sw109sc_video_observations

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What does this data set describe?

Title: sw109sc_video_observations
Abstract:
This part of DS 781 presents video observations from cruise SW109SC for the Santa Barbara Channel region and beyond in southern California. The vector data file is included in "sw109sc_video_observations.zip," which is accessible from http://pubs.usgs.gov/ds/781/video_observations/data_catalog_video_observations.html. Some of the video observations from cruise SW109SC are published in Scientific Investigations Map 3254, "California State Waters Map Series--Offshore of Ventura, California" (see sheet 6). In addition, some of the video observations will be published in six future California State Waters Map Series SIMs of the region (namely, the Offshore of Point Dume, Magu Canyon and Vicinity, Offshore of Coal Oil Point, Offshore of Refugio Beach, Offshore of Gaviota, and Offshore of Point Conception map areas). Between 2006 and 2007, the seafloor in the Offshore of Point Dume, Mugu Canyon and Vicinity, Offshore of Ventura, Offshore of Coal Oil Point, Offshore of Refugio Beach, Offshore of Gaviota, and Offshore of Point Conception map areas in southern California was mapped by California State University, Monterey Bay, Seafloor Mapping Lab (CSUMB) and by the U.S. Geological Survey (USGS), using both multibeam echosounders and bathymetric sidescan sonar units (for example, see sheets 1, 2, and 3, SIM 3254, for details). These mapping missions combined to collect bathymetry and acoustic-backscatter data from about the 10-m isobath to out beyond the 3-nautical-mile limit of California's State Waters. To validate the interpretations of sonar data in order to turn it into geologically and biologically useful information, the USGS ground-truth surveyed the data by towing camera sleds over specific locations throughout the region. During the 2008 ground-truth cruise, the camera sled housed two video cameras (one forward looking and the other vertical looking), a high-definition video camera, and an 8-megapixel digital still camera. The video was fed in real time to the research vessel, where USGS and NOAA scientists recorded both the geologic and biologic character of the seafloor into programmable keypads once every minute. In addition to recording the seafloor characteristics, a digital still photograph was captured once every 30 seconds. This ArcGIS shape file includes the position of the camera, the time each observation was started, and the visual observations of geologic and biologic habitat.
Supplemental_Information:
Information about the data collection field activity, S-W1-09-SC, is at <http://walrus.wr.usgs.gov/infobank/s/sw109sc/html/s-w1-09-sc.meta.html>. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
  1. How might this data set be cited?
    Phillips, Eleyne, Dartnell, Pete, Edwards, Brian, Golden, Nadine, Krigsman, Lisa, and Gilbane, Lisa, 2013, sw109sc_video_observations:.

    This is part of the following larger work.

    Golden, Nadine E., 2013, California State Waters Map Series Data Catalog: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -120.552933
    East_Bounding_Coordinate: -118.276947
    North_Bounding_Coordinate: 34.513517
    South_Bounding_Coordinate: 33.280810
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 10-Aug-2009
    Ending_Date: 21-Aug-2009
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • Entity point (2,380)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257224.
  7. How does the data set describe geographic features?
    sw109sc_video_observations
    The shapefile includes vector point data of observed geologic and biologic features when each observation was taken. The shapefile can be added to any ESRI ArcMap project. (Source: USGS)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the ArcGIS features
    DATE
    Cruise Date. Month, day, year format (mmddyyy) (Source: USGS) Date of observation
    TIME
    Greenwich Mean Time (GMT) also commonly referred to as Coordinated Universal Time (UTC). (Source: USGS) Time of observation
    LATITUDE
    Latitude (Source: USGS)
    Range of values
    Minimum:34.103513
    Maximum:34.101858
    Units:Decimal degrees; Southern Hemisphere values are negative.
    LONGITUDE
    Longitude (Source: USGS)
    Range of values
    Minimum:-119.255818
    Maximum:-119.246218
    Units:Decimal degrees; Western Hemisphere values are negative.
    HEADING
    Bearing (Source: USGS) The angle measured in degrees in a clockwise direction from the north line.
    COURSE
    Direction and route (Source: USGS) Not currently used
    SPEED
    Rate of movement (Source: USGS) Not currently used
    LOGENTRY
    Comments and notes manually recorded during an observation. (Source: USGS) Annotation
    MAJOR_GEO
    Primary substrate constitutes greater than fifty percent of the seafloor during an observation. The values are based on the Wentworth scale except that granule and pebble sizes have been grouped together into a class called "gravel," and clay and silt sizes have been grouped together into a class called "mud." (Source: USGS)
    ValueDefinition
    RockExposed bedrock
    Boulder25.5 cm or greater
    CobbleBetween 25.5 cm and 6.5 cm
    GravelBetween 6.5 and .2 cm
    SandBetween .2 cm or .00625 cm
    Mud.00625 cm or smaller
    MINOR_GEO
    Secondary substrates constitute greater than twenty percent of the seafloor during an observation. The classes are based on the Wentworth scale except that granule and pebble sizes have been grouped together into a class called "gravel," and clay and silt sizes have been grouped together into a class called "mud." (Source: USGS)
    ValueDefinition
    RockExposed bedrock
    Boulder25.5 cm or greater
    CobbleBetween 25.5 cm and 6.5 cm
    GravelBetween 6.5 and .2 cm
    SandBetween .2 cm or .00625 cm
    Mud.00625 cm or smaller
    SLOPE
    A visual estimate of slope of the seafloor (Source: USGS)
    ValueDefinition
    LowFlat seafloor
    MediumNot flat or extreme.
    HighExtreme rock face.
    ABIO_COMP
    Abiotic complexity (rugosity) or roughness of the seafloor. (Source: USGS)
    ValueDefinition
    LowNo space available for potential refuge for both juvenile and adult species
    MediumSome small holes and space available for potential refuge for both juvenile and adult species
    HighLarge holes and spaces available for potential refuge for both juvenile and adult species
    BIO_COMP
    Biologic Complexity (structure). (Source: USGS)
    ValueDefinition
    LowNo plant cover available for potential refuge for both juvenile and adult species
    MediumSome plant cover available for potential refuge for both juvenile and adult species
    HighHigh volume of plant cover available for potential refuge for both juvenile and adult species
    BIO_COVER
    Biologic cover (Source: USGS)
    ValueDefinition
    noDenote no biological cover.
    yesDenote that biological cover is present.
    INTERFACE
    substrate change (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ALGAE
    Algae observed on the seafloor (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANEMONE_AG
    aggregating anemone (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANEMONE_SO
    solitary anemone (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANEMONE_TU
    tube anemone (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANTHR_FISH
    fishing gear (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANTHR_GAUG
    anthropogenic gouge (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANTHRO
    anthropogenic material (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANTHRO_A
    assignable anthro key (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BAT_STAR
    bat star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BIOTURB
    bioturbation of sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BLOOD_STAR
    blood star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BRACH
    brachiopod (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BRANCH_BRY
    branching bryozoan (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BRANCHIOPO
    branchiopod (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BRIT_IN
    brittle star in sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BRIT_ON
    brittle star on sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BRYOZOAN
    bryozoan (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    COBBLE_ISO
    isolated cobble (outsized clast) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    COQUINA
    coquina (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CRAB
    Crab (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CRAB_CNCR
    cancer crab (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CRAB_HERMI
    hermit crab (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CUP_CORAL
    cup coral (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CURRENT_SC
    current scour in sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    DEPRESSION
    depression in sediment - occasionally feeding pits (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    DRIFT_WEED
    detached algae or kelp (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EGG_CASE_C
    chondrichthyes egg case (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EGG_CASE_M
    mollusc egg case (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ENCUSTING
    encrusting invertebrates (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FISH
    unassigned fish (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FISH_A
    placeholder fish species for on-the-fly identification (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FISH_B
    placeholder fish species for on-the-fly identification (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FISH_C
    placeholder fish species for on-the-fly identification (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FLATFISH
    flatfish (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FLESHY_PEN
    fleshy sea pen (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FRILL_CUC
    frilly sea cucumber (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GASTROPOD
    gastropod (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GEO_A
    placeholder for definable geologic descriptor (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GEO_B
    placeholder for definable geologic descriptor (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GEO_C
    placeholder for definable geologic descriptor (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GOBY
    goby (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GORG
    gorgonian (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GREENLING
    kelp greenling (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GREY_PUFFB
    grey puffball sponge (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    HAGFISH
    hagfish (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    HYDROCORAL
    hydrocoral (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    HYDROID
    hydroid (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    INTERFAC_1
    interface in substrate type during 10-second observation window (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    KELP
    kelp (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    LINGCOD
    lingcod (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    LOBSTER
    lobster (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    MEDIASTER
    mediaster (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    METRIDIUM
    metridium (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    MOUND
    sediment mound - generally related to burrowing activity (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    OCTOPUS
    octopus (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ORANGE_PUF
    orange puffball sponge (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    PINCUSHION
    pincushion star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    PINK_PIAS
    pink pisaster (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    PROSTCNID
    prostrate cnidarian (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RAINBOW_ST
    rainbow star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RATFISH
    ratfish (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RAY
    ray (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RIP_DEGRAD
    degraded ripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RIP_MEGA
    megaripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RIPPLE
    ripple (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ROCK_BROKE
    broken blocky rock (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ROCK_FRACT
    fractured rock (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ROCK_ISO
    rock island (in sediment) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ROCK_SED
    sedimentary rock (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ROCK_TALUS
    rock talus (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ROCKFISH
    rockfish (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SAND_CHNL
    channel between rocky outcrops filled with sand (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SAND_DOLLA
    sand dollars (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SAND_STAR
    sand star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SCULPIN
    sculpin (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SEA_CUC
    sea cucumber (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SEA_HARE
    sea hare (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SEA_PEN
    pennatulid (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SEA_SLUG
    sea slug (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SEA_STAR
    sea star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SEA_WHIP
    sea whip (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SHARK
    shark (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SHELL_SCAT
    scattered shells (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SHRIMP
    shrimp (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SKATE
    skate (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SPONGE3D
    sponge three dimensional (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    STAR_BASK
    basket star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    STAR_LEATH
    leather star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    STOMUS
    sebastomus (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SUN_STAR
    sun star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    TRACKS_TRA
    tracks and trails (biogenic in sediment) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    TUBE_WORM
    tube worm (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    TUNICATE
    tunicate (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    URCHIN
    urchin (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    VIS_LESS_1
    visibility <1m (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    VIS_LESS_H
    visibility <.5m (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    VIS_MORE_1
    visibility >1m (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    WHIP_PEN
    pennatulid (short) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    Depth
    Depth Value (Source: USGS)
    Range of values
    Minimum:0.00
    Maximum:-300.00
    Units:Decimal meters below mean sea level.
    CLASS
    This seafloor character class was produced using video-supervised maximum likelihood classification of the bathymetry and backscatter (intensity of return) signals from sonar systems. Derivative roughness (rugosity), and backscatter intensity were used as variants in the classification. The substrate classes have been divided into the California Marine Life Protection Act depth zones mapped in this area, zone 2 (intertidal to 30 meters), 3 (30 to 100 meters) and 4 (greater than 100 meters), and slope classes 1 (0 to 5 degrees), 2 (5 to 30 degrees), 3 (30 to 60 degrees) and 4 (60 to 90 degrees). Zone 1 (intertidal) is not included in this dataset. (Source: USGS)
    ValueDefinition
    1Smooth sediment
    2Mixed sediment and smooth rock
    3Rugose boulder and rock
    LINE
    Video observation camera line. (Source: USGS) Name or number of camera line
    TAPE
    MiniDV tape numbered consecutively throughout cruise. (Source: USGS) Name or number of tape

