Core Location Shapefile of Sediment Samples Collected between August-October 2010 Offshore of the Mississippi Barrier Islands (U.S. Geological Survey Field Activity Number 10CCT05)

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Frequently anticipated questions:


What does this data set describe?

Title:
Core Location Shapefile of Sediment Samples Collected between August-October 2010 Offshore of the Mississippi Barrier Islands (U.S. Geological Survey Field Activity Number 10CCT05)
Abstract:
In 2010, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center collected sediment cores from coastal waters offshore of the Mississippi barrier islands. With funding support from the Northern Gulf of Mexico Ecosystem Change and Hazard Susceptibility project (NGOM), subaqueous sediment cores were collected over an area of 480 km2, the distance from Ship Island to Petit Bois Island Pass, Mississippi, within the boundary of the Gulf Islands National Seashore. This represents only a fraction of the total area encompassed by the NGOM project, which extends from Sabine Lake, Louisiana to Perdido Bay, Alabama. The primary objectives of the NGOM project are to understand the evolution of coastal ecosystems on the northern gulf coast, the impact of human activities on these ecosystems, and the vulnerability of ecosystems and human communities to more frequent and intense hurricanes in the future. Selection of the core sites was based on geophysical surveys conducted around the islands from 2008-2010. The surveys, using acoustic systems to image and interpret the nearsurface stratigraphy, were conducted to investigate the geologic controls on island evolution. This data series serves as an archive of sediment data collected from August to September, 2010 offshore of the Mississippi barrier islands. Data products, including descriptive core logs, core photographs, results of sediment grain-size analyses, sample location maps, and Geographic Information System (GIS) data files with accompanying formal Federal Geographic Data Committee (FDGC) metadata, can be downloaded from the data products and downloads page.
Supplemental_Information: None
  1. How might this data set be cited?
    Bernier, Julie C., 20140315, Core Location Shapefile of Sediment Samples Collected between August-October 2010 Offshore of the Mississippi Barrier Islands (U.S. Geological Survey Field Activity Number 10CCT05):.

    Online Links:

    This is part of the following larger work.

    Kelso, Kyle W., and Flocks, James G., 20140315, Archive of Sediment Data From Vibracores Collected in 2010 Offshore of the Mississippi Barrier Islands: U.S. Geological Survey Data Series 903, U.S. Geological Survey, St. Petersburg, FL.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -89.002267
    East_Bounding_Coordinate: -88.379840
    North_Bounding_Coordinate: 30.260100
    South_Bounding_Coordinate: 30.184930
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 09-Aug-2010
    Ending_Date: 02-Oct-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):
      • Point (65)
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 16
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: 87.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000.0
      False_Northing: 0.0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.001
      Ordinates (y-coordinates) are specified to the nearest 0.001
      Planar coordinates are specified in Meters
      The horizontal datum used is D North American 1983.
      The ellipsoid used is GRS 1980.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257222101.
  7. How does the data set describe geographic features?
    10CCT05_Core_Sites.shp
    ESRI point shapefile representing the location of sediment samples collected from August to October 2010 offshore of the Mississippi barrier islands, (U.S. Geological Survey Field Activity Number 10CCT05) (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
    Core
    Core Number (Source: USGS) Core numbers range from 1-65
    Date Cored
    Date the vibracore was extracted (Source: USGS) Dates are represented in M/D/YYYY format
    Time Cored
    Approximate time the core was extracted (Source: USGS) Time is represented in HH:MM:SS format
    LAT_dd
    Latitude of sample location in decimal degrees (NAD83) (Source: USGS)
    Range of values
    Minimum:30.18493
    Maximum:30.26010
    Units:decimal degrees
    Resolution:0.00001
    LON_dd
    Longitude of sample location in decimal degrees (NAD83) (Source: USGS)
    Range of values
    Minimum:-89.00227
    Maximum:-88.37984
    Units:decimal degrees
    Resolution:0.00001
    W.D. (m)
    Water Depth (in meters) of the core location (Source: USGS)
    Range of values
    Minimum:0
    Maximum:12.5
    Units:meters
    Actual_Len
    Actual core length measured in meters (Source: USGS)
    Range of values
    Minimum:68.5
    Maximum:596
    Units:meters
    Corelog_ID
    Associated core description file in .pdf format (Source: USGS) A prefix, "10cct05-", followed by the core number and file extension were used for each file name listed under this attribute field. For example, 10cct05-01.pdf is the file name associated with the first core."

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Julie C. Bernier
  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?
    U.S. Geological Survey
    Attn: Kyle Kelso
    Geologist
    600 4th Street South
    St. Petersburg, FL
    USA

    (727) 502-8000 (voice)
    kkelso@usgs.gov

Why was the data set created?

This zip archive includes the sample locations in ESRI shapefile format for sediment samples collected from August 9, 2010 to October 2, 2010 from offshore of the Mississippi barrier islands (U.S. Geological Survey Field Activity Number 10CCT05).

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: 2010 (process 1 of 1)
    Sample locations were recorded at the time of collection along with any pertinent site information. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Kyle Kelso
    Geologist
    600 4th Street South
    St. Petersburg, FL
    USA

    (727) 502-8000 (voice)
    kkelso@usgs.gov
  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 positional accuracy of the sample locations is determined by the accuracy of the receiver used to locate the samples at the time of collection.
  2. How accurate are the geographic locations?
    Sample locations were recorded at the time of collection using the boat GPS equipment.
  3. How accurate are the heights or depths?
    Vertical elevations were dervied from local water levels.
  4. Where are the gaps in the data? What is missing?
    This dataset includes the locations of 65 vibracores that were collected offshore of the Mississippi barrier islands in 2010 (U.S. Geological Survey Field Activity Number 10CCT05).
  5. How consistent are the relationships among the observations, including topology?
    Sample locations were recorded at the time of collection using the Global Positioning System (GPS) mounted on the vessel (R/V G.K. Gilbert) used to collect the sediment cores.

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:
The U.S. Geological Survey requests that it be acknowledged as the originator of this dataset in any future products or research derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey
    Attn: Kyle Kelso
    Geologist
    600 4th Street South
    St. Petersburg, FL
    USA

    (727) 502-8000 (voice)
    kkelso@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?
    This 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, or for general or scientific purposes, 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?
  5. What hardware or software do I need in order to use the data set?
    This shapefile was created using ESRI ArcGIS version 10.2 and can be opened using ESRI ArcGIS version 10.0 or higher; these data may also be viewed using the free GIS viewer ArcGIS Explorer (http://www.esri.com/software/arcgis/explorer).

Who wrote the metadata?

Dates:
Last modified: 29-Jan-20168
Metadata author:
U.S. Geological Survey
Attn: Kyle Kelso
Geologist
600 4th Street South
St. Petersburg, FL
USA

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

This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/10CCT05_shapefile-met.faq.html>
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