Location of sea floor video tracklines along with videos collected in 2014 by the U.S. Geological Survey offshore of Fire Island, NY (MP4 videos files and Esri polyline shapefile, Geographic, WGS 84)

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Frequently anticipated questions:

What does this data set describe?

Title:
Location of sea floor video tracklines along with videos collected in 2014 by the U.S. Geological Survey offshore of Fire Island, NY (MP4 videos files and Esri polyline shapefile, Geographic, WGS 84)
Abstract:
The U.S. Geological Survey (USGS) conducted a geophysical and sampling survey in October 2014 that focused on a series of shoreface-attached ridges offshore of western Fire Island, NY. Seismic-reflection data, surficial grab samples and bottom photographs and video were collected along the lower shoreface and inner continental shelf. The purpose of this survey was to assess the impact of Hurricane Sandy on this coastal region. These data were compared to seismic-reflection and surficial sediment data collected by the USGS in the same area in 2011 to evaluate any post-storm changes in seabed morphology and modern sediment thickness on the inner continental shelf. For more information about the WHCMSC Field Activity, see: https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-009-FA.
  1. How might this data set be cited?
    U.S. Geological Survey, 2017, Location of sea floor video tracklines along with videos collected in 2014 by the U.S. Geological Survey offshore of Fire Island, NY (MP4 videos files and Esri polyline shapefile, Geographic, WGS 84): data release DOI:10.5066/F7FF3QTQ, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts.

    Online Links:

    This is part of the following larger work.

    Denny, Jane F., Schwab, William C., Ackerman, Seth D., Baldwin, Wayne E., Danforth, William W., Moore, Eric, Nichols, Alexander R., and Worley, Charles R., 2017, High-resolution geophysical and sample data collected offshore of Fire Island, NY in 2014, U.S. Geological Survey Field Activity 2014-009-FA: data release DOI:10.5066/F7FF3QTQ, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -73.215688
    East_Bounding_Coordinate: -72.934249
    North_Bounding_Coordinate: 40.693128
    South_Bounding_Coordinate: 40.610294
  3. What does it look like?
    https://cmgds.marine.usgs.gov/data/field-activity-data/2014-009-FA/data/imagery/2014-009-FA_videos_browse.jpg (JPG)
    Thumbnail image of sea floor video data locations collected by the U.S. Geological Survey offshore of Fire Island, NY, 2014.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 26-Oct-2014
    Ending_Date: 26-Oct-2014
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: raster and 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 Raster data set. It contains the following raster data types:
      • Dimensions, type Pixel
    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?
    2014-009-FA_videos
    sea floor videos and locations (Source: U.S. Geological Survey)
    FID
    Internal feature number. (Source: Esri) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: Esri) Coordinates defining the features.
    STATION
    Sequential station number scheme designated in the field. This number corresponds to the sample locations. (Source: U.S. Geological Survey) String used to distinguish sampling stations.
    VIDNAME
    Name of sea floor video file used to uniquely identify between stations, cameras, and video files: i.e. 2014-009-FA_S1_GOPR6514.MP4, where 2014-009-FA refers to the field activity identifier, S1 is the station number, and GOPR6514.MP4 refers to the original filename assigned to the video by the camera. (Source: U.S. Geological Survey) String used to distinguish video clips.
    GPSSTART
    UTC start time of seafloor video clip with time determined by the GPS navigation file in format HH:MM:SS. (Source: U.S. Geological Survey) UTC start time of seafloor video determined by the GPS.
    GPSEND
    UTC end time of seafloor video clip with time determined by the GPS navigation file in format HH:MM:SS. (Source: U.S. Geological Survey) UTC end time of seafloor video determined by the GPS.
    LENGTH_M
    Distance (in meters) covered by the vessel for the duration of the video clip. In this case, the distances are minimal as the sampler was set down on the sea floor only briefly enough to let the suspended sediment "kicked up" by the landing settle and get a decent photograph and video clip. Lenth was calculated in UTM, Zone 18, WGS84, meters. (Source: U.S. Geological Survey)
    Range of values
    Minimum:6.15
    Maximum:44.41
    Units:meters
    Resolution:0.01
    CAMERA
    GoPro camera used to collect sea floor imagery. (Source: U.S. Geological Survey) String used to distinguish between different camera models mounted on the SEABOSS.
    JD
    Julian day; Julian day is the integer number representing the interval of time in days since January 1 of the year (299 for these data). (Source: U.S. Geological Survey)
    Range of values
    Minimum:299
    Maximum:299
    Units:days
    Resolution:1
    DATE
    Date that the sea floor video was collected in the format: YYYYMMDD (20141026 for these data). (Source: U.S. Geological Survey)
    Range of values
    Minimum:20141026
    Maximum:20141026
    Units:date
    Resolution:1
    YEAR
    Year that the sea floor video was collected (2014 for these data). (Source: U.S. Geological Survey)
    Range of values
    Minimum:2014
    Maximum:2014
    Units:years
    Resolution:1
    CRUISE_ID
    WHCMSC field activity identifier (e.g. "2014-009-FA" where 2014 is the survey year, 009 is survey number of that year, and FA is Field Activity). (Source: U.S. Geological Survey) String used to distinguish cruises by year and ID number.
    DEVICE_ID
    Device used to collect the sample and sea floor video. (Source: U.S. Geological Survey) String used to identify the SEABOSS configuration used during the survey.
    VEHICLE_ID
    Vehicle (ship) used to collect data during survey 2014-009-FA. (Source: U.S. Geological Survey) String used to identify the survey vessel.
    FIELD_NO
    Sequential station number scheme designated in the field. This number corresponds to the sample locations. *NOTE these are the same values contained in the 'STATION' field. This field is included in order to link the sediment textural data and bottom photographs to the video locations. The 'FIELD_NO' attribute is used within the sediment textural data and the bottom photographs. (Source: Modified from USGS East Coast Sediment Texture Database data dictionary) Character string.
    Entity_and_Attribute_Overview:
    The MP4 videos can be hyperlinked to their shapefile location in ArcGIS.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • U.S. Geological Survey
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Jane F. Denny
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, Massachusetts
    USA

