The shoreline was created from data captured (digitized from scanned images of the master separates of the NOS Charts) from over 270 National Ocean Service Navigation Charts and spans some 80,000 nautical miles at an average map scale of 1:70,000.
This product comprises over 75,000 nautical miles of coastline (nearly 2.5 million vectices), representing the entire conterminous United States of America. Alaska, the Hawaiian Islands, Puerto Rico, and all other interests and territories of the United States are not included in the collection.
The data set is designed for a broad target audience ranging from governmental agencies, universities and other research institutions, to the private sector, and students, as well as any other concern requiring a general purpose digital shoreline layer for GIS and cartographic projects.
National Oceanic and Atmospheri, National Ocean Service (NOS), Office of , 1994, NOS80K/ALLUS80K: Medium Resolution Digital Vector U.S. Shoreline shapefile Long Island Sound GIS project area: NOAA/NOS/ORCA/SEA, Silver Spring, MD.This is part of the following larger work.Online Links:
- <http://seaserver.nos.noaa.gov/projects/shoreline/shoreline.html>
- <ftp://seaserver.nos.noaa.gov/datasets/shoreline/shoreline.html>
- <http://coastalmap.marine.usgs.gov/GISdata/basemaps/coastlines/nos80k/nos80k.zip>
Poppe, L.J., Paskevich, V.F., Moser, M.S., DiGiacomo-Cohen, M.L., and Christman, E.B., 2004, Sidescan Sonar Imagery and Surficial Geologic Interpretation of the Sea Floor off Branford, Connecticut: Open-File Report 2004-1003, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
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 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 1/298.257222.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
Please credit National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey, and the Strategic Environmental Assessments (SEA) Division of the Office of Ocean Resources Conservation and Assessment (ORCA) as the originator of the dataset.
Steve Rohmann
NOAA/NOS/SEA/ORCA
NOAA
Silver Spring, MD 20910
USA
(301) 713-3000 x137 (voice)
(301) 713-4384 (FAX)
srohmann@seamail.nos.noaa.gov
Because the ALLUS80K provides a higher detail of coastal inlets and waterways, this data layer was added to the GIS to provide a reasonable represntation of the coastline for the project area. This data layer is a subset of the complete ALLUS80k coastline and shapefile and has been clipped to the GIS project extent.
Person who carried out this activity:
Valerie PaskevichData sources used in this process:
U.S. Geological Survey
Information Specialist / GIS Coordinator
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov
Data sources produced in this process:
Poppe, Larry, and Paskevich, Valerie, 2002, Geological Framework Data from Long Island Sound, 1981-1990: A Digital Data Release: Open-File Report 02-002, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
(editor), V.F. Paskevich , and (editor), L.J. Poppe , 2000, Georeferenced Mapping and Bottom Photography in Long Island Sound: Open-File Report 00-304, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.Online Links:
The data supplied here are a compilation of information collected from some 270+ current or pre-release National Ocean Service Navigation Charts. In compiling this product we made no attempt to ascertain the congruency between the charted data, and the real world. Our objective was to simply capture the representative coastline as provided to us via the NOS Chart. Every effort was made to capture the shoreline on these charts as faithfully as our skills and technology allowed, and there is every indication that we were successful to this end. However, in doing so, we automatically conveyed the character (all aspects, both good and bad) of those data to our digital product. A character which may or may not be in agreement with the real world. Because of this, the user is advised to exercise caution in making any assumptions about the fallibility, or infallibility, of the spatial information supplied here; especially when circumstances warrant a high degree of absolute positional accuracy.
Spatial data were derived directly from National Ocean Service Navigation Charts. The NOS Chart Products meet or exceed National Map Accuracy standards (hard copy); the digital data supplied in this compilation should, when plotted at scale, meet or exceed these same cartographic standards.
The data supplied here are a compilation of information collected from some 270+ current or pre-release National Ocean Service Navigation Charts. In compiling this product we made no attempt to ascertain the congruency between the charted data, and the real world. Our objective was to simply capture the representative coastline as provided to us via the NOS Chart. Every effort was made to capture the shoreline on these charts as faithfully as our skills and technology allowed, and there is every indication that we were successful to this end. However, in doing so, we automatically conveyed the character (all aspects, both good and bad) of those data to our digital product. A character which may or may not be in agreement with the real world. Because of this, the user is advised to exercise caution in making any assumptions about the fallibility, or infallibility, of the spatial information supplied here; especially when circumstances warrant a high degree of absolute positional accuracy.
This data set is a subset of the complete ALLUS80K shapefile.
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:
- Public domain data are freely redistributable with proper metadata and source attribution.
Not to be used for Navigational Purposes.
Steve Rohmann
NOAA, N/ORCA1
NOAA
Silver Spring, MD 20910
USA
(301) 713-3000 x137 (voice)
(301) 713-4384 (FAX)
rohmann@seamail.nos.noaa.gov
Downloadable Data: Medium Resolution Digital Vector U.S. Shoreline [OL 72 18.7 -66.5 -168]
Although this data has been processed successfully on a computer system at the NOAA, no warranty, expressed or implied, is made by NOAA regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. NOAA warrants the delivery of this product in computer-readable format, and will offer a replacement copy of the product when the product is determined unreadable by computer input peripherals, or when the physical medium is delivered in damaged condition.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.
| Data format: | The five files (nos80k.dbf, nos80k.shp, nos80k.shx) that comprise the ArcView shapefile, 'prj' and 'avl' files, browse graphic and an ASCII version of the metadata. in format ArcView Shapefile (version 3.2) ESRI polygon shapefile Size: 38.544 |
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| Media you can order: |
CD-ROM
(Density 650
Mbyte)
Note: The user must have a computer system with a CD-ROM available. To browse the information contained on this CD-ROM, the user must have a current WWW browser available. The user must also have software installed on their computer to unzip the archived file.
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The base map overlay is available in the ESRI shapefile format. The user must have Environmental Systems Research Institute's (ESRI) ArcView 3.0 or greater or ArcGIS 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. A free GIS data viewer, ArcExplorer, is available from the ESRI website at www.esri.com/software/arcexplorer/download4.htmlAccess to the data and information contained on this CD-ROM was developed using the HyperText Markup Language (HTML) utilized by the World Wide Web (WWW) project. Development of the CD-ROM documentation and user interface in HTML allows a user to access the information by using a variety of WWW information browsers to facilitate browsing and locating information and data. To access the information contained on this disk with a WWW client browser, open the file 'index.htm' at the top level directory of this CD-ROM with your selected browser.
This CD-ROM should be readable by a variety of operating systems including Windows 95/98/NT, Macintosh and UNIX.
U. S. Geological Survey
c/o Valerie Paskevich
Information Specialist / GIS Coordinator
384 Woods Hole Rd.
Woods Hole, MA 02543
USA
(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov