OBTF_1999: NCDOT Outer Banks Task Force Offshore Sand Resources Study

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  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?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

Title:

OBTF_1999: NCDOT Outer Banks Task Force Offshore Sand Resources Study

Abstract:

"This study was initiated through a Memorandum of Agreement between the OBTF and the North Carolina Geological Survey in 1994 in order to identify potential beach nourishment sand resources and areas of potential hard bottom (environmentally sensitive areas) within the OBTF study area. The information collected includes seismic, side-scan, and vibracore data. The reports (see links below) summarize the geology of each area studied and provide information on the location and estimated amount of sand resources offshore of the erosional hotspots. This website contains a database of the vibracore data collected as part of this study. The interactive database shows core locations, core images, and textural (grain size) data derived from the core. Vibracores were collected during 8 weeks (July - August 1995) aboard the United States Army Vessel Snell from Oregon Inlet southward to Cape Hatteras, across Diamond Shoals, then westward to Ocracoke Inlet. Upon completion of the field-sampling program, all cores were transferred to the Coastal Plain Office of the North Carolina Geological Survey for processing. All cores were halved lengthwise, described, digitally imaged, and sampled to determine textural attributes. The digital images of each core were archived on CD-ROM and placed into the public domain at the Coastal Plain Office of the North Carolina Geological Survey. Core sediment samples were processed using standard laboratory methods by the Soils Testing Laboratory of the North Carolina Department of Transportation and textural attributes were compiled and archived on CD-ROM at the Coastal Plain Office of the North Carolina Geological Survey."

1. How should this data set be cited?

   North Carolina Geological Survey, 1999, OBTF_1999: NCDOT Outer Banks Task Force Offshore Sand Resources Study.

   Online Links:

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -75.912500

   East_Bounding_Coordinate: -75.396160

   North_Bounding_Coordinate: 35.797160

   South_Bounding_Coordinate: 35.089590

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 1999

   Currentness_Reference: publication date

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 Vector data set. It contains the following vector data types (SDTS terminology):

      • Entity point (1202)

   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 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
      

7. How does the data set describe geographic features?

   obtf_1999

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   LATITUDE

   LONGITUDE

   SITENAME

   DATASETKEY

   Entity_and_Attribute_Overview:

   The following attributes were entered into usSEABED: CORE|Study Area|Latitude|Longitude|Water Depth (m)|Length (m)|Core TD Subsea (m) Interval (cm)|Mud|Sand|Gravel|Mean (mm)|Mean (Ø)|StDev (Ø) (Weight Percent & Grain Size) Top(m)|Bot(m)|Gvl|Snd|||Mud||AvGrsz|StDev

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • North Carolina Geological Survey

2. Who also contributed to the data set?

   Please review the cross reference information for the original data set credit.

3. To whom should users address questions about the data?

   Charles W. Hoffman
   North Carolina Geological Survey
   1612 Mail Service Center
   Raleigh, NC 27669-1612
   USA
   

   (919) 733-2423 (voice)
   bill.hoffman@ncmail.net
   

To identify potential beach nourishment sand resources and areas of potential hard bottom (environmentally sensitive areas) within the OBTF study area.

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

   (process 1 of 2)

   Data were downloaded from the OBTF website and placed into Excel spreadsheets. (<http://www.obtf.org/NC12/NC12HTML/Start.htm>)

   Person who carried out this activity:
   

   Chris Jenkins
   Institute of Arctic & Alpine Research (INSTAAR) Univeristy of Colorado at Boulder
   1560 30th Street
   Boulder, CO 80309-0450
   USA
   

   (303) 735-5250 (voice)
   (303) 492-6388 (FAX)
   chris.jenkins@colorado.edu
   

   (process 2 of 2)

   Digital data were hand formatted into dbSEABED data entry structure, then filtered and data-mined through dbSEABED software (version: db9_MNEs.bas)

   Person who carried out this activity:
   

   Chris Jenkins
   Institute of Arctic & Alpine Research (INSTAAR) Univeristy of Colorado at Boulder
   1560 30th Street
   Boulder, CO 80309-0450
   USA
   

   (303) 735-5250 (voice)
   (303) 492-6388 (FAX)
   chris.jenkins@colorado.edu
   

3. What similar or related data should the user be aware of?

   Boss, Stephen K. , and Hoffman, Charles W. , 1999, SAND RESOURCES OF THE NORTH CAROLINA OUTER BANKS: 1st INTERIM REPORT: ASSESSMENT OF DIAMOND SHOALS STUDY AREA.

   Online Links:

   • <http://www.obtf.org/NC12/REPORTS/NC12PDF/DSHOALS.PDF>

   Other_Citation_Details:

   Prepared for the Outer Banks Task Force and the North Carolina Department of Transportation; Final Report Submitted: April 1999; Draft Report Submitted: February 1999

   Boss, Stephen K. , and Hoffman, Charles W. , 1999, SAND RESOURCES OF THE NORTH CAROLINA OUTER BANKS: 2nd INTERIM REPORT: ASSESSMENT OF BUXTON STUDY AREA.

   Online Links:

   • <http://www.obtf.org/NC12/REPORTS/NC12PDF/BUXTON.PDF>

   Other_Citation_Details:

   Prepared for the Outer Banks Task Force and the North Carolina Department of Transportation; Submitted: June 1999; Revised: August 1999

   Boss, Stephen K. , and Hoffman, Charles W. , 1999, SAND RESOURCES OF THE NORTH CAROLINA OUTER BANKS: 3rd INTERIM REPORT: ASSESSMENT OF FRISCO-OCRACOKE STUDY AREA.

   Online Links:

   • <http://www.obtf.org/NC12/REPORTS/NC12PDF/FRISOCR.PDF>

   Other_Citation_Details:

   Prepared for the Outer Banks Task Force and the North Carolina Department of Transportation; Submitted: August 1999; Revised: November 1999

   Boss, Stephen K. , and Hoffman, Charles W. , 1999, SAND RESOURCES OF THE NORTH CAROLINA OUTER BANKS: 4th INTERIM REPORT: ASSESSMENT OF PEA ISLAND STUDY AREA.

   Online Links:

   • <http://www.obtf.org/NC12/REPORTS/NC12PDF/PEAISLD.PDF>

   Other_Citation_Details:

   Prepared for the Outer Banks Task Force and the North Carolina Department of Transportation; Submitted: December 1999; Revised: February, 2000

   Boss, Stephen K. , and Hoffman, Charles W. , 2000, FINAL REPORT: SAND RESOURCES OF THE NORTH CAROLINA OUTER BANKS.

   Online Links:

   • <http://www.obtf.org/NC12/REPORTS/NC12PDF/COMP.PDF>

   Other_Citation_Details:

   Prepared for the Outer Banks Task Force and the North Carolina Department of Transportation; Submitted: March 2000; Revised: April 2000

   Hoffman, Charles W. , Boss, Stephen K. , and Brooks, Robert W. , 2001, Interactive Database: Vibracores offshore of Hatteras and Ocracoke Islands, North Carolina: Open-File Report 2001-01, North Carolina Geological Survey, Raleigh, NC.

   Other_Citation_Details: 1 CD-ROM

1. How well have the observations been checked?

2. How accurate are the geographic locations?

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

5. How consistent are the relationships among the observations, including topology?

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)

   Charles W. Hoffman
   North Carolina Geological Survey
   1612 Mail Service Center
   Raleigh, NC 27669-1612
   USA
   

   (919) 733-2423 (voice)
   bill.hoffman@ncmail.net
   

2. What's the catalog number I need to order this data set?

   Downloadable Data

3. What legal disclaimers am I supposed to read?

   Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. 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. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Size: 0.154

   • Cost to order the data:

Dates:

Last modified: 25-May-2005
Last Reviewed: 04-May-2005

Metadata author:

Jamey Reid
U.S. Geological Survey
IT Specialist (Data Management)
384 Woods Hole Rd.
Woods Hole, MA 02543-1598

(508) 548-8700 x2204 (voice)
(508) 457-2310 (FAX)
jreid@usgs.gov

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>