U.S. Geological Survey Open-File Report 02-002

MMS88: Location of cores collected during cruise R/V ATLANTIC TWIN 88-1 (AT-88-1)

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?
• 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:

MMS88: Location of cores collected during cruise R/V ATLANTIC TWIN 88-1 (AT-88-1)

Abstract:

This GIS layer contains the station navigation for vibracores collected in Long Island Sound during 1988. These cores were originally collected to study nearshore geologic framework.

1. How should this data set be cited?

   DiGiacomo-Cohen(comp.), Mary, 2002, MMS88: Location of cores collected during cruise R/V ATLANTIC TWIN 88-1 (AT-88-1): U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center.

   Online Links:

   • <http://woodshole.er.usgs.gov/openfile/of02-002/data/cores/mms88/>

   This is part of the following larger work.

   Poppe, Larry, and Paskevich, Valerie, 2002, Geological Framework data from Long Island Sound, 1981-1990: A Digital Data Release: U.S. Geological Survey Open-File Report 02-002, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole, MA.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -73.308334

   East_Bounding_Coordinate: -71.210000

   North_Bounding_Coordinate: 41.380000

   South_Bounding_Coordinate: 41.023331

3. What does it look like?

   ../../../htmldocs/images/browse/mms88.gif (GIF)

   location of MMS88 cores shown in relationship to Long Island Sound area

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

   Calendar_Date: 18-Sep-1988

   Currentness_Reference: publication date

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 (14)

   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?

   mms88

   shapefile attribute table (Source: ESRI)

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Range of values
   Units:	none
   Resolution:	1

   Shape

   Feature geometry. (Source: ESRI)

   Value	Definition
   Point	point data

   Coordinates defining the features.

   CRUISEID

   Name given to cruise during which the cores were collected. (Source: assigned)

   Value	Definition
   AT-88-1	identifier assigned to cruise R/V ATLANTIC TWIN 88-1

   Range of values
   Units:	none
   Resolution:	Not applicable

   DATE

   Date when core was collected. (Source: Original logs generated aboard the Atlantic Twin)

   Value	Definition
   09/18/88	Date core was collected recorded as ASCII string.
   09/19/88	Date core was collected recorded as ASCII string.
   09/20/88	Date core was collected recorded as ASCII string.
   09/21/88	Date core was collected recorded as ASCII string.
   09/88	Date core was collected recorded as ASCII string. Day of month unknown.

   COREID

   Numbers assigned to cores collected during cruise R/V Atlantic Twin 88-1 (AT88-1) (Source: Ralph Lewis, CT DEP)

   Value	Definition
   AT88-1 thru AT88-14	ASCII character string (AT88) followed by assigned sequential numeric integer of core

   LAT

   Latitude in decimal degrees of the navigation point (Source: Compiler)

   Range of values
   Minimum:	41.023331
   Maximum:	41.280003
   Units:	decimal degrees
   Resolution:	0.000001

   LON

   Longitude in decimal degrees of the navigation point (Source: Compiler)

   Range of values
   Minimum:	-72.093338
   Maximum:	-73.308334
   Units:	Decimal degrees
   Resolution:	0.000001

   URL

   Link to the HTML page containing the text description of the associated core. URL path is relative to the ArcView project home. (Source: Processor)

   Relative path and filename containing the text description of the associated core.

   Entity_and_Attribute_Overview:

   This datalayer (navigation of the 1988 MMS cores from LIS) provides information location of vibracores used to interpret the regional geologic framework.

   Entity_and_Attribute_Detail_Citation:

   Geological Framework data from Long Island Sound, 1981-1990: a digital release

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Mary DiGiacomo-Cohen(comp.)

2. Who also contributed to the data set?

   Ralph Lewis the original Connecticut project chief; and Mary DiGiacomo-Cohen and Valerie Paskevich for completing the Arc processing and creation of the GIS data layer.

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

   U.S. Geological Survey
   c/o Larry Poppe
   Geologist
   384 Woods Hole Road
   Woods Hole, MA 02543-1598
   USA
   

   (508) 548-8700 x2314 (voice)
   (508) 457-2310 (FAX)
   lpoppe@usgs.gov
   

   Hours_of_Service: 0800-1600

The purpose is to disseminate a digital version of a regional map showing the distribution of vibracores collected during 1988 in Long Island Sound aboard the Atlantic Twin as part of a cooperative between New England coastal states and the Minerals Management Service. These cores, which were used to verify interpretations of high-resolution seismic-reflection profiles, can be used to provide useful information about the framework geology in this region.

1. From what previous works were the data drawn?

   MMS core location navigation logs (source 1 of 1)

   Neff(comp.), Nanc, McMaster(comp.), Bob, Lewis(comp.), Ralph, and Thomas(comp.), Hugo, 19890000, Non-energy resources - Connecticut and Rhode Island coastal waters: Final Summary Report to the Minerals Management Service Cooperative Agreement Number 14-12-0001-30387, Rhode Island and Connecticut DEPs, Hartford.

   Type_of_Source_Media: Vibracore cruise logs and report, navigated with LORAN-C

   Source_Scale_Denominator: 80,000

   Source_Contribution:

   Vibra cores were colected as part of a cooperative program between MMS and New England coastal states. This dataset contains the locations of those cores collected in Long Island Sound.

