Bathymetry in fathoms for Massachusetts and adjacent coastal waters (as polygons)

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: The Massachusetts Office of Coastal Zone Management (CZM)
Publication_Date: 20080822
Title:
Bathymetry in fathoms for Massachusetts and adjacent coastal waters (as polygons)
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
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:
These data were developed to form a continuous bathymetry for all Massachusetts state and adjacent waters.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20080813
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -72.016798
East_Bounding_Coordinate: -68.918732
North_Bounding_Coordinate: 43.028499
South_Bounding_Coordinate: 40.971821
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation, 006
Theme_Keyword: oceans, 014
Theme_Keyword: imageryBaseMapsEarthCover, 010
Theme:
Theme_Keyword_Thesaurus: ASFA Thesaurus
Theme_Keyword: bathymetry
Theme_Keyword: depth
Theme:
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:
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:
None. These data are in the public domain. GIS files are freely available for download.
Use_Constraints:
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:
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
Data_Set_Credit:
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:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: n/a
Logical_Consistency_Report:
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:
The data contain bathymetric polygons for the entire geographic extent. There are no known omissions.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
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:
Vertical_Positional_Accuracy_Report:
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:
Source_Information:
Source_Citation:
Citation_Information:
Originator: USGS
Publication_Date: 2006
Title:
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:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts. USGS Open File Report 2005-1293.
Online_Linkage:
http/pubs.usgs.gov/of/2005/1293/gis/OFR_2005_1293/grids/se_5mbath.zip
Source_Information:
Source_Citation:
Citation_Information:
Originator: United States Geological Survey.
Publication_Date: 2006
Title:
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:
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:
Citation_Information:
Originator: United States Geological Survey
Publication_Date: expected Fall 2008
Title:
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:
Source_Citation:
Citation_Information:
Originator:
National Oceanographic and Atmospheric Administration - National Ocean Service
Publication_Date: 19980606
Title:
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:
Citation_Information:
Originator:
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:
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:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Special Projects (SP)
Publication_Date: 19980606
Title:
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:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Special Projects (SP)
Publication_Date: 19980606
Title:
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:
Source_Citation:
Citation_Information:
Originator:
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:
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:
Process_Description:
[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:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth D. Ackerman
Contact_Organization: MA CZM
Contact_Position: Geologist
Process_Step:
Process_Description:
[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:
Contact_Information:
Contact_Person_Primary:
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:
Contact_Person: Seth D. Ackerman
Contact_Organization: MA CZM
Contact_Position: Geologist
Process_Step:
Process_Description: The depth values in meters were converted to integer fathoms.
Process_Date: 20080822
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GIS/Data Managener
Contact_Organization: MA CZM
Process_Step:
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:
Contact_Person_Primary:
Contact_Person: GIS/Data Manager
Contact_Organization: MA CZM
Cloud_Cover: n/a

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: 343203
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 7797
Column_Count: 8634
Vertical_Count: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 2001
Lambert_Conformal_Conic:
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:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
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: bathy_fathoms_poly
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: FATHOMS
Attribute_Definition: Water depth in fathoms.

Distribution_Information:
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:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 76.381
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
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:
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