1979-1982 Bathymetry Grid of Lower Bay, New York

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: NOAA Coastal Services Center
Publication_Date: 20000531
Title: 1979-1982 Bathymetry Grid of Lower Bay, New York
Edition: One
Geospatial_Data_Presentation_Form: Map
Publication_Information:
Publication_Place: Charleston, South Carolina, USA
Publisher: NOAA Coastal Services Center
Other_Citation_Details:
This data layer was created from the Geophysical Data System (GEODAS) data sets compiled by the National Geophysical Data Center (NGDC) from NOAA hydrographic surveys.

Larger_Work_Citation:
Citation_Information:
Originator: NOAA Coastal Services Center
Publication_Date: 20000531
Title:
Sediment Profile Imaging for New York/New Jersey Harbor for October 1994 to October 1995

Publication_Information:
Publication_Place: Charleston, South Carolina, USA
Publisher: NOAA Coastal Services Center
Online_Linkage:
<http://www.csc.noaa.gov/cgi-bin/crs/BouncePage.cgi?Bounce2=ftp://www.csc.noaa.gov/pub/lcr/nyharbor/lb7982ba.zip&product=230>
Description:
Abstract:
The 1979-1982 Bathymetry Grid of Lower Bay, New York was created for use in the Sediment Profile Imaging for New York/New Jersey Harbor for October 1994 to October 1995 project. Hydrographic survey data were brought into Environmental Systems Research Institute (ESRI), Inc., ArcView geographic information system (GIS) software for visualization. These data represent the newest bathymetric information gathered through the National Ocean Service hydrographic survey from Lower Bay, NY. Depth changes caused by natural and anthropogenic sources can be assessed through comparisons of this dataset to older information.

Purpose:
These data are critical for bathymetric change analysis in Lower Bay, NY. The data layer created from this dataset was used for spatial analysis in the Benthic Habitats of New York/New Jersey Harbor project to estimate changes in bathymetry as a result of natural processes as well as human-induced changes, such as dredging.

Supplemental_Information:
Grid creation involved mathematical interpolation of values for some cells in the data layer. These cell values were calculated from the measured values of the twelve nearest-neighbor cells. Therefore, this data layer represents an estimate of the actual bathymetry of Lower Bay, NY from 1979 to 1982. It is the user's responsibility to determine the appropriate application of this data layer.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1979
Ending_Date: 1982
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -74.277508
East_Bounding_Coordinate: -73.929656
North_Bounding_Coordinate: 40.615711
South_Bounding_Coordinate: 40.402872
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Boundaries
Theme_Keyword: 003
Theme_Keyword: GeoscientificInformation
Theme_Keyword: 008
Theme_Keyword: ImageryBaseMapsEarthCover
Theme_Keyword: 010
Theme_Keyword: Inland Waters
Theme_Keyword: 012
Theme_Keyword: Location
Theme_Keyword: 013
Theme_Keyword: Oceans
Theme_Keyword: 014
Theme_Keyword: PlanningCadastre
Theme_Keyword: 015
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry
Theme_Keyword: Bathymetric data
Theme_Keyword: Depth
Theme_Keyword: Geographic Information Systems
Theme_Keyword: GIS
Theme_Keyword: Grid
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Lower Bay
Place_Keyword: Raritan Bay
Place_Keyword: Sandy Hook Bay
Place_Keyword: New Jersey
Place_Keyword: New York
Place_Keyword: New York Harbor
Place_Keyword: Northeast
Access_Constraints: None
Use_Constraints:
It is the user's responsibility to determine the appropriate use of this data layer.

Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Position:
Landscape Characterization and Restoration (LCR) Program Manager

Contact_Address:
Address_Type: mailing and physical address
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: South Carolina
Postal_Code: 29405
Country: USA
Contact_Voice_Telephone: 843-740-1200
Contact_Facsimile_Telephone: 843-740-1224
Contact_Electronic_Mail_Address: csc@csc.noaa.gov
Hours_of_Service: Monday-Friday, 8am-5pm, Eastern Standard Time
Native_Data_Set_Environment:
ESRI Grid format r:\lcr\linda\ny_cd\gis\grids\lb7982ba
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
No formal tests were performed. The accuracy was tested by comparison of calculated depth values to knowledge of historical depths resulting from dredging activities.
Logical_Consistency_Report: N/A
Completeness_Report:
These data are believed to be complete within the area of interest. All data available from 1979-1982 surveys that occurred within Lower Bay, NY were included in grid creation.

