{
    "tag": 18656,
    "title": "Laboratory Observations of Oscillatory Flow Over Sand Ripples: Velocity Metadata",
    "pubdate": "20240920",
    "sername": null,
    "series_name": null,
    "issue": null,
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/spcmsc\/NRL_LabObs_SandRipple_Velocity_metadata.faq.html",
    "format": null,
    "email": null,
    "descript": "These data comprise laboratory observations of oscillatory flows over mobile sand ripples. The data were collected January 6-7, 2016, in the small-oscillatory flow tunnel (S-OFT) in the Sediment Dynamics Laboratory at the U.S. Naval Research Laboratory (NRL), Stennis Space Center, Mississippi (MS), while Donya Frank-Gilchrist was a National Research Council post-doctoral fellow there. The flow tunnel has a 2-m long acrylic test section which was filled with coarse quartz sand. A piston and flywheel were used to drive the oscillatory flows, from which equilibrium sand ripples developed. The experimental setup comprised of three Photron cameras and a double-pulsed Litron Nd:YAG laser, synced and sampled at 100 hertz (Hz) in double-framed mode. The fluid velocities were obtained through Particle Image Velocimetry (PIV) processed with LaVision DaVis 11 software. The processed fluid velocities were exported from the original file format (.vc7) to network Common Data Form (netcdf, .nc) files for inclusion in this data release. For further information regarding experimental setup, methods, and results, refer to Frank-Gilchrist and others (2018, 2024).",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Frank-Gilchrist, Donya P.",
            "role": "Author"
        },
        {
            "name": "Penko, Allison M.",
            "role": "Author"
        },
        {
            "name": "Calantoni, Joseph",
            "role": "Author"
        },
        {
            "name": "Palmsten, Margaret L.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "1799",
            "name": "coastal processes",
            "scope": "Processes unique to coastal areas including longshore transport, beach erosion, storm surge, shoreline change, delta formation, barrier island migration, beach stabilization by vegetation"
        },
        {
            "thcode": 2,
            "code": "468",
            "name": "geomorphology",
            "scope": "Branch of geology dealing with surface land features and the processes that create and change them."
        },
        {
            "thcode": 2,
            "code": "574",
            "name": "image analysis",
            "scope": "Pattern analysis of the shapes and textures of images to identify features and derive information about them."
        },
        {
            "thcode": 2,
            "code": "575",
            "name": "image collections",
            "scope": "Visible representations of objects or earth properties produced by cameras, spectral instruments, or as graphical representations of measurements."
        },
        {
            "thcode": 2,
            "code": "619",
            "name": "laboratory methods",
            "scope": "Techniques to analyze and test samples in a place equipped and designed for the work."
        },
        {
            "thcode": 2,
            "code": "818",
            "name": "ocean sciences",
            "scope": "Sciences involved in the study of geological, biological, chemical, and physical characteristics and processes of the oceans."
        },
        {
            "thcode": 2,
            "code": "1672",
            "name": "optical methods",
            "scope": "Measurement of light transmission or reflectance in the field to estimate, for example, the density of suspended sediment in water bodies."
        },
        {
            "thcode": 15,
            "code": "007",
            "name": "environment",
            "scope": "Environmental resources, protection and conservation, for example environmental pollution, waste storage and treatment, environmental impact assessment, monitoring environmental risk, nature reserves, landscape, water quality, air quality, environmental modeling"
        },
        {
            "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"
        }
    ],
    "place_term": [],
    "image": [],
    "fan": [
        "2016-371-DD"
    ]
}