Locations of photographs acquired using a SEABed Observation and Sampling System (SEABOSS) within Barnegat Bay New Jersey by the U.S. Geological Survey in 2012, and 2013 (Esri point shapefile, Geographic, WGS 84)

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Frequently anticipated questions:


What does this data set describe?

Title:
Locations of photographs acquired using a SEABed Observation and Sampling System (SEABOSS) within Barnegat Bay New Jersey by the U.S. Geological Survey in 2012, and 2013 (Esri point shapefile, Geographic, WGS 84)
Abstract:
Water quality in the Barnegat Bay-Little Egg Harbor estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the U.S. Geological Survey (USGS)in partnership with the New Jersey Department of Environmental Protection. This narrow estuary is the drainage for the Barnegat Watershed and flushed by just three inlets connecting it to the Atlantic Ocean, is experiencing degraded water quality, algal blooms, loss of seagrass, and increases in oxygen-depletion events, seaweed, stinging nettles, and brown tide. The scale of the estuary and the scope of the problems within it necessitate a multidisciplinary approach that includes characterizing its physical characteristics (for example, depth, magnitude and direction of tidal currents, distribution of seafloor and subseafloor sediment) and modeling how the physical characteristics interact to affect the estuary's water quality. Scientists from USGS Coastal and Marine Geology Program offices in Woods Hole, Massachusetts, and St. Petersburg, Florida, began mapping the seafloor of the Barnegat Bay-Little Egg Harbor estuary in November 2011 and completed in September 2013. With funding from the New Jersey Department of Environmental Protection and logistical support from the USGS New Jersey Water Science Center, they collected data with a suite of geophysical tools, including swath bathymetric sonar for measuring seafloor depth, a sidescan sonar for collecting acoustic-backscatter data (which provides information about seafloor texture and sediment type), subbottom profiler for imaging sediment layers beneath the floor of the estuary, and sediment samples with bottom photographs for ground validation of the acoustic data. 2011-041-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-041-FA 2012-003-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2012-003-FA 2013-014-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2013-014-FA 2013-030-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2013-030-FA
  1. How might this data set be cited?
    U.S. Geological Survey, 2015, Locations of photographs acquired using a SEABed Observation and Sampling System (SEABOSS) within Barnegat Bay New Jersey by the U.S. Geological Survey in 2012, and 2013 (Esri point shapefile, Geographic, WGS 84): Data Series 937, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Andrews, Brian D., Miselis, Jennifer L., Danforth, William W., Irwin, Barry J., Worley, Charles R., Bergeron, Emile M., and Blackwood, Dann S., 2015, Marine geophysical data collected in a shallow back-barrier estuary: Barnegat Bay, New Jersey: Data Series 937, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -74.305617
    East_Bounding_Coordinate: -74.050009
    North_Bounding_Coordinate: 40.059391
    South_Bounding_Coordinate: 39.510267
  3. What does it look like?
    BarnBayBotPhotos.jpg (JPEG)
    Thumbnail image of locations of bottom photographs collected with Barnegat Bay, NJ. The file is located in the compressed zip file.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 10-Apr-2012
    Ending_Date: 18-Sep-2013
    Currentness_Reference:
    Ground condition of SEABOSS sampling dates at the end of three surveys, 20120410-20120412, 20130328-20130329, 20130918-20130918. No photographs were collected during 2011-041-FA.
  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 (594)
    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?
    BarnBayBotPhotos
    Locations of bottom photographs (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.
    Latitude
    The latitude coordinate of the photo location (Source: USGS)
    Range of values
    Minimum:39.510267
    Maximum:40.059384
    Units:decimal degrees
    Resolution:0.000001
    Longitude
    The longitude coordinate of the photo location (Source: USGS)
    Range of values
    Minimum:-74.305617
    Maximum:-74.050009
    Units:decimal degrees
    Resolution:0.000001
    Station
    The target station number of the photograph location (Source: USGS)
    Range of values
    Minimum:1
    Maximum:85
    Units:station number
    Resolution:1
    PhotoName
    The file name of the JPG photograph. (Source: USGS) Coordinates defining the features.
    Time
    Time in Universal Coordinated Time (UTC) when photograph as taken in the format HH:MM:SS (Source: USGS)
    Range of values
    Minimum:11:35:51
    Maximum:19:39:47
    Units:seconds
    Date_
    Calendar date when photograph was taken. (Source: USGS)
    Range of values
    Minimum:4/10/2012
    Maximum:9/18/2013
    Units:days
    JulianDay
    The Julian Day the photograph was taken where Julian day is an integer number representing the interval of time in days since January 1 of the year of collection (Source: USGS)
    Range of values
    Minimum:87
    Maximum:261
    Hyperlink
    The pathway used to hyperlink the photographs using ArcGIS. (Source: USGS) 2012-003-FA, 2013-014-FA, 2013-030-FA
    Survey
    Woods Hole Coastal and Marine Science Center Field Activity Number. For example, the Field Activity number 2011-041-FA:where the first 4 characters are the year of the survey (2011), followed by the sequential number of the survey (041), followed by "FA" for Field Activity. (Source: USGS) 2012-003-FA, 2013-014-FA, 2013-030-FA
    Entity_and_Attribute_Overview:
    The "Hyperlink" attribute of this shapefile provides the location of each photograph for each feature in the shapefile. Refer to the Data Catalog in this report for more details.
    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?
    Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  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 shapefile is to record the geographic locations where bottom photographs were acquired within Barnegat Bay, New Jersey to ground-validate the marine geophysical (acoustic) data. In addition, the "Hyperlink" attribute in this shapefile records the pathway to the bottom photographs in JPEG format for each record in the shapefile.

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-2013 (process 1 of 7)
    Step 1: COLLECT PHOTOGRAPHS One-hundred and eighty six target stations were occupied in Barnegat Bay with the mini SEABOSS equipped with a Van Veen grab sampler, a digital still camera, and a video camera. JPEG photographs were acquired at user-define locations while drifting with wind and tide at each station. Photographs were collected in 2012 and 2013. 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:
    • JPEG Photographs
    Date: Sep-2013 (process 2 of 7)
    STEP 2: PROCESS NAVIGATION 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 day 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 the GPGGA navigation string (> awk -f awkseth.gpgga"SurveyName".sda JD*.txt > all_nav_"SurveyName".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_"SurveyName".csv > "SurveyName"_ALLnav_final.csv), creating a final processed navigation file for the entire sampling survey. Navigation was processed during each survey in 2012 and 2013. 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
    Date: Mar-2014 (process 3 of 7)
    STEP 3: EXTRACT TIME FROM PHOTOGRAPHS Extracted time from the "Date Picture Taken" in the Exchangeable Image File (EXIF) format header of the quality JPEG bottom photographs using ArcGIS 9.3 ArcToolbox tool "GeoTools JPG Header Tool - SDA Feb05" (which uses the Python (v2.5) script "sda_vexiftool_mod12.py (v.Jan18.2007)). 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:
    • JPEG Photographs
    Date: Mar-2014 (process 4 of 7)
    STEP 4: CREATE SHAPEFILE Create Esri shapefile joining the bottom photograph name with the navigation based on matching date and time fields using ArcGIS 9.3 ArcToolbox tool "GeoTools Hotlink Tool - SDA Feb05" (which uses the Python (v2.5) script "sda_hotlink_5.py (v.Oct10.2007)). 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 produced in this process:
    • "SurveyName"SEABOSSPhotos.shp
    Date: 20-Jul-2018 (process 5 of 7)
    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: 15-Nov-2019 (process 6 of 7)
    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 7 of 7)
    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.


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?
    The JPEG photographs alone do not represent spatial data, however this shapefile "BarnBayBotPhotos" provides the geographic location of each photographs using the navigation data from each survey. The recorded position of each photo is actually the position of the GPS antenna on R/V Rafael, not the camera mounted on the SEABOSS. The SEABOSS was deployed approximately 1 meter astern of the GPS antenna off the starboard side of the R/V Rafael. No layback or offset was applied to the recorded position. In addition to the +/-1 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 and the shallow depths of deployment, a conservative estimate the horizontal accuracy of the bottom photograph locations is 5 meters.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This data set includes 594 of bottom photographs collected during three separate SEABOSS surveys in Barnegat Bay, New Jersey (2012-003-FA, 2013-013-FA, and 2013-030-FA). Photographs of poor quality or unusable are not included.
  5. How consistent are the relationships among the observations, including topology?
    Gaps exist in sequential photograph numbers because photographs taken on deck, of poor quality, or accidently triggered were deleted.

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: none
  1. Who distributes the data set? (Distributor 1 of 1)
    Brian Andrews
    U.S. Geological Survey
    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? BarnBayBotPhotos.zip: contains the BarnBayBotPhotos.shp and the associated shapefiles, BarnBayBotPhotos.jpg browse graphic, and the associated FGDC metadata
  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 shapefile format. The user must have software capable of uncompressing the WinZip file and displaying the shapefile.

Who wrote the metadata?

Dates:
Last modified: 08-Sep-2020
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)
bandrews@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/data_series/DS-937/BarnBayBotPhotos_locs.faq.html>
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