Survey lines along which SEABed Observation and Sampling System (SEABOSS) video were collected by the U.S. Geological Survey offshore of Massachusetts in Buzzards Bay and Vineyard Sound in September 2010 on the RV Connecticut (BBVS_SeabossTrackline.shp)

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Frequently anticipated questions:


What does this data set describe?

Title:
Survey lines along which SEABed Observation and Sampling System (SEABOSS) video were collected by the U.S. Geological Survey offshore of Massachusetts in Buzzards Bay and Vineyard Sound in September 2010 on the RV Connecticut (BBVS_SeabossTrackline.shp)
Abstract:
These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program. The primary objective of this program, initiated in 2003, is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of sea-floor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human effects. The project is focused on the inshore waters (5-30 meters deep) of Massachusetts. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html). This spatial dataset is from the study area located in Buzzards Bay and Vineyard Sound Massachusetts, and consists of ground-validation data which include the spatial extent of sea-floor sediment sample analyses, the location of sea-floor bottom photographs, and the tracklines along which sea-floor video was collected. These ground-validation (or ground-truth) data accompany a suite of high-resolution geophysical data, including swath bathymetry, sidescan-sonar backscatter intensity, and seismic-reflection data that were released in USGS Open File Reports 2012-1002 and 2012-1006. The sea-floor sampling data were collected during USGS survey 2010-005-FA in 2010 and cover more than 750 square kilometers of the inner continental shelf where the geophysical data were collected in 2009 and 2010.
  1. How might this data set be cited?
    U.S. Geological Survey, 2015, Survey lines along which SEABed Observation and Sampling System (SEABOSS) video were collected by the U.S. Geological Survey offshore of Massachusetts in Buzzards Bay and Vineyard Sound in September 2010 on the RV Connecticut (BBVS_SeabossTrackline.shp): Open-File Report 2014-1221, 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.

    Ackerman, Seth D., Pappal, Adrienne L., Huntley, Emily C., Blackwood, Dann S., and Schwab, William C., 2015, Geological Sampling Data and Benthic Biota Classification: Buzzards Bay and Vineyard Sound, Massachusetts: Open-File Report 2014-1221, U.S. Geological Survey, Reston, Virginia.

    Online Links:

    Other_Citation_Details:
    Suggested citation: Ackerman, S.D., Pappal, A.L., Huntley, E.C., Blackwood, D.S., and Schwab, W.C., 2015, Geological sampling data and benthic biota classification—Buzzards Bay and Vineyard Sound, Massachusetts: U.S. Geological Survey Open-File Report 2014–1221, 30 p., https://doi.org/10.3133/ofr20141221.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -71.096542
    East_Bounding_Coordinate: -70.457283
    North_Bounding_Coordinate: 41.649602
    South_Bounding_Coordinate: 41.267605
  3. What does it look like?
    https://pubs.usgs.gov/of/2014/1221/GIS/browse_jpg/big/BBVS_SeabossTrackline.jpg (JPEG)
    Thumbnail image of video tracklines
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 09-Sep-2010
    Ending_Date: 14-Sep-2010
    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):
      • String (315)
    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?
    BBVS_SeabossTrackline
    tracklines along which seafloor video and photographs were acquired (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.
    Linename
    This indicates the SEABOSS station number or SEABOSS trackline along which digital still photos and continuous bottom video were acquired. For some stations there is an "a" or "b" after the station number; in some cases this is becase a line was interuptted and was restarted and in some case it is because the DVD recorder splits the DVD video files at 15 minutes and begins a new DVD file. (Source: U.S. Geological Survey) Character string of width 10
    Length
    Length of SEABOSS video trackline in meters (UTM Zone 19N, WGS84) (Source: U.S. Geological Survey)
    Range of values
    Minimum:0.61
    Maximum:795.40
    Units:meters
    Resolution:0.01
    JulDay
    Julian day on which this video trackline was surveyed based on UTC time. Julian day is the integer number representing the interval of time in days since January 1 of the year of collection. (Source: U.S. Geological Survey)
    Range of values
    Minimum:252
    Maximum:257
    Date
    The date on which this video trackline was surveyed in the format MM/DD/YYYY. (Source: U.S. Geological Survey) Character string of width 10
    Year
    Calendar year data were collected (Source: U.S. Geological Survey) Character string of width 4
    StartTime
    Start time of the SEABOSS video drift in UTC (hh:mm:ss) (Source: U.S. Geological Survey) Character string of width 8
    EndTime
    End time of the SEABOSS video drift in UTC (hh:mm:ss) (Source: U.S. Geological Survey) Character string of width 8
    SurveyID
    Woods Hole Coastal and Marine Science Center field activity number in the format YYYY-XXXX-FA where YYYY is the year of the survey and XXXX is the survey number assigned to field activities with participation by scientists and staff from the USGS Wood Hole Coastal and Marine Science Center. (Source: USGS) Character string of width 12
    DeviceID
    Sampling device used to collect bottom video (Source: U.S. Geological Survey) Character string of width 18
    VehicleID
    Survey vessel name (Source: U.S. Geological Survey) Character string of width 25

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?
    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

Why was the data set created?

