Depth Sounding Points covering Northern Alaska, USA and Northwest Canada

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Allison Graves Gaylord
Publication_Date: 20051231
Title:
Depth Sounding Points covering Northern Alaska, USA and Northwest Canada
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Fairbanks, AK
Publisher: Geographic Information Network of Alaska (GINA), Geophysical Institute, Univeristy of Alaska-Fairbanks
Online_Linkage: http://mms.gina.alaska.edu
Description:
Abstract:
412,487 depth soundings were acquired from various sources covering the nearshore and offshore area between Wainwright, Alaska east to Mackenzie Bay, Canada. For Alaska, the GEODAS (GEOphysical DAta System) depth soundings acquired from the National Geophysical Data Center (NGDC) were the primary data source. This information was supplemented with depth soundings derived from the NOAA Electronic Nautical Chart for the Beaufort Sea and the United States Minerals Management Service (Outer Continental Shelf Study MMS 2002-017). In addition, depth soundings in feet below mean lower low water (MLLW) were digitized from the July 28, 1990 (1:47943 scale) NOAA #16082 nautical chart for Point Barrow. The Canadian sounding data extending to the Mackenzie Delta were derived from the Digital Ocean product created by Nautical Data International for the Canadian Hydrographic Service (Mackenzie Bay Chart 7662 and Demarcation Bay To Philips Bay Chart 7661.)  Soundings from the International Bathymetric Chart of the Arctic Ocean (IBCAO) sheet 3 were incorporated primarily for coverage of the offshore area.  The units of these data sets have been standardized in meters.
Purpose:
This data was compiled for the US Mineral Management Service:  Mapping and Characterization of Recurring Spring Leads and Landfast ice in the Beaufort and Chukchi Seas (AK-03-06).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1937
Beginning_Time: unknown
Ending_Date: 2004
Ending_Time: unknown
Currentness_Reference:
publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -160.813048
East_Bounding_Coordinate: -133.824195
North_Bounding_Coordinate: 72.620297
South_Bounding_Coordinate: 68.714097
Keywords:
Theme:
Theme_Keyword_Thesaurus: ArcIMS Metadata Server Theme Codes
Theme_Keyword: bathymetry
Theme_Keyword: environment
Theme_Keyword: location
Theme_Keyword: oceans
Theme_Keyword: depth
Place:
Place_Keyword_Thesaurus: None.
Place_Keyword: Arctic Ocean
Place_Keyword: Chukchi Sea
Place_Keyword: Beaufort Sea
Place_Keyword: North Slope
Place_Keyword: Alaska
Place_Keyword: Canada
Access_Constraints: None.
Use_Constraints:
Any hardcopies or published datasets utilizing these data sets shall clearly indicate their source.  If the user has modified the data in any way they are obligated to describe the types of modifications that they have performed.  User specifically agrees not to misrepresent these datasets, nor to imply that any changes that they made were approved by the University of Alaska.  Canadian sounding information is copyright  Her Majesty the Queen in Right of Canada Canadian Hydrographic Service.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Geophysical Institute
Contact_Person: Hajo Eicken
Contact_Position: Principal Investigator
Contact_Address:
Address_Type: mailing and physical address
Address:
903 Koyukuk Drive
City: Fairbanks
State_or_Province: Alaska
Postal_Code: 99775
Country: USA
Contact_Voice_Telephone: 907-474-7280
Contact_Electronic_Mail_Address: hajo.eicken@gi.alaska.edu
Browse_Graphic:
Browse_Graphic_File_Name: *.jpg
Browse_Graphic_File_Description:
Low resolution thumbnail image
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
The funding for this effort was provided by the US Mineral Management Service for Mapping and Characterization of Recurring Spring Leads and Landfast ice in the Beaufort and Chukchi Seas (AK-03-06, MMS-71707)
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack4; ESRI ArcCatalog 8.3.0800
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data sources lacked metadata.  However, contacts were made via email to confirm the units used for depth values (feet or meters.)  The depth values from various sources were spot checked to confirm consistency between sources.
Logical_Consistency_Report:
Each file was visually checked in ArcGIS to confirm placement, projection definition and attribute values (depth).
