Approved Maritime Limits for Wake Island

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS)
Publication_Date: 20070112
Title: Approved Maritime Limits for Wake Island
Edition: v. 1.0
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Silver Spring, Maryland
Publisher: NOAA's Ocean Service, Office of Coast Survey (OCS)
Online_Linkage: <http://nauticalcharts.noaa.gov/csdl/mbound.htm>
Description:
Abstract:
NOAA's Office of Coast Survey (OCS) is responsible for generating the Three Nautical Mile Line, Territorial Sea, Contiguous Zone, and Exclusive Economic Zone (EEZ). Traditionally, these maritime limits have been generated by hand from the low water line depicted on paper, U.S. nautical charts. Upon final approval by the U.S. Baseline Committee, these official maritime limits are applied to the next edition of nautical charts produced by the Marine Chart Division of OCS.
Due to new cartographic production processes and the availability of digital products such as Electronic Navigational Charts (ENCs), OCS has developed improved techniques for generating more accurate, digital maritime limits. Through the use of Geographic Information Systems (GIS) software such as CARIS' LOTS and ESRI's ArcGIS, the latest vector representations of these limits will be available to NOAA cartographers and the public.
To create digital limits, the charted low water line is captured digitally and used as input to CARIS' LOTS: Limits and Boundaries software for the designation of a baseline. Once the limits are created, they are exported to a shapefile file using CARIS' Import SHP utility. These polyline shapefiles are contained within a zipped file.
Purpose:
This dataset is to be used as the source for the depiction of maritime limits on NOAA's paper nautical chart and electronic navigational chart. The maritime limits were constructed from baseline points that represent the most seaward, drying features at mean lower low water on NOAA's largest scale, latest edition, paper nautical charts of the area. These digital boundaries do NOT represent the official depiction of the maritime limits.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2006
Ending_Date: 2007
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Continually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 166.17
East_Bounding_Coordinate: 167.08
North_Bounding_Coordinate: 19.73
South_Bounding_Coordinate: 18.87
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: GIS
Theme_Keyword: Boundary
Theme_Keyword: Baseline
Theme_Keyword: Limits
Theme_Keyword: Three Nautical Mile Line
Theme_Keyword: Maritime
Theme_Keyword: Law of the Sea
Theme_Keyword: Territorial Sea
Theme_Keyword: Contiguous Zone
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Boundaries
Theme_Keyword: Planning Cadastre
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Wake Island
Place_Keyword: Wake Island Boat Basin
Place_Keyword: Wilkes Island
Place_Keyword: Peale Island
Place_Keyword: North Pacific Ocean
Access_Constraints: NONE
Use_Constraints: NOT FOR LEGAL USE
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS)
Contact_Position: Chief Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East-West Highway N/CS
City: Silver Spring
State_or_Province: Maryland
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-2780 x127
Contact_Facsimile_Telephone: (301) 713-4019
Contact_Electronic_Mail_Address: Meredith.Westington@noaa.gov
Hours_of_Service: Monday - Friday, 0900 EST - 1700 EST
Native_Data_Set_Environment:
CARIS' Law of the Sea: Limits and Boundaries v. 4.06 Hotfix 3, Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
In CARIS LOTS, one working mapping file was used for the project area of Wake Island. The map projection was set to Mercator with a 0.001 meter X/Y resolution. The scaling latitude used for the CARIS map was determined by finding the midpoint between the northeast and southwest bounding coordinates of the project area. The baseline points were derived from the largest scale charts. As NOAA's raster nautical charts were brought into the CARIS environment, the CARIS map was reprojected on the fly to match the chart's projection, and heads-up digitizing in the CARIS environment was performed. The attributes established in LOTS were SourceDoc and Limit. The SourceDoc values reflect the nautical chart or hydrographic survey number upon which the baseline points were taken and are assumed to be accurate. No added tests were conducted.
Logical_Consistency_Report:
The data, which reflects the largest scale nautical charts or hydrographic surveys of the area, are believed to be logically consistent.
Completeness_Report:
The maritime limits are complete for Wake Island. The limits may be updated at a later date if the charted depiction of the farthest seaward low-water mark changes. These limits were created for internal purposes only to improve the accuracy of the charted maritime limits. These limits do not represent the official depiction of these maritime limits. For the official depiction of the limits, please see NOAA's paper or raster nautical charts.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
No specific test was performed on the dataset. The data is a reflection of the largest scale raster nautical charts of the area. In some cases, hydrographic surveys were referenced to determine if charted features such as rocks awash were drying at mean lower low water. The number of decimal places used in the output format does not imply an accuracy level higher than the source chart documents.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The maritime limits are projected from a designated baseline. Points representing the baseline are referenced from the farthest seaward low-water mark as depicted on the largest scale, raster nautical charts. No specific test was used to determine the vertical accuracy of the points.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS)
Publication_Date: 1998
Title:
Maptech's BSB-format raster nautical charts for Wake Island: 81664_1, 81664_2
Edition: latest edition
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Silver Spring, Maryland
Publisher: NOAA's Ocean Service, Office of Coast Survey (OCS)
Online_Linkage: <http://nauticalcharts.noaa.gov/mcd/Raster/Index.htm>
Source_Scale_Denominator: 3,500
Type_of_Source_Media: raster nautical chart
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: BSB
Source_Contribution:
The maritime limits are created from normal baseline points. Points representing the baseline are referenced from the farthest seaward low-water mark as depicted on the largest scale, paper nautical charts. NOAA's raster nautical charts were used as backdrops in the CARIS map. As these charts were brought into the CARIS environment, the CARIS map was reprojected on the fly to match the chart's projection. The latest edition charts were used as referenced in the citation information section above. The dates of these latest editions were current as of 2006.