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Eleyne Phillips
    • Pete Dartnell
    • Brian Edwards
    • Nadine Golden
    • Lisa Krigsman
    • Lisa Gilbane
  2. Who also contributed to the data set?
    The authors would like to thank Hank Chezar of the USGS Western Region Coastal and Marine Geology Program (in Santa Cruz and Menlo Park, CA) for field support and equipment support. Jackson Currie, Peter Harkins, Hank Chezar, and Tim Elfers at the USGS Marine Facility (Santa Cruz, CA) contributed field support and logistical support.
  3. To whom should users address questions about the data?
    Pete Dartnell
    U.S. Geological Survey, Coastal and Marine Geology
    Physical Scientist
    345 Middlefield Rd MS-999
    Menlo Park, CA
    USA

    (650) 329-5460 (voice)
    (650) 329-5198 (FAX)
    pdartnell@usgs.gov

Why was the data set created?

These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 2011 (process 1 of 5)
    The camera sled tracklines were sited through video fed up to the research vessel in real time, where USGS and NOAA scientists recorded both the geologic and biologic character of the seafloor. While the camera was deployed, observations were recorded for a 10-second period once every minute. On shore the observation comma delimited text file was converted to an ArcGIS shapefile.
    Date: 05-Oct-2017 (process 2 of 5)
    Modified Distribution_Information section in metadata to facilitate data download. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Alan O. Allwardt
    Contractor -- Information Specialist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7551 (voice)
    831-427-4748 (FAX)
    aallwardt@usgs.gov
    Date: 05-Oct-2017 (process 3 of 5)
    Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Alan O. Allwardt
    Contractor -- Information Specialist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7551 (voice)
    831-427-4748 (FAX)
    aallwardt@usgs.gov
    Date: 26-Apr-2018 (process 4 of 5)
    Added keywords from Coastal and Marine Ecological Classification Standard (CMECS) to metadata. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Alan O. Allwardt
    Contractor -- Information Specialist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7551 (voice)
    831-427-4748 (FAX)
    aallwardt@usgs.gov
    Date: 19-Oct-2020 (process 5 of 5)
    Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Water proof camera is submerged and connected to GPS receiver at the surface with Red Hen Systems VMS 300 hardware. Georeferenced video and still photos are collected. Visual observations of variable unknown accuracy.
  2. How accurate are the geographic locations?
    Highly variable on the order of 10 meters.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Observation are from one minute intervals. Some gaps in observations exist due to technical problems or sediment dispersion covering the camera lens.
  5. How consistent are the relationships among the observations, including topology?
    Point features present.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None
Use_Constraints:
This information is not intended for navigational purposes. Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data. Acknowledge the U.S. Geological Survey in products derived from these data. Share data products developed using these data with the U.S. Geological Survey. This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey
    345 Middlefield Rd
    Menlo Park, CA
    USA

    (650) 329-4309 (voice)
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 19-Oct-2020
Metadata author:
U.S. Geological Survey, Coastal and Marine Geology
Attn: Nadine Golden
Geographer
USGS, 400 Natural Bridges Dr
Santa Cruz, CA

(831) 460-7530 (voice)
(831) 427-4709 (FAX)
ngolden@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/SeriesReports/DS_DDS/DS_781/VideoObservations/sw109sc_video_observations_metadata.faq.html>
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