology, groundwater, erosion"
        },
        {
            "thcode": 15,
            "code": "010",
            "name": "imageryBaseMapsEarthCover",
            "scope": "Base maps, for example land\/earth cover, topographic maps, imagery, unclassified images, annotations, digital ortho imagery"
        },
        {
            "thcode": 23,
            "code": "3",
            "name": "Distributions",
            "scope": "Locations or patterns of a feature of interest across space and (or) time. These data can include point data, lines, polygons, and temporal data at any scale relevant to CMSP and can be produced by observation, interpolation, or modeling. Distributions can also include maps or statistics of climatology, the environmental values that are expected to be observed at the present time."
        },
        {
            "thcode": 23,
            "code": "23",
            "name": "Substrate",
            "scope": "Represents the character and composition of the surface and near surface of the sea floor in subtidal or intertidal areas, as defined in the Substrate Component of CMECS or in similar classification systems. Distributions are records of substrate characteristics based on visual or photographic inspection or on analysis of samples and cores, and they also include interpretive maps classifying areas on the basis of combinations of observations, hydrodynamic models, or geological models. Assessments include evaluations of present ecological or economic values of substrate distributions, drivers of substrate change, and functions of substrates. Predictions are the results of models or projections of future substrate distributions, values, or ecological impacts, including predicted substrate changes due to natural and human forces including erosion, accretion, sea-level change, extraction, trawling, or other factors; and they are the results of scenario-based models of substrate changes on ecological or economic values under different management strategies or other human alterations."
        },
        {
            "thcode": 61,
            "code": "401",
            "name": "acoustic methods",
            "scope": " measurement of sound propagation in a given medium (such as water) for ranging or acoustical studies."
        },
        {
            "thcode": 61,
            "code": "734",
            "name": "geophysics",
            "scope": "physics applied to the study of the Earth."
        },
        {
            "thcode": 61,
            "code": "427",
            "name": "mapping",
            "scope": "in addition to traditional cartographic methods, this term is used for all field activities that document spatial relationships of scientific interest."
        },
        {
            "thcode": 61,
            "code": "173",
            "name": "seabed",
            "scope": "the floor of a sea or ocean."
        }
    ],
    "place_term": [],
    "image": [
        {
            "name": "https:\/\/www.sciencebase.gov\/catalog\/file\/get\/5c5ccc99e4b0fe48cb31259b?name=2014-622-FA_Chenega_UTM6N_10m_Backscatter_map.png&allowOpen=true",
            "description": "Map showing acoustic-backscatter data southwest of Chenega Island"
        }
    ],
    "fan": [
        "2014-622-FA"
    ]
}