Page C. Valentine Lian A. Scully Sarah J. Fuller 2005 1.0 vector digital data Scientific Investigations Map2840 Woods Hole Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program http://pubs.usgs.gov/sim/2005/2840/data/ridges/ridges0.zip Page C. Valentine, editor 2005 1.0 Scientific Investigations Map SI-2840 Woods Hole Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program http://pubs.usgs.gov/sim/2005/2840/ ridges0 This data set contains the locations of boulder ridges that are less than 1 meter in height in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts, an area of approximately 1100 nautical square miles. The Stellwagen Bank NMS Mapping Project is designed to provide detailed maps of the Stellwagen Bank region's environments and habitats and the first complete multibeam topographic and sea floor characterization maps of a significant region of the shallow EEZ. The boulder ridges were identified using multibeam topographic imagery and backscatter intensity of the seabed and video and photographic images collected from 1994 to 2003. Development of interpretive seabed maps, sea floor imagery, and a GIS database that are accessible to scientists, policymakers, managers, and the general public. en 2005 publication date Complete As needed -70.599891 -70.036156 42.792679 42.116601 -23593.50437223367.4152343853725.3289883929780.615191 General Geographic Information Systems GIS U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Science Center WHSC topographic data sea floor topography bathymetry boulder ridges sea floor photos sea floor video sea floor features polygon shapefileinterpretation General Massachusetts MA Stellwagen Bank National Marine Sanctuary SBNMS Shallow EEZ EEZ Gulf of Maine Atlantic Ocean Boston oceans and estuariesISO 19115 Topic CategorygeoscientificInformation none Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Page C. Valentine U.S. Geological Survey Research Geologist mailing and physical address

U.S. Geological Survey

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA (508) 548-8700 x2239 (508) 457-2310 pvalentine@usgs.gov Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 Shapefile Boulder ridges were visually identified using the Stellwagen Bank sun-illuminated multibeam sonar image combined with backscatter intensity images, and where available, video and/or photographic imagery from the region and then digitized using the Editor toolbar in ArcMap. ridges0.shpridges.dbfridges.shx No additional checks for topological consistency were performed on the data. Vector G-polygon 513 SimplePolygonFALSE513FALSEFALSE coordinate pair 0.000128 0.000128 meters Mercator41.650000-70.3166670.0000000.000000 North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983NAD_1983_Mercator ridges0 Shapefile Attribute Table Feature Class513ESRI FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. Area Area (square meters) covered by each boulder ridge. 507.166806 44182.282778 square meters .000001 Number1911USGS Perimeter Perimeter (meters) of each boulder ridge. 93.035378 977.777809 meters .000001 Number1911USGS Hectares Hectares covered by each boulder ridge 0.050717 4.418228 hectares .000001 Number1911USGS MIN Base of ridge, in meters above sea level (a negative value). -93.919998 -19 meters .000001 Number1911USGS MAX Top of ridge, in meters above sea level (a negative value). -93.209999 -18.080000 meters .000001 Number1911USGS RANGE Height of ridge (meters), calculated by subtracting top of ridge (max) from base of ridge (min). 0.129997 0.990002 meters .000001 Number1911USGS Page C. Valentine U.S. Geological Survey Research Geologist mailing and physical address

U.S. Geological Survey

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA (508) 548-8700 x2239 (508) 457-2310 pvalentine@usgs.gov Downloadable Data Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. SHP 0.442 0.4423.3ESRI shapefileThe SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional).zuo DVD-ROM 4.75GbytesUDF http://pubs.usgs.gov/sim/2005/2840/data/ridges/ridges0.zip None These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS® or ArcView® 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of the importing data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com. 20050822 U.S. Geological Survey Page C. Valentine Research Geologist mailing and physical address

U.S. Geological Survey

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA (508) 548-8700 x2239 (508) 457-2310 pvalentine@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time enNoneNonehttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile 20050822094214002005081512415500FALSE2005082209421400{E1605DBB-1D6A-4ACB-96FE-B59011BA894F}20050822Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535ridges0-23593.50437223367.4152343929780.6151913853725.3289881-70.599891-70.03615642.79267942.1166011ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\Erihefdtxp\G_DATA\SBNMSI-maps\dataforCD_081505\ridges\ridges0.shpLocal Area Network0.442ShapefileNAD_1983_Mercator513