Shorelines Derived from Continuous Video-Imagery at the NASA-Kennedy Space Center, Florida From August 2011 to July 2012

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Frequently anticipated questions:

What does this data set describe?

Title:
Shorelines Derived from Continuous Video-Imagery at the NASA-Kennedy Space Center, Florida From August 2011 to July 2012
Abstract:
In 2010, a video camera was installed near the northern boundary of the National Aeronautics and Space Administration-Kennedy Space Center (NASA-KSC) property along the Atlantic coast of Florida. A region extending 1 kilometer (km) to the south of the camera was established as the region of interest for the video image observations. During every daylight hour of camera operation from August 8, 2011 to July 24, 2012, a time exposure (timex) image product was created by averaging pixel color intensity for all frames collected during a 10-minute video at 2 frames per second (hertz, Hz). One timex image per day was used for analysis. The timex selected for each day was the product that was created when the tide level was closest to the Mean High Water (MHW) at the study site. Based on observed water levels from a nearby National Oceanic and Atmospheric Administration (NOAA) station, the MHW was determined to be 0.23 meters (m) above the North American Vertical Datum of 1988 (NAVD88) (NOAA, 2018). The shoreline was manually identified as the wet-dry line within the region of interest of each available timex product. Each day’s MHW timex product was rectified to a horizontal map and converted to local and world coordinate systems, with the camera centered at the origin, using the established photogrammetric techniques outlined in Holland and others (1997). However, timex products were not available for about half of this timeframe due to camera malfunctions, adverse weather conditions (for example, fog), and/or a lack of daylight during the timing of MHW. The average gap between observations is 2 days, with the largest gap being 12 days. Please carefully review the metadata for more information.
Supplemental_Information:
The shoreline data included in this data release. NASA-KSC_shorelines.txt is provided in the World Geodetic System of 1984 Universal Transverse Mercator 17R (WGS84 UTM 17R) coordinate system and grid zone. For more information about grid zones, please refer to 'Step 3' of the process steps in this metadata record. FANs are unique identifiers assigned by the U.S. Geological Survey (USGS) to provide more information about the activities conducted in the field for a study. Please visit the Coastal and Marine Geoscience Data System (CMGDS) field activity webpage for more information about each FAN related to this dataset. The installation of the video camera is detailed in field activity 10DVS01, https://cmgds.marine.usgs.gov/fan_info.php?fan=10DVS01. Maintenance and testing of the video camera is detailed in field activity 10DVS03, https://cmgds.marine.usgs.gov/fan_info.php?fan=10DVS03.
  1. How might this data set be cited?
    Williams, Breanna N., Schreppel, Heather A., and Plant, Nathaniel G., 20210826, Shorelines Derived from Continuous Video-Imagery at the NASA-Kennedy Space Center, Florida From August 2011 to July 2012:.

    This is part of the following larger work.