This data set includes the tracklines (the linear extent) where seafloor photographs and video were acquired with the large SEABed Observation and Sampling System (SEABOSS, SEABOSS Mark II configuration) during USGS survey 2010-005-FA, conducted September 9-14, 2010 aboard the R/V Connecticut offshore Massachusetts in Buzzards Bay and Vineyard Sound. This data set was collected to ground-truth (verify) the acoustic data sets that were acquired during NOAA hydrographic survey H11319 (2004) and USGS geophysical surveys 09002 (2009) and 10004 (2010). Bottom photographs were also taken at each station occupied by the SEABOSS (see shapefiles BBVS_BottomPhotos_wBio.shp). Physical sediment samples were also collected and analyzed in the sediment laboratory at the USGS Woods Hole Coastal and Marine Science Center (see shapefile BBVS_SedimentSamples.shp).

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: Sep-2010 (process 1 of 6)
    Three hundred and one target stations were occupied aboard the R/V Connecticut (USGS survey 2010-005-FA) with the large SEABOSS (Blackwood and Parolski, 2001) that was equipped with a Van Veen grab sampler, a digital still camera, and a video camera. Person who carried out this activity:
    Seth Ackerman
    U.S. Geological Survey
    Geologists
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2315 (voice)
    (508) 457-2310 (FAX)
    sackerman@usgs.gov
    Data sources produced in this process:
    • JPEG photographs and video recorded to DVD and Digital8 tape
    Date: Jan-2013 (process 2 of 6)
    DGPS navigation was logged through a Microsoft HyperTerminal (version 5.1) session on a HP laptop computer running Windows XP, SP2. Log files were saved for each sampling watch then reformatted into log files by Julian Day (e.g., JD252.txt) during post-processing. The AWK script awkseth.gpgga10005.sda was run on the group of Julian Day files creating a comma separated value (CSV) ASCII text file that parsed for the GPGGA navigation string (> awk -f awkseth.gpgga10005.sda JD*.txt > all_nav_10005.csv). The output file was then reformatted for the Python ground-truth toolset using the AWK script nav_time_reformat.awk (> awk -f nav_time_reformat.awk all_nav_10005.csv > 10005_UConn_ALLnav_final.csv), creating a final processed navigation file for the entire sampling survey (10005_UConn_ALLnav_final.csv). 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 used in this process:
    • HyperTerminal generated navigation files (JD25[2-7].txt)
    Data sources produced in this process:
    • GPGGA parsed navigation file (10005_UConn_ALLnav_final.csv)
    Date: May-2013 (process 3 of 6)
    A "drift log" was created by parsing and reformatting the manually kept Microsoft Excel survey log 10005_seaboss_log_FINAL_DRAFT_v2.xls for SEABOSS station number, date, and the start and end time of each video drift. This log was checked and modified as a number of stations had unreliable start and end times based on the manually kept log. To check and determine correct start and end times, the program ffmpeg was used to create JPEG images of the first frame from each video file to verify the video start time (the DVD video has an overlay of the GPS time, latitude and longitude, as well as a user-input station number) and then another ffmpeg output calculated the length of each DVD video segment. 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 used in this process:
    • Survey Log - 10005_seaboss_log_FINAL_DRAFT_v2.xls
    • DVD video files
    Data sources produced in this process:
    • drift_log_10005.csv
    Date: May-2013 (process 4 of 6)
    Create polyline shapefile joining the SEABOSS drift time log with the navigation based on matching date and time fields using ArcGIS 9.3 ArcToolbox tool "z_SEABOSStools_demo2012 - 4. Seaboss_Trackline_Creator" (which uses the Python script "seaboss_trackline_creator_v1_1.py; inputs: drift file - drift_log_10005.csv; navfile - 10005_UConn_ALLnav_final.csv; outfile shapefile - vid_track_10005_v2.shp). The Python script reads the start and end times from the drift log file (drift_log_10005.csv) and extracts the navigation points that fall within those start and end times, then it creates a polyline shapefile from the points with a unique line for each SEABOSS drift site. 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 used in this process:
    • drift_log_10005.csv
    • 10005_UConn_ALLnav_final.csv
    Data sources produced in this process:
    • vid_track_10005_v2.shp
    Date: Sep-2013 (process 5 of 6)
    XTools Pro (version 9.2) for ArcGIS desktop (version 10.1) was used to reorganize, delete unnecessary fields and add new fields to the polyline shapefile's attribute table (Table Operations - Table Restructure). Table attributes for the date ('Date'), survey ID ("SurveyID'), device used to collect the data ('DeviceID'), survey vessel name ('VehicleID') and imagelink ('ImageLink') were added and populated using the table editor in ArcMap (version 10.1). The length field ('Length') was populated using 'Calculate Geometry' (Property=Length; Use coordinate system of the data frame=WGS 1984 UTM Zone 19N; Unit=Meters), which can be accessed by right-clicking on the attribute field name in the table view. The attributes for Julian day ('JulDay'), year ('Year'), start time ('StartTime'), end time ('EndTime'), and SEABOSS station number ('Linename') were already populated. 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 used in this process:
    • vid_track_10005_v2.shp
    Data sources produced in this process:
    • BBVS_SeabossTrackline.shp
    Date: 25-Jul-2025 (process 6 of 6)
    The following edits were performed on this file: Modified the title to move filename to end of title; added the DOI link as the first link in the metadata file; added the suggested citation to the other citation details; added the DOI link as the first link in the larger work citation; fixed the publication date for both the datasets and larger work citation; removed Esri tags; rename “General” to “None” thesaurus name; added USGS Thesaurus terms; removed invalid ISO 19115 Topic Category terms; fixed all errors; replaced the distribution liability with an approved FSP statement; added a generic email with contact instructions for the metadata contact; added the metadata unique identifier (PID) in the thesaurus section; updated the metadata date. (20250725) Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    (508) 548-8700 x2251 (voice)
    (508) 457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?
    Blackwood, D., and Parolski, K., 2001, Seabed observation and sampling system: Sea Technology v. 42, no. 2, p. 39-43.

