Identification_Information: Citation: Citation_Information: Originator: Seth Ackerman Publication_Date: 2006 Title: multibeambathybnds: Multibeam Bathymetry Boundaries from Boston Harbor and Approaches Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1008 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/of/2006/1008/gis/datazipped/mbbathybnds.zip Larger_Work_Citation: Citation_Information: Originator: Ackerman, S.D. Originator: Butman, B. Originator: Barnhardt, W.B. Originator: Danforth, W.W. Originator: Crocker, J.M. Publication_Date: 2006 Title: High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1008 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: 1 DVD-ROM Online_Linkage: http://pubs.usgs.gov/of/2006/1008 Description: Abstract: This data is the boundary polygon for the high-resolution bathymetric measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 kmē of sidescan sonar and bathymetric data were collected by the National Oceanic and Atmospheric Administration (NOAA) Ship Whiting in 2000 and 2001 and reprocessed and gridded by the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS). Purpose: The geophysical dataset were collected by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS) branch as part of their periodic hydrographic mapping for nautical charting. The raw datasets were provided by NOAA to the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS) in Woods Hole, MA as part of a cooperative agreement to provide high resolution bathymetry and backscatter intensity maps and digital GIS information for resource management, scientific research, industry and the public. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000919 Ending_Date: 20011030 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.055753 East_Bounding_Coordinate: -70.814613 North_Bounding_Coordinate: 42.438237 South_Bounding_Coordinate: 42.260379 Keywords: Theme: Theme_Keyword_Thesaurus: General 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: Massachusetts Office of Coastal Zone Management Theme_Keyword: CZM Theme_Keyword: Seafloor Theme_Keyword: Marine Geology Theme_Keyword: ESRI Shapefile Theme_Keyword: field activity serial number RAFA04019 Theme_Keyword: Multibeam Theme_Keyword: Bathymetry Theme_Keyword: Reson SeaBat 8101 Theme_Keyword: Reson Theme_Keyword: Topography Theme_Keyword: National Oceanic and Atmospheric Administration Theme_Keyword: NOAA Theme_Keyword: National Ocean Service Theme_Keyword: NOS Theme_Keyword: NOAA Ship Whiting Theme_Keyword: Hydrographic Survey Theme_Keyword: 32-bit floating point Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans and estuaries Theme_Keyword: elevation Theme_Keyword: boundaries Place: Place_Keyword_Thesaurus: General Place_Keyword: Massachusetts Bay Place_Keyword: Atlantic Ocean Place_Keyword: Boston Harbor Place_Keyword: Nahant Place_Keyword: Boston Place_Keyword: Hull Place_Keyword: Hubline Place_Keyword: Boston Harbor Islands Stratum: Stratum_Keyword_Thesaurus: General Stratum_Keyword: Seafloor 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: Seth Ackerman Contact_Organization: Massachusetts Office of Coastal Zone Management Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2315 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Data_Quality_Information: Logical_Consistency_Report: No additional checks for topological consistency were performed on this data. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: All of the NOAA survey vessels were equipped with Trimble DSM212L Differential Global Positioning System (DGPS) receivers. Launch 1005, which collected all of the multibeam bathymetry, was also equipped with a TSS POS/MV Model 320 (Position and Orientation System for Marine Vessels). Standard bathymetric processing, including tide corrections, soundings accuracy, and quality control were done by the NOAA Office of Coast Survey. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Tidal datum for this project is Mean Lower Low Water (MLLW). The tide station at Boston, MA (844-3970) was the control for the vertical datum. Lineage: Source_Information: Type_of_Source_Media: External Hard Drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000919 Ending_Date: 20011030 Source_Currentness_Reference: ground condition Source_Contribution: The original geophysical data for this project were collected during four hydrographic surveys conducted by NOAA NOS in 2000 and 2001 on the NOAA Ship Whiting and its launches 1005/1014. Multibeam bathymetric data were acquired with a Reson SeaBat 8101 and sidescan sonar backscatter data were acquired with Edgetech model 272-T (100 kHz) or the Klein T-5500 (455 kHz) sonar systems. Process_Step: Process_Description: A hull-mounted Reson SeaBat 8101 acquired the shallow-water multibeam data for all four surveys. The Reson 8101 was operated at a frequency of 240 kHz and a maximum speed of 6 knots. The system is designed for operation in water depths of 5 to 125 m, and has a horizontal range of 75 to 500 m that depends on water depth. Each time the system fires or "pings", it collects 101 individual soundings in a swath oriented perpendicular to the vessel track. Acquisition was monitored in real time with the ISIS software (version 5.29) and recorded to XTF format. NOAA Office of Coast Survey converted the XTF data to CARIS HDCS (Hydrographic Data Cleaning System) format, then processed and tide-corrected the data with CARIS HIPS (Hydrographic Information Processing System) software. The CARIS HIPS database was transferred to the USGS/CZM in 2004 for use in this project. Process_Step: Process_Description: Tide-corrected multibeam soundings were exported from CARIS HIPS at a 2-meter grid interval for each of the survey areas and reformatted for input into the Swathed processing software (University of New Brunswick Ocean Mapping Group). The soundings were gridded using the weigh_grid routine creating 2-meter bathymetry grids. The OMG grid format (.r4) was converted to ASCII raster format. Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: Massachusetts Office of Coastal Zone Management Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: c/o 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 x2315 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us Process_Step: Process_Description: The ASCII raster format files were each imported to ArcGIS 9.0 using ArcToolbox ("ASCII to Raster") and then merged to create a master grid of multibeam bathymetry. Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: Massachusetts Office of Coastal Zone Management Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: c/o 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 x2315 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us Process_Step: Process_Description: In ArcMap (Spatial Analyst -> Raster Calculator) evaluated the expression "bh_2mmbbath > -32" the resulting was a temporary file 'calculation' with value = 1 where the multibeam data exists. In ArcMap (Spatial Analyst -> Convert -> Raster to Features) the temp grid 'Calculation' was converted to a polygon shapefile (Input raster: Calculation, Field: Value, Output geometry type: Polygon). Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: Massachusetts Office of Coastal Zone Management Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: c/o 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 x2315 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us 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: 444 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 19 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -69.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000032 Ordinate_Resolution: 0.000032 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: Mean lower low water Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: multibeambathybnds 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: ID Attribute_Definition: Multibeam area id number Attribute: Attribute_Label: Shape_Area Attribute_Definition: Area of feature in meters squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: Massachusetts Office of Coastal Zone Management Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: c/o 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 x2315 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us Resource_Description: Downloadable Data Distribution_Liability: 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. 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: Shapefile Format_Version_Number: ArcGIS 9.x Format_Specification: ESRI Polygon Shapefile File_Decompression_Technique: no compression applied Transfer_Size: 0.982 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Network_Resource_Name: Network_Resource_Name: Offline_Option: Offline_Media: DVD-ROM Recording_Format: UDF Fees: None Technical_Prerequisites: These data are available in Environmental Systems Research Institute (ESRI) Shapefile format. The user must have software capable of importing and processing the data file. Metadata_Reference_Information: Metadata_Date: 20060720 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: Massachusetts Office of Coastal Zone Management Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: c/o 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 x2315 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us 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