Cape Canaveral, Florida, backscatter data collected in 2016 by Coastal Carolina University: Processed GeoTIFF Image

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Frequently anticipated questions:


What does this data set describe?

Title:
Cape Canaveral, Florida, backscatter data collected in 2016 by Coastal Carolina University: Processed GeoTIFF Image
Abstract:
A geophysical survey was conducted offshore Cape Canaveral, Florida by Coastal Carolina University offshore of Cape Canaveral, Florida using high-resolution chirp sub-bottom, multibeam bathymetry and side scan sonar (SSS) systems on June 13, 14, 16, and 17 of 2016. This USGS data release includes the resulting processed elevation point data (xyz), an interpolated digital elevation model (DEM), with processed backscatter, side scan sonar, and seismic chirp data.
Supplemental_Information:
Multibeam and backscatter data for Cape Canaveral, Florida, were acquired using a Kongsberg EM3002D dual-head multibeam sonar system aboard the research vessel (R/V) Coastal Explorer by the Center for Marine and Wetland Studies (CMWS) at CCU, South Carolina. A Kongsberg Seatex Seapath system was used to provide position and attitude data during data collection and accounted for vessel motion such as heave, pitch, and roll (x and y position accuracy ± 1 centimeter (cm), z position accuracy 2 cm, heading accuracy 0.05%, roll and pitch accuracy ± 0.03°, heave accuracy ± 5% or 5 cm). Prior to data collection, planned survey lines were created using the survey navigation and planning software HYPACK, version 2014. Altitude data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems smart SV. The CMWS at Coastal Carolina University created final products from the post-processed multibeam bathymetry data.
  1. How might this data set be cited?
    Buster, Noreen A., 20170717, Cape Canaveral, Florida, backscatter data collected in 2016 by Coastal Carolina University: Processed GeoTIFF Image: U.S. Geological Survey Data Release doi:10.5066/F7833Q8J.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -80.621496
    East_Bounding_Coordinate: -80.435975
    North_Bounding_Coordinate: 28.673629
    South_Bounding_Coordinate: 28.381468
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 13-Jun-2016
    Ending_Date: 17-Jun-2016
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: raster 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 32297 x 18025, type Grid Cell
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 17
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -81.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000
      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 1.0
      Ordinates (y-coordinates) are specified to the nearest 1.0
      Planar coordinates are specified in meters
      The horizontal datum used is North American Datum 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222101.
      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: North American Vertical Datum 1988
      Altitude_Resolution: 0.0001
      Altitude_Distance_Units: meters
      Altitude_Encoding_Method: Attribute values
  7. How does the data set describe geographic features?

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Noreen A. Buster
  2. Who also contributed to the data set?
    U.S. Geological Survey, Coastal and Marine Geology Program, St. Petersburg Coastal and Marine Science Center
  3. To whom should users address questions about the data?
    Noreen A. Buster
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    600 4th Street South
    St. Petersburg, FL
    USA

    (727) 502-8114 (voice)
    nbuster@usgs.gov

Why was the data set created?

The purpose of the survey was to collect geophysical data in the shallow water (2-20 meters [m] water depth) off of Cape Canaveral, Florida, to better understand the linkages between geologic variability and the evolution and resiliency of the coastal system. Data were collected during USGS field activity number (FAN) 2016-342-FA. Additional survey and data details are available from the USGS Coastal and Marine Geoscience Data System (CMGDS) at, http://cmgds.marine.usgs.gov/fan_info.php?fan=2016-342-FA.

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: 19-Jul-2016 (process 1 of 2)
    Multibeam data for Cape Canaveral, Florida were acquired using Kongsberg EM3002D deal-head multibeam sonar system aboard the R/V Coastal Explorer by the Center for Marine and Wetland Studies (CMWS) at Coastal Carolina University (CCU), South Carolina. A Kongsberg Seatex Seapath system was used to provide position and attitude data during data collection and accounted for vessel motion such as heave, pitch, and roll (x and y position accuracy ± 1 cm, z position accuracy 2 cm, heading accuracy 0.05%, roll and pitch accuracy ± 0.03°, heave accuracy ± 5% or 5 cm). Prior to data collection, planned survey lines were created using the survey navigation and planning software HYPACK. Altitude data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems smart SV. Person who carried out this activity:
    Center for Marine and Wetland Studies
    Attn: Shinobu Okano
    Research Specialist
    190 Allied Dr.
    Conway, SC
    US

    843-349-4012 (voice)
    sokano@coastal.edu
    Date: 19-Jul-2016 (process 2 of 2)
    Processing and mosaicking of Kongsberg EM3002D data were completed using Geocoder engine within Fledermaus FMGTv7.5. Within FMGT, the backscatter intensities were radiometrically corrected (including despeckling, Time Varying Gain (TVG) corrections, and Angle Varying Gain (AVG) adjustments) and the position of each acoustic sample was geometrically corrected for slant-range and georeferenced. The mosaic was exported from FMGT in GeoTIFF format. Final mosaics are relative to the North American Datum (NAD83) horizontal datum. Person who carried out this activity:
    Center for Marine and Wetland Studies
    Attn: Shinobu Okano
    Research Specialist
    190 Allied Dr.
    Conway, SC
    US

    843-349-4012 (voice)
    sokano@coastal.edu
    Data sources produced in this process:
    • Canaveral_CCU2016_BackScatter_1m_NAD83.tif
  3. What similar or related data should the user be aware of?

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

  1. How well have the observations been checked?
    The accuracy of the data was determined during data collection. This dataset was from one research cruise and was therefore internally consistent. Methods were employed to maintain data collection consistency aboard the platform. During mobilization, each piece of equipment was isolated to obtain internal and external offset measurements with respect to the survey platform. All the critical measurements were recorded manually and digitally entered into their respective programs. The data have not been independently verified for accuracy.
  2. How accurate are the geographic locations?
    A Kongsberg Seatex Seapath system was used to provide position and attitude data during data collection and accounted for vessel motion such as heave, pitch, and roll (x and y position accuracy ± 1 cm, z position accuracy 2 cm, heading accuracy 0.05%, roll and pitch accuracy ± 0.03°, heave accuracy ± 5% or 5 cm). The trackline position data were recorded using HYPACK hydrographic acquisition and processing software.
  3. How accurate are the heights or depths?
    Please see Horizontal Position Accuracy Report above
  4. Where are the gaps in the data? What is missing?
    These are complete post-processed backscatter data from acoustic multibeam data collected near Cape Canaveral, Florida, in June 2016.
  5. How consistent are the relationships among the observations, including topology?
    This file represents the post-processed backscatter data (x,y,z) collected during a multibeam bathymetry survey.

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. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research.
  1. Who distributes the data set? (Distributor 1 of 1)
    Noreen A. Buster
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    600 4th Street South
    St. Petersburg, FL
    USA

    (727)502-8114 (voice)
    nbuster@usgs.gov
  2. What's the catalog number I need to order this data set? Canaveral_CCU2016_BackScatter_1m_NAD83.tif
  3. What legal disclaimers am I supposed to read?
    Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. Any use of trade, firm, or product 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?

Who wrote the metadata?

Dates:
Last modified: 18-Jul-2017
Metadata author:
Noreen A. Buster
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
Geologist
600 4th Street South
St. Petersburg, FL
USA

(727) 502-8000 (voice)
nbuster@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/Canaveral_CCU2016_BackScatter_1m_NAD83_metadata.faq.html>
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