    Williams, Breanna N., Schreppel, Heather A., and Plant, Nathaniel G., 20210826, Shorelines Derived from Continuous Video-Imagery at the NASA-Kennedy Space Center, Florida From August 2011 to July 2012: U.S. Geological Survey data release doi:10.5066/F78050QD, U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -80.622551
    East_Bounding_Coordinate: -80.617723
    North_Bounding_Coordinate: 28.64218
    South_Bounding_Coordinate: 28.636081
  3. What does it look like?
    1271944801.Thu.Apr.22_14_00_01.GMT.2010.nasadvt1.c1.timex.jpg (JPG)
    Joint Photographic Experts Group (JPG) image of a timex shoreline. This image and other supporting files can be found in SupplementalFiles.zip of the Williams and others (2021) data release.
    1271944801.Thu.Apr.22_14_00_01.GMT.2010.nasadvt1.c1.plantimex.jpg (JPG)
    Georeferenced image of a timex shoreline. The authors of this data release recommend opening this image in a geographic information system (GIS) program such as Esri's desktop applications (ArcMap or ArcGIS Pro). 1271944801.Thu.Apr.22_14_00_01.GMT.2010.nasadvt1.c1.plantimex.jgw and 1271944801.Thu.Apr.22_14_00_01.GMT.2010.nasadvt1.c1.plantimex.jpg.aux are accompanying files to the image and must be contained in the same folder for it to open correctly. 1271944801.Thu.Apr.22_14_00_01.GMT.2010.nasadvt1.c1.plantimex.jgw is a world file that defines the geographic coordinates of the timex image. 1271944801.Thu.Apr.22_14_00_01.GMT.2010.nasadvt1.c1.plantimex.jpg.aux is an Extensible Markup Language (.xml) file that defines a world coordinate system to the timex image. The coordinate system used for this timex image is WGS84 UTM 17N. Please note that this is georeferenced timex image is in a different grid zone than the shoreline data (.txt). Please read 'Step 3' in the processing steps for more information about the different grid zones.
    CameraSetupFront.jpg (JPG)
    Image of the front of the Prosilica video camera setup near the northern boundary of the NASA-KSC in 2010.
    CameraSetupBack.jpg (JPG)
    Image of the back of the Prosilica video camera setup near the northern boundary of the NASA-KSC in 2010.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 08-Aug-2011
    Ending_Date: 24-Jul-2012
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: tabular digital data
  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):
      • Point (28946)
    2. What coordinate system is used to represent geographic features?
  7. How does the data set describe geographic features?
    NASA-KSC_shorelines.txt
    Comma-separated text (.txt) of temporal shoreline positions derived from the timex image products at NASA-KSC. Any gaps that exist in the data were due to camera malfunctions, adverse weather conditions, and/or a lack of daylight during the timing of MHW. (Source: USGS)
    date
    The date and time of the captured timex image product. (Source: USGS)
    Range of values
    Minimum:20110808.190000
    Maximum:20120724.170000
    Units:Date and time (YYYYMMDD.HHMMSS)
    UTM_17R_x_meters
    Shoreline position in WGS84 UTM 17R easting coordinates. Please see the ‘Step 3’ process step for details about the conversion from the local coordinate system to WGS84 UTM 17R. (Source: USGS)
    Range of values
    Minimum:536889.5519
    Maximum:537363.4595
    Units:meters (m)
    UTM_17R_y_meters
    Shoreline position in WGS84 UTM 17R northing coordinates. Please see the ‘Step 3’ process step for details about the conversion from the local coordinate system to WGS84 UTM 17R. (Source: USGS)
    Range of values
    Minimum:3167727.236
    Maximum:3168401.508
    Units:meters (m)
    local_y_meters
    The alongshore coordinates in a local coordinate system. (Source: USGS)
    Range of values
    Minimum:-1000
    Maximum:-200
    Units:meters (m)
    local_x_meters
    Arbitrary cross-shore reference shoreline position from a local coordinate system. (Source: USGS)
    Range of values
    Minimum:34.62348274
    Maximum:83.20614570
    Units:meters (m)
    tide_navd88_meters
    The tide level at the time of timex image product capture, georeferenced to the North American Vertical Datum of 1988 (NAVD88). The timex image product was selected in accordance with the average MHW at the study site (0.23 m) (NOAA, 2018). (Source: USGS, NOAA)
    Range of values
    Minimum:-0.074
    Maximum:0.315
    Units:meters (m)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Breanna N. Williams
    • Heather A. Schreppel
    • Nathaniel G. Plant
  2. Who also contributed to the data set?
    Data collection was made possible in part by collaborators at the University of Florida and staff at NASA that helped install, operate, and maintain the camera during data collection.
  3. To whom should users address questions about the data?
    Nathaniel G. Plant
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    Research Oceanographer
    600 4th Street South
    St. Petersburg, FL
    US

    727-502-8072 (voice)
    nplant@usgs.gov

Why was the data set created?

Quantification of shoreline variability across various timescales (daily to decadal) is critical for coastal management response to storms as well as long-term shoreline change. The purpose of this data set was to record daily shoreline positions at NASA-KSC using continuous video-imagery. This dataset is referenced in an associated publication (Conlin and others, 2019) that analyzed shoreline variability over daily to decadal timescales at NASA-KSC to quantify and compare variability and associated drivers at each timescale.