    508-548-8700 x 2311 (voice)
    508-457-2310 (FAX)
    jdenny@usgs.gov

Why was the data set created?

This dataset is used to provide the videos and locations of sea floor videos acquired with a GoPro Hero 3+ Black on a modified SEABed OBservation and Sampling System (SEABOSS) collected during a 2014 USGS cruise along Fire Island, New York. The information contained within the bottom photographs and videos is needed to validate geophysical data. This dataset contains seabed videos from each sampling station, as well as location in Geographic coordinates (WGS84). Physical sediment samples, which provide additional information about the seabed, were also collected at each sampling station and analyzed in the sediment laboratory at the USGS Woods Hole Coastal and Marine Science Center (see shapefile 2014-009-FA_samples.shp available from the larger work citation).

How was the data set created?

  1. From what previous works were the data drawn?
    MP4 video files and text data (source 1 of 1)
    U.S. Geological Survey, Unpublished Material, sea floor video and Navigation.

    Type_of_Source_Media: disc
    Source_Contribution:
    The SEABed Observation and Sampling System (SEABOSS) was designed by the U.S. Geological Survey (USGS) for rapid and effective collection of seabed images and sediment samples in coastal regions. The observations from video and still cameras and the sediment data are used to explore the nature of the seafloor and, in conjunction with high-resolution geophysical data, to make interpretive maps of sedimentary environments and validate the acoustic remote sensing data. This particular setup of the SEABOSS was simplified using a van veen sampler and only GoPro cameras and dive lights to collect sea floor photographs and video without a top-side live video feed. No depth sensor was on the system. In general, the SEABOSS is a simple system that can be deployed from both small and large surface vessels and operates in water depths up to 200m. It typically incorporates two video cameras, a still camera, a depth sensor, and a modified Van Veen sediment sampler. The elements of this particular SEABOSS system are held within a stainless steel framework that measures 1.1 x 1.1 meters and weighs 167 kilograms overall. The frame has a stabilizer fin that orients the system as it drifts over the seabed. The SEABOSS was deployed from the M/V Scarlett Isabella off the ship's A-frame on the stern of the ship. The vessel occupied one of the target stations and deployed the SEABOSS. The winch operator lowered the sampler until the seafloor was sampled. On most stations, the vessel and sampler drifted with wind and current for a few tens of seconds to let the bottom settle and ensure a decent image. The system was then raised and recovered to the deck of the survey vessel. The camera time during this survey was set to UTC; calibration photographs and video with the navigation system indicate that the time offset only drifted by up to 13 seconds throughout the survey and this time offset was not corrected for in the imagery processing.
  2. How were the data generated, processed, and modified?
    Date: Nov-2014 (process 1 of 6)
    Twenty-five stations were occupied aboard the M/V Scarlett Isabella (USGS survey 2014-009-FA) with a modified SEABOSS (Blackwood and Parolski, 2001) that was equipped with a Van Veen grab sampler and two GoPro cameras (Hero 3+ Black, and Hero2) collecting video and photographs. Sea floor video data were acquired at each station, although a second deployment was done at stations 21 and 23, so there are a total of 27 video files. The digital video were downloaded from the camera and backed-up to a laptop and hard-drive periodically during the sampling survey. The original video files alone do not represent spatial data, however, post-processing the video with the navigation data and survey notes makes the link to spatially locate the imagery. The link is possible because the timecode in the video file records acquisition time which can be matched with corresponding time in the navigation logs. However, camera time drift and the precision with which the camera time can be set often results in an offset. In this case, the offset was negligible, ranging from 5 and 13 seconds off of real GPS time, therefore no offset correction was applied to the video in this dataset. Only the video from the primary camera, the GoPro Hero 3+ Black were processed and are being published. This process step and all subsequent process steps were performed by the same person - Seth Ackerman Person who carried out this activity:
    Seth Ackerman
    U.S. Geological Survey
    Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2315 (voice)
    508-457-2310 (FAX)
    sackerman@usgs.gov
    Data sources produced in this process:
    • Video files
    Date: Apr-2017 (process 2 of 6)
    The original GoPro videos were clipped and the date and time (extracted from the timecode embedded in the video) was overlaid on the video using the script TCBURN_sda_2014009FA.csh. The TCBURN_sda_2014009FA.csh script is a shell script that uses FFPROBE to determine the timecode information and the duration of the video clip and uses the FFMPEG software to clip and reformat the video file (if necessary). For each video file, sections of the video during deployment and recovery of the SEABOSS including images of the water column and those on the deck of the survey vessel were removed. The resulting video files were renamed by prepending the field activity identifier and the station number to the original video filename (e.g. 2014-009-FA_S1_GOPR6514.MP4). Data sources used in this process:
    • Original MP4 video files
    Data sources produced in this process:
    • Processed MP4 video files
    Date: Apr-2017 (process 3 of 6)
    Another shell script (extract_firstlast.sh), also using FFPROBE and FFMPEG, is run to create temporary framegrabs (in PNG image format) of the first and last frame of the each processed video file. These are used to create a text drift log that includes the video filename, the sampling station number, the UTC start time, UTC end time and duration of the video file. Data sources used in this process:
    • Processed MP4 video files
    Data sources produced in this process:
    • temporary PNG framegrab images
    • drift log text file
    Date: Apr-2017 (process 4 of 6)
    Then a series of PYTHON scripts (SEABOSStools) were run to match up the video clips with the navigation log. (1) parseHYPACKfolder_gui_sort_all.py - PYTHON script that parses HYPACK navigation data files and outputs formatted UTM time, date, latitude and longitude from the appropriate source GPS device. (2) driftlog_gui_v4.py - PYTHON script that uses the drift log created in the previous process step and the processed navigation file created from the parseHYPACKfolder_gui_sort_all.py script described above. The output of this is the location shapefile for the sea floor videos including a comma-delimited text file (CSV) with the fields field activity identifier, sampling station name, longitude, latitude epochtime (time in seconds since 1 Jan 1970), year and date/time in the format JJJ:HH:MM:SS where JJJ is the Julian day (sequential day number starting at 1 Jan of the survey year) and HH:MM:SS is UTC time in hours:minutes:seconds. Data sources used in this process:
    • RAW Hypack log files
    • drift log text file
    Data sources produced in this process:
    • Sea floor video location shapefile (polyline)
    • Sea floor video location comma-delimited text file (1-second navigation fixes)
    Date: May-2017 (process 5 of 6)
    XTools Pro (version 12.0) for ArcGIS (version 10.3.1) was used to reorganize add new fields (TABLE OPERATIONS - TABLE RESTRUCTURE) to the point shapefile including an attribute for the survey ID (CRUISE_ID), device used to collect the imagery and samples (DEVICE_ID), the survey vessel (VEHICLE_ID), the date of imagery collection (DATE) and the Camera used (CAMERA).
    Date: 08-Sep-2020 (process 6 of 6)
    Added keywords section with USGS persistent identifier as theme keyword. 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?
    Denny, Jane F., Schwab, William C., Baldwin, Wayne E., Bergeron, Emile, and Moore, Eric, 2015, High-resolution geophysical data collected offshore of Fire Island, New York in 2011, USGS Field Activity 2011-005-FA: data release DOI:10.5066/F75X2704, U.S. Geological Survey, Reston, VA.

