Survey lines along which SEABed Observation and Sampling System (SEABOSS) data were collected by the U.S. Geological Survey within the Northern Cape Cod Bay survey area (CCB_SeabossTrackline Esri shapefile, Geographic, WGS84).

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Frequently anticipated questions:

What does this data set describe?

Title:
Survey lines along which SEABed Observation and Sampling System (SEABOSS) data were collected by the U.S. Geological Survey within the Northern Cape Cod Bay survey area (CCB_SeabossTrackline Esri shapefile, Geographic, WGS84).
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, Woods Hole Coastal and Marine Science Center (WHCMSC). Initiated in 2003, the primary objective of this program 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 impacts. The project is focused on the inshore waters of coastal Massachusetts, primarily in water depths of 3-30 meters deep. 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). The data collected in the study area located in Northern Cape Cod Bay Massachusetts includes high-resolution geophysics (bathymetry, backscatter intensity, and seismic reflection), and ground validation (sediment samples, video tracklines, and bottom photographs). The data were collected during five separate surveys conducted between 2006 and 2008 and cover 480 square kilometers of the inner continental shelf. More information about the individual USGS surveys conducted as part of the northern Cape Cod Bay project can be found on the Woods Hole Coastal and Marine Science Center Field Activity webpage: 06012: http://quashnet.er.usgs.gov/data/2006/06012/ 07001: http://quashnet.er.usgs.gov/data/2007/07001/ 07002: http://quashnet.er.usgs.gov/data/2007/07002/ 07003: http://quashnet.er.usgs.gov/data/2007/07003/ 08002: http://quashnet.er.usgs.gov/data/2008/08002/
  1. How might this data set be cited?
    U.S. Geological Survey, 2010, Survey lines along which SEABed Observation and Sampling System (SEABOSS) data were collected by the U.S. Geological Survey within the Northern Cape Cod Bay survey area (CCB_SeabossTrackline Esri shapefile, Geographic, WGS84).: Open-File Report 2010-1006, 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.

    Andrews, Brian D., Ackerman, Seth D., Baldwin, Wayne E., and Barnhardt, Walter A., 2010, Geophysical and Sampling Data from the Inner Continental Shelf: Northern Cape Cod Bay, Massachusetts.: Open-File Report 2010-1006, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -70.632917
    East_Bounding_Coordinate: -70.189835
    North_Bounding_Coordinate: 42.086826
    South_Bounding_Coordinate: 41.936435
  3. What does it look like?
    http://pubs.usgs.gov/of/2010/1006/GIS/browse_jpg/CCB_SeabossTrackline.jpg (JPEG)
    Thumbnail image of video tracklines
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 07-Sep-2007
    Ending_Date: 11-Sep-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):
      • String (109)
    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?
    CCB_SeabossTrackline
    SEABOSS Trackline (Source: USGS)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    JULDAY
    Julian day photograph was acquired based on UTC time. (Source: U.S. Geological Survey) Character string of width 4
    Length
    Length of SEABOSS video trackline in meters (UTM Zone 19N, WGS84) (Source: U.S. Geological Survey)
    Range of values
    Minimum:1.57
    Maximum:579.34
    Units:meters
    Resolution:0.01
    LINENAME
    This indicates the SEABOSS station number or SEABOSS trackline along which digital still photos and continuous bottom video were acquired. (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
    WHCMSC field activity number (Source: USGS) Character string of width 10
    DEVICEID
    Sampling device used to collect bottom video (Source: USGS) Character string of width 25
    VEHICLEID
    Survey vessel name (Source: USGS) 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?
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov

Why was the data set created?

The purpose of this dataset is to record the trackline navigation along which bottom video was recorded and using the the large SEABed Observation and Sampling System (SEABOSS) during USGS survey 07003, conducted September 7-11, 2007 aboard the R/V Connecticut offshore Massachusetts in the Northern Cape Cod Bay survey area. This data set was collected to ground-truth (verify) the acoustic data sets that were acquired during USGS geophysical surveys 06012 (2006), 07001 (2007), 07002 (2007), and 08002 (2008). High-resolution digital photographs of the seafloor were also taken during the video drift (see shapefile CCB_BottomPhotos.shp).

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 1)
    Information unavailable from original metadata., unknown, Information unavailable from original metadata..

    Other_Citation_Details:
    The orignal metadata only had source information time period of content. In order to pass the metadata harvester, the rest of the required source information fields were populated.
    Type_of_Source_Media: Information unavailable from original metadata.
    Source_Contribution: Information unavailable from original metadata.
  2. How were the data generated, processed, and modified?
    Date: Sep-2007 (process 1 of 10)
    Target stations were occupied aboard the R/V Connecticut (USGS survey 07003) 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. One-hundred nine sites are within the Northern Cape Cod Bay survey area. Bottom video was recorded directly to DVD-video disc. 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:
    • DVD seafloor videos
    Date: Jan-2009 (process 2 of 10)
    Differential Global Positioning System (DGPS) navigation was logged through a Microsoft HyperTerminal (version 5.1) session on a Dell Latitude D820 laptop computer running Windows XP, SP2. Log files were saved for each sampling watch then reformatted into log files by Julian Day (e.g. nav_sda.251) during post-processing. The AWK script HT_doGPGGA.awk was modified accordingly for each Julian Day and run (using GNU AWK version 3.1.6) on each Julian Day file creating a comma separated value (CSV) ASCII text file to parse for the GPGGA navigation string and reformatted the file for input to the Python ground-truth toolset. The individual Julian Day navigation files were concatenated into a single navigation file for the entire sampling survey (07003_allnav_gpgga_formatted.csv). 
    	cat gpgga_out* > 07003_allnav_gpgga_formatted.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 (090807_day_watch.txt, 090907_night_watch.txt, etc.)
    Data sources produced in this process:
    • GPGGA parsed navigation files (gpgga_out.25[0-4])
    • GPGGA parsed navigation file (07003_allnav_gpgga_formatted.csv)
    Date: 30-Nov-2009 (process 3 of 10)
    Parsed and reformatted the manually kept Microsoft Excel 2003 survey log CONN07003_sedcruise.xls for SEABOSS station number, date, and the start and end time (in UTC) of each SEABOSS drift. 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 - CONN07003_sedcruise.xls
    Data sources produced in this process:
    • drifttime_07003_CCBay.csv
    Date: 14-Dec-2009 (process 4 of 10)
    Create ESRI polyline shapefile joining the SEABOSS drift time log with the navigation based on matching date and time fields using ArcGIS 9.3 ArcToolbox tool "USGS GTC Tools v2008 - Drift_nav - Vee2008" (which uses the Python script "Script1_startend_9_2008proj.py (v.Oct 1, 2008) and Python version 2.5; inputs: drift file - drifttime_07003_CCBay.csv outfile - TEMP_drifttime_07003_CCBay.shp template- template_geo.shp navfile - 07003_allnav_gpgga_formatted.csv). The Python script reads the start and end times from the drift log file (drifttime_07003_CCBay.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:
    • 07003_allnav_gpgga_formatted.csv
    • drifttime_07003_CCBay.csv
    Data sources produced in this process:
    • TEMP_drifttime_07003_CCBay.shp
    Date: 18-Dec-2009 (process 5 of 10)
    XTools Pro (version 5.3.0) for ArcGIS desktop was used to reorganize, delete unnecessary fields and add new fields to the point shapefile's attribute table (Table Operations - Table Restructure). Table attributes for the survey ID ("SURVEYID'), device used to collect the data ('DEVICEID'), survey vessel name ('VEHICLEID') and were added and populated using the table editor in ArcMap (version 9.3). 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'), 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:
    • TEMP_drifttime_07003_CCBay.shp
    Data sources produced in this process:
    • CCB_SeabossTrackline.shp
    Date: 07-Jan-2010 (process 6 of 10)
    Export tracklines in Cape Cod Bay survey area: Manually selected the 109 tracklines that are within the northern Cape Cod Bay survey area using ArcMap (ver 9.3) "Select Tool" and saved as a separate shapefile. Person who carried out this activity:
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov
    Data sources used in this process:
    • TEM_drifttime_07003_CCBay.shp
    Data sources produced in this process:
    • CCB_SeabossTrackline.shp
    Date: 20-Nov-2015 (process 7 of 10)
    Edits to the metadata were made to fix any errors that MP v 2.9.30 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The orignal metadata only had source information time period of content. In order to pass the metadata harvester, the rest of the required source information fields were populated. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 20-Jul-2018 (process 8 of 10)
    USGS Thesaurus keywords added to the keyword section. 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
    Date: 18-Nov-2019 (process 9 of 10)
    Crossref DOI link was added as the first link in the metadata. 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
    Date: 08-Sep-2020 (process 10 of 10)
    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?
    Blackwood, D., and Parolski, K., 2001, Seabed observation and sampling system: Sea Technology v. 42, no. 2, p. 39-43.

    Barnhardt, Walter A., Andrews, Brian D., and Butman, Bradford, 2006, High-Resolution Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts: Open-File Report 2005-1293, U.S. Geological Survey, Reston, VA.

    Online Links:

    Ackerman, Seth D., Butman, Bradford, Barnhardt, Walter A., Danforth, William W., and Crocker, James M., 2006, High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts: Open-File Report 2006-1008, U.S. Geological Survey, Reston, VA.

    Online Links:

    Barnhardt, Walter A., Andrews, Brian D., Ackerman, Seth D., Baldwin, Wayne E., and Hein, Christopher J., 2009, High-Resolution Geological Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts: Open-File Report 2007-1373, U.S. Geological Survey, Reston, VA.

    Online Links:

    Barnhardt, Walter A., Ackerman, Seth D., Andrews, Brian D., and Baldwin, Wayne E., 2010, Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts: Open-File Report 2009-1072, 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 07003 used differential Global Positioning System (GPS). The recorded position of each node along the SEABOSS 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 J-frame on the starboard side. No layback or offset was applied to the recorded position. In addition to the 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 SEABOSS trackline is 20-30 meters.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    A total of 184 sampling sites were occupied during survey 07003 covering both the Duxbury to Hull and Cape Cod Bay survey areas. Only the 109 sampling sites within Cape Cod Bay survey area are included in this spatial dataset. The SEABOSS video tracklines that are not included in this report are from sites north of Brant Rock, Massachusetts and have been published in a previous data release (Barnhardt and other 2010) focused on the Duxbury to Hull survey area. The length of the trackline represents the distance along the drift that the bottom was in view on the monitor aboard the ship. Video may not have been recorded at each station or for the full duration of the SEABOSS drift. The tracklines do not represent video of the water column during deployment or retrieval. Stations represented by SEABOSS tracklines 41-60 and 71-76 were rapid deployment sites where no video was collected. Only bottom photographs and sediment samples (when possible) were collected at these sites.
  5. How consistent are the relationships among the observations, including topology?
    Trackline data from all SEABOSS transects in the Northern Cape Cod Bay survey area are included in this shapefile. Gaps in sequential SEABOSS station numbers may exist.

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 (USGS) as the source of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    Brian Andrews
    U.S. Geological Survey, Woods Hole Science Center
    Geographer
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    bandrews@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?
    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 Environmental Systems Research Institute (ESRI) shapefile format. The user must have software capable of uncompressing the WinZip file and displaying the shapefile. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 18-Mar-2024
Metadata author:
Brian Andrews
U.S. Geological Survey
Geographer
384 Woods Hole Rd.
Woods Hole, MA
USA

508-548-8700 x2348 (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 USGS. (updated on 20240318)
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2010-1006/CCB_SeabossTrackline.shp.faq.html>
Generated by mp version 2.9.51 on Mon Mar 25 16:05:29 2024