Bathymetry in fathoms for Massachusetts and adjacent coastal waters (as polygons)
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: The Massachusetts Office of Coastal Zone Management (CZM)
- Publication_Date: 20080822
- Title:
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Bathymetry in fathoms for Massachusetts and adjacent coastal waters (as polygons)
- Geospatial_Data_Presentation_Form: vector digital data
- Description:
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- Abstract:
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These GIS data represent a mosaic bathymetric datasets off waters of the coast of Massachusetts derived from the most current and accurate sources. Data sources include USGS Open File Reports, NOAA Estuarine Bathymetry, and the NOAA Coastal Relief Model. Since these sources vary in spatial resolution from 2m to 90m, 30m was selected to represent a median spatial resolution for mosaicking. The raster mosaic was then
- Purpose:
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These data were developed to form a continuous bathymetry for all Massachusetts state and adjacent waters.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 20080813
- Currentness_Reference: publication date
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -72.016798
- East_Bounding_Coordinate: -68.918732
- North_Bounding_Coordinate: 43.028499
- South_Bounding_Coordinate: 40.971821
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: elevation, 006
- Theme_Keyword: oceans, 014
- Theme_Keyword: imageryBaseMapsEarthCover, 010
- Theme:
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- Theme_Keyword_Thesaurus: ASFA Thesaurus
- Theme_Keyword: bathymetry
- Theme_Keyword: depth
- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: DEM
- Theme_Keyword: digital elevation model
- Theme_Keyword: digital bathymetric model
- Theme_Keyword: digital terrain model
- Theme_Keyword: altitude
- Theme_Keyword: height
- Theme_Keyword: elevation
- Theme_Keyword: hydrographic survey
- Place:
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- Place_Keyword_Thesaurus: Getty Thesaurus of Geographic Names
- Place_Keyword: Massachusetts
- Place_Keyword: Gulf of Maine
- Place_Keyword: Boston
- Place_Keyword: Massachusetts Bay
- Place_Keyword: Cape Cod Bay
- Place_Keyword: Buzzards Bay
- Place_Keyword: Stellwagen Bank
- Access_Constraints:
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None. These data are in the public domain. GIS files are freely available for download.
- Use_Constraints:
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Public domain data from the Massachusetts Office of Coastal Zone Management (CZM), an agency of the Commonwealth of Massachusetts Executive Office of Energy and Environmental Affairs (EOEEA), are freely redistributable with proper metadata and source attribution. Please recognize the Massachusetts Office of Coastal Zone Management as the source of these data. You are not permitted to use CZM's name or to suggest that CZM endorses your project or product, without its express written consent. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CZM cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers. The user must be aware of data conditions and bear responsibility for the appropriate use of these data with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to these data.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: CZM Data Manager
- Contact_Address:
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- Address_Type: Mailing Address
- Address: 251 Causeway Street, Suite 800, Boston, MA 02114-2136
- City: Boston
- State_or_Province: MA
- Postal_Code: 02114-2136
- Country: USA
- Contact_Voice_Telephone: 617-626-1200
- Contact_Facsimile_Telephone: 617-626-1240
- Contact_Electronic_Mail_Address: czm@state.ma.us
- Hours_of_Service: 0900 hrs to 1600 hrs EST
- Contact_Instructions: email only
- Data_Set_Credit:
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These spatial data were created by the Massachusetts Office of Coastal Zone Management (CZM) for the Massachusetts Executive Office of Energy and Environmental Affairs (EOEEA).
- Native_Data_Set_Environment:
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Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report: n/a
- Logical_Consistency_Report:
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The mosaicked data set were checked for bad values (errant soundings) and "ledges" between adjacent data sets representing potential datum conflicts. The data appear to be free from bad values and edgematch well.
- Completeness_Report:
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The data contain bathymetric polygons for the entire geographic extent. There are no known omissions.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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The grid file accuracy reflects the accuracy of the data sources. The following excerpt was taken from the smallest scale data, the NGDC Coastal Relief Model Development for the grid data. The horizontal accuracy of the soundings is generally 30 m, but it can vary from as fine as 15 m in ports and estuaries to as coarse as 75 m in the offshore areas. Differential GPS has improved this level of accuracy considerably for the most recent survey data.
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report:
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Vertical bathymetric accuracy reflects the accuracy of the data sources. The following excerpt was taken from the smallest scale data, the NGDC Coastal Relief Model Development for the grid data. The CRM website states: The vertical accuracy of the soundings is 0.3 m in 0 - 20 m of water, 1.0 m in 20 - 100 m of water, and 1% of the water depth in 100 m of water.
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: USGS
- Publication_Date: 2006
- Title:
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se_5mbath -Nahant to Gloucester, Swath Bathymetry (5 meter/pixel) of the South Essex Survey Area
- Geospatial_Data_Presentation_Form: raster digital data
- Other_Citation_Details:
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High-Resolution Geologic Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts. USGS Open File Report 2005-1293.
- Online_Linkage:
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http/pubs.usgs.gov/of/2005/1293/gis/OFR_2005_1293/grids/se_5mbath.zip
- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: United States Geological Survey.
- Publication_Date: 2006
- Title:
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bh_2mmbbath: Multibeam Bathymetry 2 meter/pixel of Boston Harbor and Approaches from NOAA Hydrographic Surveys
- Geospatial_Data_Presentation_Form: raster digital data
- Other_Citation_Details:
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High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts. USGS Open File Report 2006-1008
- Online_Linkage: <http://pubs.usgs.gov/of/2006/1008/gis/datazipped/mbbath.zip>
- Source_Information:
-
- Source_Citation:
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- Citation_Information:
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- Originator: United States Geological Survey
- Publication_Date: expected Fall 2008
- Title:
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CABATH5M - 5 meter/pixel ArcRaster Bathymetric grid of both the inshore and offshore area of Cape Ann - Salisbury Beach Survey Area
- Geospatial_Data_Presentation_Form: raster digital data
- Other_Citation_Details: From the unpublished USSG Open File Report 2008-1373.
- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator:
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National Oceanographic and Atmospheric Administration - National Ocean Service
- Publication_Date: 19980606
- Title:
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Buzzards Bay, MA (M010) Bathymetric Digital Elevation Model (30 meter resolution) Derived From Source Hydrographic Survey Soundings Collected by NOAA
- Geospatial_Data_Presentation_Form: raster digital data
- Online_Linkage: <http://estuarinebathymetry.noaa.gov/>
- Larger_Work_Citation:
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- Citation_Information:
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- Originator:
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National Oceanographic and Atmospheric Administration - National Ocean Service - Special Projects
- Publication_Date: 1997
- Title: National Ocean Service- Hydrographic Survey Data
- Edition: GEODAS vol 2 ver 3.3
- Other_Citation_Details:
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Title: National Ocean Service- Hydrographic Survey Data
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Boulder, CO
Publisher:
NOAA, National Environmental Satellite, Data and Information Service (NESDIS), National Geophysical Data Center (NGDC)
- Online_Linkage: <http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html>
- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator:
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Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Special Projects (SP)
- Publication_Date: 19980606
- Title:
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Massachusetts Bay, MA (N170) Bathymetric Digital Elevation Model (30 meter resolution) Derived From Source Hydrographic Survey Soundings Collected by NOAA
- Online_Linkage: <http://estuarinebathymetry.noaa.gov/>
- Larger_Work_Citation:
-
- Citation_Information:
-
- Originator:
-
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Special Projects
- Publication_Date: 1997
- Title: National Ocean Service- Hydrographic Survey Data
- Edition: GEODAS vol 2 ver 3.3
- Geospatial_Data_Presentation_Form: map
- Other_Citation_Details:
-
Originator:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Special Projects
Publication_Date: 1997
Title: National Ocean Service- Hydrographic Survey Data
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Boulder, CO
Publisher:
NOAA, National Environmental Satellite, Data and Information Service (NESDIS), National Geophysical Data Center (NGDC)
- Online_Linkage: <http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html>
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
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- Originator:
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Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Special Projects (SP)
- Publication_Date: 19980606
- Title:
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Cape Cod Bay, MA (N180) Bathymetric Digital Elevation Model (30 meter resolution) Derived From Source Hydrographic Survey Soundings Collected by NOAA
- Geospatial_Data_Presentation_Form: raster digital data
- Online_Linkage: <http://estuarinebathymetry.noaa.gov/>
- Larger_Work_Citation:
-
- Citation_Information:
-
- Originator:
-
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Special Projects
- Publication_Date: 1997
- Title: National Ocean Service- Hydrographic Survey Data
- Edition: GEODAS vol 2 ver 3.3
- Geospatial_Data_Presentation_Form: map
- Other_Citation_Details:
-
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Boulder, CO
Publisher:
NOAA, National Environmental Satellite, Data and Information Service (NESDIS), National Geophysical Data Center (NGDC)
- Online_Linkage: <http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html>
- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator:
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National Oceanic and Atmospheric Administration (NOAA), National Geophysical Data Center (NGDC)
- Publication_Date: 20010907
- Title: Coastal Relief Model, Volume 1 (U.S. Northeast Atlantic Coast)
- Other_Citation_Details:
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The National Geophysical Data Center assembled a gridded database referred to as the Coastal Relief Model (CRM). NGDC created the comprehensive data set by merging the U.S. Geological Survey 3-arc-second DEMs with a compilation of hydrographic soundings covering the US East Coast. The Coastal Relief Model extends from the coastal state boundaries to as far offshore as the data will support a continuous view of the seafloor.
- Online_Linkage: <http://www.ngdc.noaa.gov/mgg/coastal/coastal.html>
- Source_Scale_Denominator: 50000
- Process_Step:
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- Process_Description:
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[IVS Fledermaus v6.7 - DMagic] - Import ascii gridded data. All data available in USGS Open File Reports or downloaded from NOAA websites (all input data projected UTM zone 19N)
Boston Harbor (2m and 30m bathymetry from USGS OFR 2006-1008)
Nahant to Gloucester (5m bathymetry from USGS OFR 2005-1293)
Cape Ann to Salisbury Beach (5m bathymetry from USGS OFR 2008-1373 -- expected Fall 2008)
Western Mass Bay & Stellwagen Bank (10m bathymetry from USGS DS-99)
NOAA Estuarine Bathymetry N170 (30m bathymetry from Massachusetts Bay)
NOAA Estuarine Bathymetry N180 (30m bathymetry from Cape Cod Bay)
NOAA Estuarine Bathymetry M010 (30m bathymetry from Buzzards Bay)
NOAA Coastal Relief Model (90m bathymetry subset from Volume 1 US North East Atlantic Coast - no land, bathy only)
- Process_Date: 20080727
- Process_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Seth D. Ackerman
- Contact_Organization: MA CZM
- Contact_Position: Geologist
- Process_Step:
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- Process_Description:
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[IVS Fledermaus v6.7 - FMCommand] - dtmmerge to combine the input bathymetry datasets (see command below).
dtmmerge -in BostonHarbor_2m.dtm BostonHarbor_30m.dtm CapeAnn_5m.dtm crm_new_utm_bathy.dtm M010_BuzzBay.dtm massbay_stell_10m.dtm N170_MassBay.dtm N180_CapeCodBay.dtm NahantGloucester_5m.dtm -out MA_merge_v2.dtm -cellsize 30 -mode highres
- Process_Date: 20080727
- Process_Contact:
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- Contact_Information:
-
- Contact_Person_Primary:
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- Contact_Person: Seth D. Ackerman
- Contact_Organization: MA CZM
- Contact_Position: Geologist
- Process_Step:
-
- Process_Description:
-
[IVS Fledermaus v6.7 - DMagic] - Exported merged DTM as ASCII ArcView Grid.
- Process_Date: 20080727
- Process_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
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- Contact_Person: Seth D. Ackerman
- Contact_Organization: MA CZM
- Contact_Position: Geologist
- Process_Step:
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- Process_Description: The depth values in meters were converted to integer fathoms.
- Process_Date: 20080822
- Process_Contact:
-
- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: GIS/Data Managener
- Contact_Organization: MA CZM
- Process_Step:
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- Process_Description:
-
The integer fathom raster data were converted to vector polygons using the Raster to Feature Class tool in Spatial Analyst with the Simply Polygon option selected.
- Process_Date: 20080822
- Process_Contact:
-
- Contact_Information:
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- Contact_Person_Primary:
-
- Contact_Person: GIS/Data Manager
- Contact_Organization: MA CZM
- Cloud_Cover: n/a
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: G-polygon
- Point_and_Vector_Object_Count: 343203
- Raster_Object_Information:
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- Raster_Object_Type: Grid Cell
- Row_Count: 7797
- Column_Count: 8634
- Vertical_Count: 1
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: State Plane Coordinate System 1983
- State_Plane_Coordinate_System:
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- SPCS_Zone_Identifier: 2001
- Lambert_Conformal_Conic:
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- Standard_Parallel: 41.716667
- Standard_Parallel: 42.683333
- Longitude_of_Central_Meridian: -71.500000
- Latitude_of_Projection_Origin: 41.000000
- False_Easting: 200000.000000
- False_Northing: 750000.000000
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.000000
- Ordinate_Resolution: 0.000000
- Planar_Distance_Units: meters
- Geodetic_Model:
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- 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:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: bathy_fathoms_poly
- Attribute:
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- Attribute_Label: FID
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Sequential unique whole numbers that are automatically generated.
- Attribute:
-
- Attribute_Label: Shape
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
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- Attribute_Label: FATHOMS
- Attribute_Definition: Water depth in fathoms.
- Distribution_Information:
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- Distributor:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: CZM Data Manager
- Contact_Address:
-
- Address_Type: Mailing Address
- Address: 251 Causeway Street, Suite 800, Boston, MA 02114-2136
- City: Boston
- State_or_Province: MA
- Postal_Code: 02114-2136
- Country: USA
- Contact_Voice_Telephone: 617-626-1200
- Contact_Facsimile_Telephone: 617-626-1240
- Contact_Electronic_Mail_Address: czm@state.ma.us
- Hours_of_Service: 0900 hrs to 1600 hrs EST
- Contact_Instructions: email only
- Resource_Description: Downloadable Data
- Distribution_Liability:
-
Although every effort has been made to ensure the accuracy of these data, errors and conditions originating from physical sources used to develop these data may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. In no event shall CZM be liable for any damages, whether general, special, incidental or consequential damages, arising out of your use of these data. Your sole remedy for damages is to stop using the data. You agree to defend, indemnify, and hold harmless CZM and its employees against any claim, loss, liability or expense, including attorneys' fees, resulting from loss of or damage to property or the injury to or death of any person arising out of the use of the data.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Transfer_Size: 76.381
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name: <http://www.mass.gov/czm/czm.htm>
- Fees:
-
GIS and coordinate files may be downloaded at no charge by following links on the Massachusetts Office of Coastal Zone Management website (<http://www.mass.gov/czm/>).
- Metadata_Reference_Information:
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- Metadata_Date: 20080919
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: CZM Data Manager
- Contact_Address:
-
- Address_Type: Mailing Address
- Address: 251 Causeway Street, Suite 800, Boston, MA 02114-2136
- City: Boston
- State_or_Province: MA
- Postal_Code: 02114-2136
- Country: USA
- Contact_Voice_Telephone: 617-626-1200
- Contact_Facsimile_Telephone: 617-626-1240
- Contact_Electronic_Mail_Address: czm@state.ma.us
- Hours_of_Service: 0900 hrs to 1600 hrs EST
- Contact_Instructions: email only
- Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: local time
- Metadata_Extensions:
-
- Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
- Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Fri Sep 19 16:15:28 2008