    Online Links:

    Schwab, William C., Baldwin, Wayne E., Hapke, Cheryl J., Lentz, Erika E., Gayes, Paul T., Denny, Jane F., List, Jeffrey H., and Warner, John C., 2013, Geologic Evidence for Onshore Sediment Transport from the Inner Continental Shelf: Fire Island, New York: Journal of Coastal Research Volume 29, Issue 3, pp. 526-544., Coastal Education and Research Foundation, Inc., Florida, USA.

    Online Links:

    Foster, David S., Swift, Ann B., and Schwab, William C., 1999, Stratigraphic Framework Maps of the nearshore area of southern Long Island from Fire Island to Montauk Point, NY: Open-File Report 99-559, U.S. Geological Survey, Reston, VA.

    Online Links:

    Schwab, William C., Thieler, E. Robert, Denny, Jane F., Danforth, William W., and Hill, Jenna C., 2000, Seafloor sediment distribution off southern Long Island, New York: Open-File Report 00-243, U.S. Geological Survey, Reston, VA.

    Online Links:

    Schwab, W.C., Denny, J.F., and Baldwin, W.E., 2014, Maps Showing Bathymetry and Modern Sediment Thickness on the Inner Continental Shelf Offshore of Fire Island, New York, Pre-Hurricane Sandy: Open-File Report 2014-1203, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    This publication contains the backscatter image generated from data collected during WHCMSC field activity 2011-005-FA.
    Schwab, W.C., Baldwin, W.E., and Denny, J.F., 2014, Maps Showing the Change in Modern Sediment Thickness on the Inner Continental Shelf Offshore of Fire Island, New York, Between 1996-97 and 2011: Open-File Report 2014-1238, U.S. Geological Survey, Reston, VA.

    Online Links:

    Schwab, William C., Baldwin, Wayne E., Denny, Jane F., Hapke, Cheryl J., Gayes, Paul T., List, Jeffrey H., and Warner, John C., 2014, Modification of the Quaternary stratigraphic framework of the inner-continental shelf by Holocene marine transgression: An example offshore of Fire Island, New York: Marine Geology Volume 355, Elsevier B.V., Amsterdam, Netherlands.

    Online Links:

    Goff, J.A., Flood, R.D., Austin, J.A., Schwab, W.C., Christensen, B., Browne, C.M., Denny, J.F., and Baldwin, W.E., 2015, The impact of Hurricane Sandy on the shoreface and inner shelf of Fire Island, New York: Large bedform migration and limited erosion: Continental Shelf Research V. 98, pp. 13-25, Elsevier B.V., Amsterdam, Netherlands.

    Online Links:

    Denny, Jane F., Danforth, William W., Couch, Stephen, and Schwab, William C., 2015, Swath bathymetry collected offshore of Fire Island and western Long Island, New York in 2014, U.S. Geological Survey Field Activity 2014-072-FA: data release DOI:10.5066/F7C827BX, 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?
    The GoPro Hero 3+ black camera used on the modified SEABOSS acquired HD videos at 1920 x 1080 resolution.
  2. How accurate are the geographic locations?
    The original video files alone do not represent spatial data, however post-processing the video with the navigation data and survey notes provides the link to spatially locate the imagery. Navigation for survey 2014-009-FA used Real-Time Kinematic Global Positioning System (RTK-GPS) and Differential Global Positioning System(DGPS). The recorded position of each video is actually the position of the GPS antenna on the survey vessel, not the SEABOSS sampler. The SEABOSS was deployed approximately 5 meters astern of the RTK-GPS antenna for samples 1 through 19, and approximately 3 meters astern of the DGPS antenna for samples 20 through 25. Throughout the sampling the SEABOSS was deployed off the ship's A-frame on the stern of the ship. No layback or offset was applied to the recorded position. In addition to the +/- 3 to 5 meter offset the SEABOSS may drift away from the survey vessel when deployed to the seafloor. Based on the various sources for horizontal offsets, a conservative estimate the horizontal accuracy of the bottom photograph and video locations is 20-30 meters.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This dataset includes sea floor video in MP4 format and a trackline shapefile of the location of the ship for the duration of the video during USGS survey 2014-009-FA aboard the M/V Scarlett Isabella off of Fire Island, New York. Twenty-five sampling sites were occupied within the study area using a modified SEABOSS. Video imagery from the water column and on deck or otherwise not useful for seafloor characterization were deleted. A total of 27 video files are included in this dataset; sampling sites 21 and 23 have 2 video clips, as the sampler did not trigger on the 1st attempt and a second deployment of the sampler was completed at both sites. Video clips published here were from the GoPro Hero3+ Black.
  5. How consistent are the relationships among the observations, including topology?
    Gaps in sequential video filename numbers exist. Videos were clipped to the duration that the camera was within view of the sea floor. Many videos contain imagery of a significant amount of suspended sediment when the sampler hit the sea floor. These videos should be used in conjunction with other data such as co-located photographs and the analyses of co-located sediment sample which provide sediment grain-size data (see shapefile in this data release 2014-009-FA_samples.shp).

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 are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
  1. Who distributes the data set? (Distributor 1 of 1)
    Jane F. Denny
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, Massachusetts
    USA

    508-548-8700 x 2311 (voice)
    508-457-2310 (FAX)
    jdenny@usgs.gov
  2. What's the catalog number I need to order this data set? USGS data release 2014-009-FA contains sea floor video locations and sea floor video files (27 total video clips) of the sea floor collected from the area offshore of Fire Island (2014-009-FA_videos.zip). The zip file contains the following shapefile: 2014-009-FA_videos.shp (and other files associated with a shapefile) and sea floor video files from the GoPro Hero 3+ Black camera (in MP4 format). A browse graphic of video locations (2014-009-FA_videos_browse.jpg) and Federal Geographic Data Committee (FGDC) Content Standards for Digital Geospatial Metadata (CSDGM) metadata files (2014-009-FA_videos_meta.xml) in four standard formats are also included in the zip file.
  3. What legal disclaimers am I supposed to read?
    Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    This zip file contains data available in polyline shapefile format. The user must have software capable of reading shapefile format to use these data. A video viewer can be used to see the MP4 video files.

Who wrote the metadata?

Dates:
Last modified: 08-Sep-2020
Metadata author:
Seth Ackerman
U.S. Geological Survey
Geologist
384 Woods Hole Rd.
Woods Hole, MA
USA

508-548-8700 x2315 (voice)
508-457-2310 (FAX)
sackerman@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/field_activities/2014_009_fa/2014-009-FA_videos_meta.faq.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:20:15 2021