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

   Date: 1991 (process 1 of 4)

   Navigation points from the original onboard logs were hand plotted on charts with Loran overlays. These overlays were then registered and digitized (using a Calcomp 9100 table and PC Arc/Info) to create point coverages with CT state plane coordinates. Attributes were added.

   Person who carried out this activity:
   

   Connecticut DEP
   c/o Mary DiGiacomo-Cohen
   Long Island Sound Resource Center
   UCONN Avery Point
   1080 Shennecossett Road
   Groton, CT 06340
   USA
   

   (860) 405-9015 (voice)
   lisrc@uconnvm.uconn.edu
   

   Data sources used in this process:

   • MMS core location navigation logs

   Data sources produced in this process:

   • ATCores navigation coverage

   Date: 2001 (process 2 of 4)

   The navigation coverage was projected to Latitude/Longitude using Arc/Info. Decimal degree coordinates were ungenerated and joined to the attribute table. A shapefile was generated using ArcView.

   Person who carried out this activity:
   

   Connecticut DEP
   c/o Mary DiGiacomo-Cohen
   Long Island Sound Recource Center
   UCONN Avery Point
   1080 Shennecossett Road
   Groton, CT 06340
   USA
   

   (860)405-9015 (voice)
   lisrc@uconnvm.uconn.edu
   

   Data sources used in this process:

   • ATCores navigation coverage

   Data sources produced in this process:

   • ATCores navigation coverage

   Date: 03-Apr-2002 (process 3 of 4)

   The AT88-1 shapefile name was changed to be more descriptive within the USGS Open-File Report 02-002.

   Person who carried out this activity:
   

   Valerie Paskevich
   U.S. Geological Survey
   Computer Specialist
   384 Woods Hole Road
   Woods Hole, MA 02543=1598
   USA
   

   (508) 548-8700 x2281 (voice)
   (508) 457-2310 (FAX)
   vpaskevich@usgs.gov
   

   Data sources used in this process:

   • ATCores navigation coverage

   Data sources produced in this process:

   • mms88.dbf
   • mms88.shp
   • mms88.shx
   • mms88.sbn
   • mms88.sbx

   Date: 04-Apr-2002 (process 4 of 4)

   Added the attribute field URL to include the relative path name from the ArcView project home to the text description of the associated core.

   Person who carried out this activity:
   

   Valerie Paskevich
   U.S. Geological Survey
   Computer Specialist
   384 Woods Hole Road
   Woods Hole, MA 02543-1598
   USA
   

   (508) 548-8700 x2281 (voice)
   (508) 457-2310 (FAX)
   vpaskevich@usgs.gov
   

   Data sources used in this process:

   • mms88.dbf

   Data sources produced in this process:

   • mms88.dbf

1. How well have the observations been checked?

   All attribute data were recorded by the chief scientist and entered and checked by the compilers in a consistent manner.

2. How accurate are the geographic locations?

   Navigation was done by Loran C. Typical Loran accuracy for LIS is about 100 m.

3. How accurate are the heights or depths?

   Tides are less than 2 m

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

   Complete information is provided for all navigation points in the data set.

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

   No additional checks for topological consistency were performed on this data set.

Are there legal restrictions on access or use of the data?

Access_Constraints: None

Use_Constraints:

The U.S. Geological Survey, Connecticut DEP, and the U.S. Minerals ManagementService must be referenced as the originators of the dataset in any future products or research derived from these data. Although this derived data set and its lineage dataset have been used by the 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.

1. Who distributes the data set? (Distributor 1 of 1)

   U.S. Geological Survey
   c/o Larry Poppe
   Geologist
   384 Woods Hole Road
   Woods Hole, MA 02543-1598
   USA
   

   (508) 548-8700 x2314 (voice)
   (508) 457-2310 (FAX)
   lpoppe@usgs.gov
   

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

   Long Island Sound: mms88.shp

3. What legal disclaimers am I supposed to read?

   Although this derived data set and its lineage dataset have been used by the 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.

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

     Data format:	The seven ArcView shapefiles (mms88.dbf, mms88.shp, mms88.shx, mms88.avl, mms88.sbn, mms88.sbx, mms88.prj) comprising the navigation point data for the AT88-1 vibracore cruise in Long Island Sound and an ASCII version of the metadata. in format ArcView shapefile (version 3.2) Size: 7.46Kbytes
     Network links:	<http://woodshole.er.usgs.gov/openfile/of02-002/data/cores/mms88/mms88.zip>
     Media you can order:	DVD (Density 4.7 Gbytes) Note: The user must have a system with a DVD drive capable of reading an UDF standard DVD-R disk. To browse the information contained on this disk, the user must also have a current version of WWW browser available. The user must also have the software installed on their computer system capable to unzip the archived file.

   • Cost to order the data:

5. Is there some other way to get the data?

   None

6. What hardware or software do I need in order to use the data set?

   The AT88-1 navigation overlay is available in an ArcView shapefile format. The user must have ESRI's ArcView 3.0 or greater software to read and process the data file. In lieu of Arcview, the user may utilize another GIS application package capable of importing the data.

Dates:

Last modified: 04-Apr-2002

Metadata author:

Valerie Paskevich
U.S. Geological Survey
computer specialist
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov

Metadata standard:

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