Underwater video footage, March 2014, Faga'alu Bay, Tutuila Island, American Samoa

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Frequently anticipated questions:

What does this data set describe?

Title:
Underwater video footage, March 2014, Faga'alu Bay, Tutuila Island, American Samoa
Abstract:
Underwater video imagery was collected in March 2014 in the nearshore waters of Faga'alu Bay on the Island of Tutuila, American Samoa, as part of the U.S. Geological Survey Coastal and Marine Geology Program's Pacific Coral Reefs Project. Included here are 40 video files in .mpg format and an Environmental Systems Research Institute (ESRI) shapefile with location (navigation) points every two seconds.
Supplemental_Information:
Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-604-FA
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 Esri format, this metadata file may include some Esri-specific terminology.
  1. How might this data set be cited?
    Gibbs, Ann E., and D’Antonio, Nicole L., 2016, Underwater video footage, March 2014, Faga'alu Bay, Tutuila Island, American Samoa: data release DOI:10.5066/F70V89V6, U.S. Geological Survey, Coastal and Marine Geology Program, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -170.682587
    East_Bounding_Coordinate: -170.670392
    North_Bounding_Coordinate: -14.284525
    South_Bounding_Coordinate: -14.295932
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/56422b6fe4b0831b7d62e7da?name=W0114SP_VideoTrackPts.jpg&allowOpen=true (JPG)
    image map showing Faga'alu Bay overlaid with video track points
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 04-Mar-2014
    Ending_Date: 08-Mar-2014
    Currentness_Reference:
    ground condition at time data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: Vector Digital Data Set (Point)
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Entity point (10798)
    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 0.0198244904. Longitudes are given to the nearest 0.0206891770. Latitude and longitude values are specified in Decimal seconds. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    Attribute Table
    Table containing attribute information associated with the data set. (Source: Producer defined)
    LAT
    Latitude (Source: ESRI "http://support.esri.com/en/knowledgebase/gisdictionary/term/latitude")
    Range of values
    Minimum:-14.295932
    Maximum:-14.284525
    LON
    Longitude (Source: ESRI "http://support.esri.com/en/knowledgebase/gisdictionary/term/longitude")
    Range of values
    Minimum:-170.682587
    Maximum:-170.670392
    ISLAND
    Name of nearest island (Source: USGS)
    ValueDefinition
    TutuilaThe island of Tutuila, American Samoa
    DATE_
    Date of collection (UTC) (Source: Red Hen Systems)
    ValueDefinition
    04Mar14Unknown
    05Mar14Unknown
    06Mar14Unknown
    07Mar14Unknown
    08Mar14Unknown
    UTC
    UTC time (MS OLE format) (Source: Microsoft "http://support.microsoft.com/kb/241072")
    Range of values
    Minimum:41702.984097
    Maximum:41706.04456
    VTR_TIME
    Time code reference from video hardware (Source: Red Hen Systems) Elapsed time from start of video file
    FILENAME
    Name of video file associated with navigation points (Source: Producer defined) AWB = Automatic White Balance filter applied to video GOPRO and GP = Video collected with a GoPro camera; files with numerical values collected with the BOBSled camera system
    FILESZ_MB
    Size of video file in megabytes (Source: Producer defined)
    Range of values
    Minimum:7
    Maximum:6971
    FACS_ID
    USGS Pacific Coastal and Marine Science Center Field Activity Collection System (FACS) Identification Code (Source: USGS)
    ValueDefinition
    W-01-14-SPUnknown
    CMGDS_ID
    USGS Coastal and Marine Geoscience Data System (CMGDS) Identification Code (Source: USGS)
    ValueDefinition
    2014-604-FAUnknown
    Entity_and_Attribute_Overview:
    The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set.
    Entity_and_Attribute_Detail_Citation:
    The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Ann E. Gibbs
    • Nicole L. D’Antonio
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    USGS Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission St
    Santa Cruz, CA
    USA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

The imagery was collected to improve seafloor characterization and for the development and groundtruthing of benthic habitat maps.