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The data were retrieved from the GEODAS database with latitude/longitude coordinates in decimal degrees referenced to the North American Datum of 1927 (NAD 27). These data were then converted into North American Datum of 1983 (NAD 83) using ArcView's NADCON extension and projected into Universal Transverse Mercator (UTM) Zone 18 prior to grid creation.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The data were referenced to mean low water (MLW) or mean lower low water (MLLW) at the time of collection, regardless of collection year, depending on the survey.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
NOAA National Environmental Satellite, Data, and Information Service (NESDIS)

Publication_Date: 199312
Title: Geophysical Data System (GEODAS) for Hydrographic Survey Data
Edition: Volume 1, Version 3.2
Geospatial_Data_Presentation_Form: tabular digital data
Publication_Information:
Publication_Place: Boulder, Colorado
Publisher:
NOAA National Geophysical Data Centers (NGDC), Marine Geology and Geophysics Division
Online_Linkage: <http://www.ngdc.noaa.gov/mgg/>
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1979
Ending_Date: 1982
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: NGDC
Source_Contribution:
The GEODAS CD-ROM contained the data and retrieval software needed to create this data layer.
Process_Step:
Process_Description:
The data were retrieved from the CD-ROM using the default HYD93 download and tabulated with header information. The table was saved as a DBF file and brought into ArcView as an event theme. It was then converted from NAD 27 to NAD 83 using the NADCON extension and saved as a shapefile. The shapefile was then projected into UTM Zone 18. Grid interpolation was then performed using the Spatial Analyst extension with a mask grid created from a polygon file outlining the area of point coverage.

Source_Used_Citation_Abbreviation: NGDC
Process_Date: 19990516
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Position:
Landscape Characterization and Restoration Program (LCR) Program Manager

Contact_Address:
Address_Type: mailing and physical address
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: South Carolina
Postal_Code: 29405
Country: USA
Contact_Voice_Telephone: 843-740-1200
Contact_Facsimile_Telephone: 843-740-1224
Contact_Electronic_Mail_Address: csc@csc.noaa.gov
Hours_of_Service: Monday-Friday, 8am-5pm, Eastern Standard Time
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 477
Column_Count: 572
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution:
Longitude_Resolution:
Geographic_Coordinate_Units: Decimal Degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6,378,137
Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: ArcView Grid
Entity_Type_Definition: raster grid produced by ArcView Spatial Analyst
Entity_Type_Definition_Source: ESRI
Overview_Description:
Entity_and_Attribute_Overview:
This data layer is a floating point grid, and therefore it does not have an attribute table or set of attributes. The cell value ranges are based on calculated depths in meters, and negative values represent elevation while positive values represent depth.

Entity_and_Attribute_Detail_Citation: none
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Position: Clearinghouse Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: South Carolina
Postal_Code: 29405
Country: USA
Contact_Voice_Telephone: 843-740-1210
Contact_Facsimile_Telephone: 843-740-1224
Contact_Electronic_Mail_Address: csc@csc.noaa.gov
Hours_of_Service: Monday-Friday, 8am-5pm, Eastern Standard Time
Resource_Description: 1979-1982 Bathymetry Grid of Lower Bay, NY
Distribution_Liability:
While every effort has been made to ensure that these data are accurate and reliable within limits of the state of the art, NOAA will not assume any liability for damages caused by any inaccuracies in these data, or failure in their use.

Custom_Order_Process:
For information about obtaining these data, please visit the project home page at <http://www.csc.noaa.gov/cgi-bin/crs/BouncePage.cgi?Bounce2=ftp://www.csc.noaa.gov/pub/lcr/nyharbor/lb7982ba.zip&product=230>
Metadata_Reference_Information:
Metadata_Date: 20000412
Metadata_Review_Date: 20000522
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Position: Metadata Specialist
Contact_Address:
Address_Type: Mailing and physical address
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: South Carolina
Postal_Code: 29405
Country: USA
Contact_Voice_Telephone: 843-740-1200
Contact_Facsimile_Telephone: 843-740-1224
Contact_Electronic_Mail_Address: csc@csc.noaa.gov
Hours_of_Service: Monday-Friday, 8am-5pm, Eastern Standard Time
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version:
FGDC-STD-001-1998 Generated by mp version 2.2.4 on Mon May 22 14:35:07 2000
Generated by mp version 2.8.11 on Thu Dec 16 09:05:23 2004