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: 20-Apr-2010 (process 1 of 4)
    Step 1, camera installation: A video camera (Prosilica Digital Camera GC2450 model number: 02-2171A, 2448x2050, Gig-E, 2/3 inch CCD, equipped with a Fujinon HF16HA-1B lens) was installed inside a protective case at the Eagle 4 building near the northern boundary of the NASA-KSC (28.643436 latitude, -80.624078 longitude). The case was used to protect the camera from potentially destructive environmental conditions (for example, excessive humidity, extreme weather events, etc.). The video camera was installed at an elevation of 13.5 m and was secured onto a rail of the Eagle 4 guard tower using stainless hose clamps. See CameraSetupFront.jpg and CameraSetupBack.jpg in the SupplementalFiles.zip for photos of the camera setup. A region extending 1-km to the south of the camera was established as the region of interest for the video image observations. The ground footprint of one pixel at the edge of this range is 1.2 m in the cross-shore direction and 10.0 m in the longshore, with pixel footprint decreasing with distance closer to the camera (Holman and others, 2007). Pixel footprints beyond this range were deemed too large to resolve shoreline features of interest, thus constraining the region of interest. Person who carried out this activity:
    Nathaniel G. Plant
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    Research Oceanographer
    600 4th Street South
    St. Petersburg, FL
    US

    727-502-8072 (voice)
    nplant@usgs.gov
    Date: 24-Jul-2012 (process 2 of 4)
    Step 2, timex image product collection: During every daylight hour of camera operation, a timex image product was created by averaging pixel color intensity for all frames collected during a 10-minute time interval at 2 Hz. The camera collected 1200 frames every hour. The raw imagery, saved in uncompressed Tag Image File Format (TIFF), is unavailable in this data release due to sheer data volume and network restrictions. One timex image per day was used for analysis. For an example of a timex image, see 1271944801.Thu.Apr.22_14_00_01.GMT.2010.nasadvt1.c1.timex.jpg within SupplementalFiles.zip. The timex selected for each day was the product that was created when the tide level was closest to MHW at this location (0.23 m), based on observed water levels from a nearby NOAA station (NOAA, 2018). This was done to introduce consistency with the GPS-derived shorelines, which were extracted as the MHW contour. Each day’s MHW timex product was rectified to a horizontal map and converted to a local coordinate system, with the camera centered at the origin, using the established photogrammetric techniques outlined in Holland and others (1997). An example of the timex product converted to a world coordinate system (WGS84 UTM 17N) is available in the SupplementalFiles.zip as 1271944801.Thu.Apr.22_14_00_01.GMT.2010.nasadvt1.c1.plantimex.jpg. Additional timex products can be obtained through official request to the process contact below. Person who carried out this activity:
    Nathaniel G. Plant
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    Research Oceanographer
    600 4th Street South
    St. Petersburg, FL
    US

    727-502-8072 (voice)
    nplant@usgs.gov
    Date: 24-Jul-2012 (process 3 of 4)
    Step 3, converting from the local coordinate system to a world coordinate system: The local coordinate system was converted to the World Geodetic System of 1984 Universal Transverse Mercator 17R (WGS84 UTM 17R) coordinate system using the following method in Matlab R2010a: - param.x0 = 536739.921; % UTM coordinate of local x0, m - param.y0 = 3168540.207; % UTM coordinate of local y0, m - param.rx = -33.6777; % deg rotation - param.UTM ='17R'; % UTM zone [la,lo,utmz] = ll2utm(-80.640365, 28.585132,23) Please note that WGS84 UTM 17R is a distinct grid zone within the Universal Transverse Mercator coordinate system. Each UTM zone is segmented into 20 latitude bands. Each latitude band is 8 degrees high, and is lettered starting from the letter "C" at 80 degrees South. Each zone is lettered onward in the alphabet in 8 degree increments (omitting letters "I" and "O"). The combination of a zone and a latitude band defines a grid zone. In a grid zone, the zone number is written first (for example, 17), followed by the latitude band (for example, R). The grid zone serves to delineate irregular UTM zone boundaries and enhance positional accuracy. For the shoreline data (.txt) included in this data release (Williams and others, 2021), all data points were converted into UTM grid zone 17R from the local coordinate system using the conversion above. For more information on UTM grid zones, please refer to https://apps.dtic.mil/sti/pdfs/ADA247651.pdf. When trying to convert the shoreline data (NASA-KSC_shorelines.txt) into a GIS file (such as a shapefile [.shp]), please note that the data is projected to grid zone WGS84 UTM 17R. Most GIS programs (for example, Esri's ArcGIS desktop applications) will only allow users to project data into grid zone UTM 17N. The re-projection of the data in a GIS program from WGS84 UTM 17R to WGS84 UTM 17N should not produce any significant positional inaccuracies to the data. Person who carried out this activity:
    Nathaniel G. Plant
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    Research Oceanographer
    600 4th Street South
    St. Petersburg, FL
    US

    727-502-8072 (voice)
    nplant@usgs.gov
    Date: 18-Sep-2018 (process 4 of 4)
    Step 4, deriving shoreline position: The shoreline was manually identified as the wet-dry line within the region of interest of each available timex product between August 8, 2011 to July 24, 2012 (352 days). However, timex products were not available for roughly half of this timeframe due to camera malfunctions, adverse weather conditions, and/or a lack of daylight during the timing of MHW. Data gaps were filled by linear interpolation of shoreline positions at each alongshore position using methods described in Fairley and others (2009), implemented in Matlab (R2017) and written to text files with at least 3 decimal place precision for the horizontal data. For more information on this method, please see Fairley and others (2009). Person who carried out this activity:
    Nathaniel G. Plant
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    Research Oceanographer
    600 4th Street South
    St. Petersburg, FL
    US

    727-502-8072 (voice)
    nplant@usgs.gov
  3. What similar or related data should the user be aware of?
    Conlin, M.P., Adams, P.N., Plant, N.G., Jaeger, J.M., and Mackenzie, R., 2019, Daily to decadal variability of beach morphology at NASA-Kennedy Space Center: storm influences across timescales: Coastal Sediments 2019 n/a.

    Online Links:

    Other_Citation_Details: Pages 2268-2281
    Holland, K.T., Holman, R.A., Lippmann, T.C., Stanley, J., and Plant, N.G., 1997, Practical use of video imagery in nearshore oceanographic field studies: IEEE Journal of Oceanic Engineering Volume 22, Issue 1.

    Online Links:

    Other_Citation_Details: Pages 81-92
    National Oceanic and Atmospheric Administration (NOAA), 2018, Datums for 8721604, Trident Pier, Port Canaveral FL: Center for Operational Oceanographic Products and Services, Online.

    Online Links:

    Holman, R.A. and Stanley, J., 2007, The history and technical capabilities of Argus: Coastal Engineering Volume 54, Issues 6-7.

    Online Links:

    Other_Citation_Details: Pages 477-491
    Fairley, I., Davidson, M., Kingston, K., Dolphin, T., and Phillips, R., 2009, Empirical orthogonal function analysis of shoreline changes behind two different designs of detached breakwaters: Coastal Engineering Volume 56, Issues 11-12.

    Online Links:

    Other_Citation_Details: Pages 1097-1108

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

  1. How well have the observations been checked?
    No formal attribute accuracy tests were conducted.
  2. How accurate are the geographic locations?
    Each day’s MHW timex product was rectified to a horizontal map and converted to a local coordinate system (Conlin and others, 2019), with the camera centered at the origin, using the established photogrammetric techniques outlined in Holland and others (1997). Please see ‘Step 3’ of the process steps for the conversion from a local coordinate system to a world coordinate system (WGS84 UTM 17R). The ground footprint of one pixel at the edge of the study area is 1.2 m in the cross-shore direction and 10.0 m in the longshore direction (Holman and others, 2007).
  3. How accurate are the heights or depths?
    The timex selected for each day was the product that was created when the tide level was closest to Mean High Water (MHW) at this location (0.23 m above NAVD88), based on observed water levels from a nearby station (NOAA, 2018).
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract. Timex products were not available for about half of the August 8, 2011 to July 24, 2012 timeframe due to camera malfunctions, adverse weather conditions (for example, fog), and/or a lack of daylight during the timing of MHW. The average gap between observations is 2 days, with the largest gap being 12 days. Users are advised to read the rest of the metadata record carefully for additional details. For additional information about the positional accuracies and QA/QC methods employed on this dataset, please refer to Holland and others (1997) and Holman and Stanley (2007).
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted.

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)
    Nathaniel G. Plant
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    Research Oceanographer
    600 4th Street South
    St. Petersburg, FL
    US

    727-502-8072 (voice)
    nplant@usgs.gov
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    This digital publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 21-Jul-2021
Metadata author:
Breanna N. Williams
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
Researcher I
600 4th Street South
St. Petersburg, FL
US

727-502-8027 (voice)
bnwilliams@contractor.usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/NASA-KSC_shorelines_metadata.faq.html>
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