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: 08-Mar-2014 (process 1 of 7)
    Video footage was collected using two platforms and two camera systems. On 04-06 March 2014 imagery was collected using a GoPro Hero 3 camera from a fixed mount on a Boston Whaler. Data were collected while underway, typically in water depths greater than 5 meters, in conjunction with the collection of bathymetry and backscatter data.Footage collected on 06 March between 20:38 and 23:04 was collected from the Boston Whaler using a towed camera system called the MiniBOBSled. This system, developed at the USGS Pacific Coastal and Marine Science Center, has a Sony FCB-H11 block camera which transmits full resolution high definition video (1920x1080i) to the surface via a fiber-optic connection. Footage collected on 07-08 March 2014 was collected using the GoPro Hero 3 from a fixed mount on a kayak. Both systems made use of a VMS200, a commercially available device from Red Hen Systems, LLC, to encode GPS data on the left audio track of the video as it is recorded. By encoding the real-time GPS data on the video's audio track the spatial locations of the video can be extracted, or indexed, using Red Hen System's proprietary software Media Mapper.
    Date: 18-Feb-2015 (process 2 of 7)
    Video was edited to remove footage where imagery was poor and/or no benthic cover type could be determined. It was color corrected using an automatic white balance filter.
    Date: 21-Aug-2015 (process 3 of 7)
    Processed video was indexed using Red Hen Systems MediaMapper to create a navigation trackpoint shapefile for each video file. Individual shapefiles were merged into a single navigation file and attributes added and deleted to produce the final shapefile.
    Date: 20-Jul-2018 (process 4 of 7)
    Keywords section of metadata edited for consistency across the USGS Pacific Coastal and Marine Science Center and to further optimize discovery in search engines and data catalogs. Metadata was modified to bring up to current USGS PCMSC standards. Minor typos were corrected. No data information was changed. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Geologist
    2885 Mission Street
    Santa Cruz, CA
    USA

    (831) 460-7545 (voice)
    scochran@usgs.gov
    Date: 05-Sep-2018 (process 5 of 7)
    Corrected Point of Contact and Metadata Contact phone number prefix. No data were changed. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
    Date: 06-Oct-2020 (process 6 of 7)
    Refined the Access Instructions section to better reflect the data download choices. No data were changed. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
    Date: 19-Oct-2020 (process 7 of 7)
    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?
    D’Antonio, Nicole L., and Gibbs, Ann E., 2016, Still-image frame grabs and benthic habitat interpretation of underwater video footage, March 2014, Faga'alu Bay, American Samoa: U.S. Geological Survey, Coastal and Marine Geology Program, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

    Cochran, Susan A., Gibbs, Ann E., D’Antonio, Nicole L., and Storlazzi, Curt D., 2016, Benthic habitat map of U.S. Coral Reef Task Force Faga'alu Bay priority study area, Tutuila, American Samoa: U.S. Geological Survey, Reston, VA.

    Online Links:

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

  1. How well have the observations been checked?
    Accuracy of data set attribute information was deduced to be good based both on visual examination of video imagery, navigation trackline location on agreement with observer's field knowledge.
  2. How accurate are the geographic locations?
    The position of the data reflect the position of the GPS antenna on board the boat when data were collected and not the real location of the camera in the water. Positional data in this report were not corrected for layback and thus represent only approximate locations.
  3. How accurate are the heights or depths?
    A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.
  4. Where are the gaps in the data? What is missing?
    Data represent ground conditions of Faga'alu Bay only along individual tracklines where data were collected.
  5. How consistent are the relationships among the observations, including topology?
    Data are logically accurate

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:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. Use of appropriate byline/photo/image credit is requested; Suggested credit: Photo by USGS (or U.S. Geological Survey, depending on audience).
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - Science Base
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO

    888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? Individual video clips are available for download in .mpg format; file names correspond to tracklines in the associated shapefile (W0114SP_VideoTrackPts.zip).
  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?
  5. What hardware or software do I need in order to use the data set?
    To utilize these data, the user must have software capable of uncompressing the zip file and importing and viewing an ArcGIS shapefile.

Who wrote the metadata?

Dates:
Last modified: 19-Oct-2020
Metadata author:
USGS Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission St
Santa Cruz, CA
USA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_F70V89V6/W0114SP_VideoTrackPts.meta.faq.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:17:09 2021