    Ackerman, Seth D., Andrews, Brian D., Foster, David S., Baldwin, Wayne E., and Schwab, William C., 2013, High-resolution geophysical data from the inner continental shelf - Buzzards Bay, Massachusetts: Open-File Report 2012-1002, U.S. Geological Survey, Reston, VA.

    Online Links:

    Andrews, Brian D., Ackerman, Seth D., Baldwin, Wayne E., Foster, David S., and Schwab, William C., 2013, High-Resolution geophysical data from the inner continental shelf at Vineyard Sound, Massachusetts: Open-File Report 2012-1006, 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?
  2. How accurate are the geographic locations?
    Navigation for survey 2010-005-FA used Differential Global Positioning System (GPS). The recorded position of each point along the video trackline 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 GPS antenna 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 +/-5 meter offset the SEABOSS may additionally drift away from the survey vessel when deployed to the seafloor. Based on the various sources for horizontal offsets, a conservative estimate of the horizontal accuracy of the video trackline 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 the video trackline locations for SEABOSS stations occupied during USGS survey 2010-005-FA aboard the R/V Connecticut within the Buzzards Bay and Vineyard Sound survey areas. Three-hundred and one stations were occupied within the study area during survey 2010-005-FA; some stations may have more than one video trackline and in these cases the tracklines are typically name "a" and "b" (e.g. Linename 40a and 40b exist for SEABOSS station 40). Sediment samples were obtained at 246 of these sites.
  5. How consistent are the relationships among the observations, including topology?
    Gaps in sequential video station numbers may exist. Some stations may have more than one video trackline.

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 source of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    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
  2. What's the catalog number I need to order this data set? Downloadable Data
  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 for other purposes, nor on all computer systems, 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?
    These data are available as a shapefile in Environmental Systems Research Institute (Esri) format. To utilize these data, the user must have software capable of viewing Esri shapefiles. The shapefile is also distributed in compressed format as one zip file. To utilize these data, the user must be able to uncompress the zip file.

Who wrote the metadata?

Dates:
Last modified: 25-Jul-2025
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)
whsc_data_contact@usgs.gov
Contact_Instructions:
The metadata contact email address is a generic address in the event the person is no longer with the U.S. Geological Survey.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

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