Process_Step:
Process_Description:
The latest edition, largest scale charts were used to create a continuous vector low water line from which baseline points would be chosen from. The hydrographic surveys and descriptive reports were used as secondary source materials from which charted asterisk rock symbols (rocks awash) were verified to dry at mean lower low water. In the LOTS environment, the "Envelope of Arcs from Normal Points" tool was applied to the cleaned low water line and any additional rock features. As input to the "Envelope of Arcs" tool, OCS selected the limit distance in nautical miles and designated the attributes for the baseline points. This tool generated the contributing baseline points and the boundary limit using a wagon-wheel filtering process of rolling a circle with a diameter specified by the limit distance and choosing the seaward-most points along the low water line.
Source_Used_Citation_Abbreviation: BSB
Process_Date: 200610 through 200701
Source_Produced_Citation_Abbreviation: BASEBOUNDS
Process_Step:
Process_Description:
The resulting limits were attributed in CARIS and exported using the "Import SHP" utility in CARIS. The polyline was exported from CARIS LOTS as WGS84. The limits were further attributed in ArcView 3.2a.
Source_Used_Citation_Abbreviation: BASEBOUNDS
Process_Date: 200612 through 200701
Source_Produced_Citation_Abbreviation: SUBJECTDATASET
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: .001
Longitude_Resolution: .001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: World Geodetic System 1984
Ellipsoid_Name: World Geodetic System 1984
Semi-major_Axis: 6,378,137.0
Denominator_of_Flattening_Ratio: 298.26
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Maritime Limits
Entity_Type_Definition: Shapefile Attribute Table
Entity_Type_Definition_Source: None
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: LIMIT
Attribute_Definition: Limit identifier
Attribute_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Three Nautical Mile Line
Enumerated_Domain_Value_Definition: Three Nautical Mile Line (old Territorial Sea)
Enumerated_Domain_Value_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Territorial Sea
Enumerated_Domain_Value_Definition: Territorial Sea
Enumerated_Domain_Value_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Contiguous Zone
Enumerated_Domain_Value_Definition: Contiguous Zone
Enumerated_Domain_Value_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Exclusive Economic Zone
Enumerated_Domain_Value_Definition: Exclusive Economic Zone
Enumerated_Domain_Value_Definition_Source: Office of Coast Survey
Attribute:
Attribute_Label: LOCATION
Attribute_Definition: Identifier of feature within a state or territory
Attribute_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Contains free text for location descriptions as a subset of the state or territory, for example "St. Croix" of the U.S. Virgin Islands.
Attribute:
Attribute_Label: APPRVDATE
Attribute_Definition:
Approval date of baseline points by the ad hoc Committee on the U.S. Baseline
Attribute_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Date Field formatted as YYYYMMDD for the date on which the limits were approved by the U.S. Baseline Committee, chaired by the Department of State.
Attribute:
Attribute_Label: SRCSCALE
Attribute_Definition:
The range of scales of source documents from which the limits are projected.
Attribute_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Text Field showing the scale range for the source documents. For example 1: "10,000-80,000".
Attribute:
Attribute_Label: SRCBEGINYR
Attribute_Definition:
Beginning publication date of source documents formatted in YYYY.
Attribute_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Date Field formatted as YYYY for the beginning publication date of the source documents.
Attribute:
Attribute_Label: SRCENDYR
Attribute_Definition: Ending publication date of source documents formatted in YYYY.
Attribute_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Date Field formatted as YYYY for the ending publication date of the source documents.
Attribute:
Attribute_Label: SRCDATUM
Attribute_Definition:
Datum of the source documents from which the limits are projected.
Attribute_Definition_Source: Office of Coast Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Text description of the datum for determining the limits. For example "NAD83/WGS84".
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS)
Contact_Position: Chief Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East-West Highway N/CS
City: Silver Spring
State_or_Province: Maryland
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-2780 x127
Contact_Facsimile_Telephone: (301) 713-4019
Contact_Electronic_Mail_Address: Meredith.Westington@noaa.gov
Hours_of_Service: Monday - Friday, 0900 EST - 1700 EST
Resource_Description: Downloadable Data
Distribution_Liability:
Users must assume responsibility to determine the appropriate use of this data set. These digital maritime limits do not represent the official depiction of the maritime limits. The official depiction still remains the depiction on NOAA's nautical charts. Please contact the Chief Geographer for more detailed information, if required.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SHP (ESRI polyline shapefile)
Format_Version_Date: 20070601
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://nauticalcharts.noaa.gov/csdl/mbound.htm>
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20080212
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS)
Contact_Position: Chief Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East-West Highway N/CS
City: Silver Spring
State_or_Province: Maryland
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-2780 x127
Contact_Facsimile_Telephone: (301) 713-4019
Contact_Electronic_Mail_Address: Meredith.Westington@noaa.gov
Hours_of_Service: Monday - Friday, 0900 EST - 1700 EST
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Generated by mp version 2.9.2 on Tue Feb 12 16:48:32 2008