Identification_Information: Citation: Citation_Information: Originator: Page C. Valentine Originator: Lian A. Scully Originator: Sarah J. Fuller Publication_Date: 2005 Title: ridges0.shp: Boulder ridges less than 1 m high on the sea floor of the Stellwagen Bank National Marine Sanctuary region. Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: 2840 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/sim/2005/2840/data/ridges/ridges0.zip Larger_Work_Citation: Citation_Information: Originator: Page C. Valentine, editor Publication_Date: 2005 Title: Sea floor image maps showing topography, sun-illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts Edition: 1.0 Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: SI-2840 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/sim/2005/2840/ Description: Abstract: 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. Purpose: Development of interpretive seabed maps, sea floor imagery, and a GIS database that are accessible to scientists, policymakers, managers, and the general public. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2005 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.599891 East_Bounding_Coordinate: -70.036156 North_Bounding_Coordinate: 42.792679 South_Bounding_Coordinate: 42.116601 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: Geographic Information Systems Theme_Keyword: GIS Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Woods Hole Science Center Theme_Keyword: WHSC Theme_Keyword: topographic data Theme_Keyword: sea floor topography Theme_Keyword: bathymetry Theme_Keyword: boulder ridges Theme_Keyword: sea floor photos Theme_Keyword: sea floor video Theme_Keyword: sea floor features Theme_Keyword: polygon shapefile Theme_Keyword: interpretation Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans and estuaries Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: General Place_Keyword: Massachusetts Place_Keyword: MA Place_Keyword: Stellwagen Bank National Marine Sanctuary Place_Keyword: SBNMS Place_Keyword: Shallow EEZ Place_Keyword: EEZ Place_Keyword: Gulf of Maine Place_Keyword: Atlantic Ocean Place_Keyword: Boston Access_Constraints: none Use_Constraints: 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. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Page C. Valentine Contact_Organization: U.S. Geological Survey Contact_Position: Research Geologist Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2239 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: pvalentine@usgs.gov Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 Data_Quality_Information: Logical_Consistency_Report: No additional checks for topological consistency were performed on the data. Lineage: Process_Step: Process_Description: 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. Source_Produced_Citation_Abbreviation: ridges0.shp Source_Produced_Citation_Abbreviation: ridges.dbf Source_Produced_Citation_Abbreviation: ridges.shx Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 513 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Mercator Mercator: Standard_Parallel: 41.650000 Longitude_of_Central_Meridian: -70.316667 False_Easting: 0.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000128 Ordinate_Resolution: 0.000128 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: ridges0 Entity_Type_Definition: Shapefile Attribute Table Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: Area Attribute_Definition: Area (square meters) covered by each boulder ridge. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 507.166806 Range_Domain_Maximum: 44182.282778 Attribute_Units_of_Measure: square meters Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: Perimeter Attribute_Definition: Perimeter (meters) of each boulder ridge. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 93.035378 Range_Domain_Maximum: 977.777809 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: Hectares Attribute_Definition: Hectares covered by each boulder ridge Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.050717 Range_Domain_Maximum: 4.418228 Attribute_Units_of_Measure: hectares Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: MIN Attribute_Definition: Base of ridge, in meters above sea level (a negative value). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -93.919998 Range_Domain_Maximum: -19 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: MAX Attribute_Definition: Top of ridge, in meters above sea level (a negative value). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -93.209999 Range_Domain_Maximum: -18.080000 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: RANGE Attribute_Definition: Height of ridge (meters), calculated by subtracting top of ridge (max) from base of ridge (min). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.129997 Range_Domain_Maximum: 0.990002 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: .000001 Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Page C. Valentine Contact_Organization: U.S. Geological Survey Contact_Position: Research Geologist Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2239 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: pvalentine@usgs.gov Resource_Description: Downloadable Data Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SHP Format_Version_Number: 3.3 Format_Specification: ESRI shapefile Format_Information_Content: The 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 .shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). File_Decompression_Technique: zuo Transfer_Size: 0.442 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sim/2005/2840/data/ridges/ridges0.zip Offline_Option: Offline_Media: DVD-ROM Recording_Capacity: Recording_Density: 4.75 Recording_Density_Units: Gbytes Recording_Format: UDF Fees: None Technical_Prerequisites: 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. Metadata_Reference_Information: Metadata_Date: 20050822 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Page C. Valentine Contact_Position: Research Geologist Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2239 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: pvalentine@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: None Metadata_Use_Constraints: None Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile