z107sc_video_observations

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What does this data set describe?

Title: z107sc_video_observations
Abstract:
This part of DS 781 presents video observations from cruise Z107SC for the Santa Barbara Channel region and beyond in southern California. The vector data file is included in "z107sc_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 Z107SC are published in Scientific Investigations Map 3225, "California State Waters Map Series--Hueneme Canyon and Vicinity, California" (see sheet 6). In addition, some of the video observations will be published in three future California State Waters Map Series SIMs of the region (namely, the Mugu Canyon and Vicinity, Offshore of Coal Oil Point, and Offshore of Gaviota map areas). Between 2006 and 2007, the seafloor in the Mugu Canyon and Vicinity, Hueneme Canyon and Vicinity, Offshore of Coal Oil Point, and Offshore of Gaviota 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 3225, 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 Z-1-07-sc is at http://walrus.wr.usgs.gov/infobank/z/z107sc/html/z-1-07-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?
    Dartnell, Pete, Conrad, Jamie, Golden, Nadine, Phillips, Eleyne, Boyle, Mike, Edwards, Brian, and McCrea, Merit, 2013, z107sc_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: -120.296705
    East_Bounding_Coordinate: -119.127344
    North_Bounding_Coordinate: 34.449593
    South_Bounding_Coordinate: 34.065623
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 26-Jun-2007
    Ending_Date: 15-Jul-2007
    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 (668)
    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?
    z107sc_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
    mmddyyy. Month, day, year format (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
    Not currently used (Source: USGS) Not currently used
    SPEED
    Not currently used (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 cm and .2 cm
    SandBetween .2 cm and .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 cm and .2 cm
    SandBetween .2 cm and .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
    ModerateSome 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
    TraceNo plant cover available for potential refuge for both juvenile and adult species
    LowSmall amount of plant cover available for potential refuge for both juvenile and adult species
    ModerateSome 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
    BarrenDenotes no biological cover.
    LowDenotes small amount biological cover.
    ModerateDenotes some biological cover.
    HighDenotes high volume biological cover is present.
    ALG
    algae (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    AMP_TB
    amphipod tubes (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANM_B
    burrowing anemone (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANM_M
    metridium (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANM_O
    other anemone (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ANM_SR
    sand rose anemone (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ART_O
    arthropod (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ATH_FG
    fishing gear (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ATH_O
    anthropogenic detritus (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ATH_T
    trawl mark (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    B_L
    large burrow (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    B_O
    other burrow (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    B_S
    small burrow (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BD_TR
    body trace in sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BIV
    bivalve (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BR_R
    red brittle star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BR_W
    white brittle star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BUBB
    bubbles (gas) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    BYZ
    bryozoans (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CB_B
    box crab (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CB_G
    galatheid crab (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CB_H
    hermit crab (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CB_S
    spider crab (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CIR
    circle scribe (current effects on sediment) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    COR_A
    articulated coral (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    COR_E
    encrusting coral (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    COR_O
    other coral (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CR_BO
    current-bowed organism (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CR_L
    current lineation in sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CR_O
    other current indicators (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CR_SC
    current scour in sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CR_SM
    current smoothing of sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CRI
    crinoid (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CRUST_O
    other crustacean (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CUC
    sea cucumber (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    CUC_W
    warty sea cucumber (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    D_CVR
    diatom cover (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    DF_WD
    detached algae or kelp (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EC_DB
    deep, burrowing urchin (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EC_P
    purple urchin (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EC_SB
    shallow burrowing urchin (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EC_SD
    sand dollar (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EC_U
    regular urchin (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EC_W
    white urchin (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EGG_M
    mollusc egg case (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    EGG_R
    chondrichthes egg case (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    ELS
    elasmobranch (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FF
    flat fish (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    FTLS
    featureless seafloor (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    G_BG
    brown/green gorgonian (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    G_E
    erect gorgonian (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    G_O
    other gorgonian (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    G_P
    prostrate gorgonian (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    G_PR
    purple gorgonian (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    G_R
    red gorgonian (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    G_SW
    sea whip (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    G_SWS
    sea whip stub (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GSP
    gastropod (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    GSP_H
    sea hare (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    HMK
    biogenically hummocky seafloor (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    HYD
    hydroid (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    INV_O
    other invertebrate (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    KLP
    kelp (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    KLP_CVR
    complete obstruction of seafloor by kelp (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    LOB
    lobster (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    MND
    mound of sediment, generally associated with burrowing (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    OCT
    octopus (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    OCT_D
    octopus doflenii (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    OCT_R
    octopus rubescens (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    P_G
    gentle pit (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    P_O
    other pit (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    P_S
    sharp pit (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    PM
    biogenic plowing of sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    PN_O
    other pennatulid (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    PN_SP
    sea pen (fleshy) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    POO
    fecal coil (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RF
    other fish (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RF_S
    sebastomus (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_A
    asymmetrical ripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_C
    confused ripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_D
    degraded ripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_M
    megaripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_O
    other ripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_OC
    oscillatory ripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_S
    subtle ripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_SH
    sharp-crested ripples (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RP_SW
    sediment wave (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RX_F
    fractured rock (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RX_I
    rock island (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RX_S
    sedimentary rock (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RX_T
    rock talus (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RX_X
    broken blocky rock (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    RZC
    razor clam (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SB_C
    unknown (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SC_C
    scattered cobbles (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SC_LF
    single-leaved algae (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SC_SH
    scattered shell (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_BR
    brittle star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_BS
    basket star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_BT
    bat star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_L
    luidea (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_M
    mediaster (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_O
    other sea star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_P
    pycnopodia (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_RB
    red brittle star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_S
    sand star (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_WI
    white brittle star in sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SF_WO
    white brittle star on sediment (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SHP
    shrimp (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SP_E
    encrusting sponge (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SP_O
    orange sponge (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SP_S
    solitary sponge (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SP_T
    three-dimensional sponge (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    SQD
    squid (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    STH_G
    unknown (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    TM
    tool mark (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    TR_MND
    tar mound (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    TRF
    turf (algal/diatom coverage of sediment) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    TT
    tracks/trails in sediment (biogenic) (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    TUN
    tunicate (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    UF
    unknown fish (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    VH
    high visibility (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    VP
    poor visibility (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    WRM_F
    feather worm (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    WRM_T
    tube worm (Source: USGS)
    ValueDefinition
    0Denote absence of the species or feature.
    1Denote presence of the species or feature.
    YOY
    young of year (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 and slope classes in this area: Depth Zone 2 (intertidal to 30 meters), Depth Zone 3 (30 to 100 meters), Depth Zone 4 (greater than 100 meters), Slope Class 1 (0 to 5 degrees), Slope Class 2 (5 to 30 degrees), Slope Class 3 (30 to 60 degrees), and Slope Class 4 (60 to 90 degrees). Depth Zone 1 (intertidal) is not present in this map area (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)
    • Pete Dartnell
    • Jamie Conrad
    • Nadine Golden
    • Eleyne Phillips
    • Mike Boyle
    • Brian Edwards
    • Merit McCrea
  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. Mike Boyle, Larry Kooker, Tom Reiss, Davide Finlayson, Diane Minasian, and Peter Triezenberg at the USGS Marine Facility (Redwood City, 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) 329-5190 (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: 2008 (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. Onshore, 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?
    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?
    Observations made without uniform protocol.
  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:
Public domain data from the U.S. government is freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. This information is not intended for navigational purposes Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  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) 427-4748 (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/z107sc_video_observations_metadata.faq.html>
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