Completeness_Report:
Complete.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The source files contained no metadata.  The sources were cross checked in ArcMap to confirm that the depth values were sensible.  The source data was compiled over the course of 60+ years so it is assumed that varying techniques were employed to obtain depth values and that nearshore sediment changes are a factor in assessing the accuracy.  Only a rough estimate of the horizontal accuracy can be made.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 300
Horizontal_Positional_Accuracy_Explanation:
None
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The source files contained no metadata.  The sources were cross checked in ArcMap to confirm that the depth values were sensible.  The source data was compiled over the course of 60+ years so it is assumed that varying techniques were employed to obtain depth values and that nearshore sediment changes are a factor in assessing the accuracy.  Only a rough estimate of the vertical accuracy can be made.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 20
Vertical_Positional_Accuracy_Explanation:
None
Lineage:
Process_Step:
Process_Description:
Sounding data was extracted from a variety of sources using ESRI software (ENC Charter Reade for ArcView 3xr) and GEODAS software.  Attribute values were calculated to depth in meters and merged into a master file using ArcGIS software.
Process_Date: 200505
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Allison Graves Gaylord
Contact_Organization: Nuna Technologies
Contact_Position: Owner / GIS Specialist
Contact_Address:
Address_Type: mailing address
Address:
POB 1483
City: Homer
State_or_Province: AK
Postal_Code: 99603
Country: USA
Contact_Voice_Telephone: 907.235.3476
Contact_Electronic_Mail_Address: nunatech@usa.net
Hours_of_Service: business hours
Process_Step:
Process_Description:
Dataset copied.
Source_Used_Citation_Abbreviation:
C:\MMS\Bathy\Export\Soundings
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 412487
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 55.000000
Standard_Parallel: 65.000000
Longitude_of_Central_Meridian: -154.000000
Latitude_of_Projection_Origin: 50.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.002048
Ordinate_Resolution: 0.002048
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_Clarke_1866
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.400000
Denominator_of_Flattening_Ratio: 294.978698
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Soundings
Entity_Type_Definition:
Point Attribute Table
Entity_Type_Definition_Source:
ESRI
Attribute:
Attribute_Label: FID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FID
Enumerated_Domain_Value_Definition:
Feature Identifier
Enumerated_Domain_Value_Definition_Source:
ESRI
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Shape
Enumerated_Domain_Value_Definition:
Feature Geometry
Enumerated_Domain_Value_Definition_Source:
ESRI
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: X_COORD
Attribute_Definition:
Longitude
Attribute_Definition_Source:
Nuna Technologies
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: X_COORD
Enumerated_Domain_Value_Definition:
Longitude
Enumerated_Domain_Value_Definition_Source:
Nuna Technologies
Attribute:
Attribute_Label: Y_COORD
Attribute_Definition:
Latitude
Attribute_Definition_Source:
Nuna Technologies
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Y_COORD
Enumerated_Domain_Value_Definition:
Latitude
Enumerated_Domain_Value_Definition_Source:
Nuna Technologies
Attribute:
Attribute_Label: DEPTH_M
Attribute_Definition:
Depth In Meters
Attribute_Definition_Source:
Nuna Technologies
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEPTH_M
Enumerated_Domain_Value_Definition:
Depth in Meters
Enumerated_Domain_Value_Definition_Source:
Nuna Technologies
Attribute:
Attribute_Label: POINT_X
Attribute_Definition:
Longitude (Albers Equal Area Projection)
Attribute_Definition_Source:
Nuna Technologies
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: POINT_X
Enumerated_Domain_Value_Definition:
Longitude (Albers Equal Area Projection)
Enumerated_Domain_Value_Definition_Source:
Nuna Technologies
Attribute:
Attribute_Label: POINT_Y
Attribute_Definition:
Latitude (Albers Equal Area Projection)
Attribute_Definition_Source:
Nuna Technologies
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: POINT_Y
Enumerated_Domain_Value_Definition:
Latitude (Albers Equal Area Projection)
Enumerated_Domain_Value_Definition_Source:
Nuna Technologies
Overview_Description:
Entity_and_Attribute_Overview:
The depth in meters is the only unique attribute associated with this data.  Other attributes are ESRI defaults for the shapefile format and fields associated with latitude and longitude in both the geographic coordinate systems and Albers Equal Area map projection for Alaska.
Entity_and_Attribute_Detail_Citation:
The depth in meters has been expressed in numeric values.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: UAF Geographic Information Network of Alaska (GINA)
Contact_Person: Dr. Virgil (Buck) Sharpton
Contact_Position: President's Professor of Remote Sensing
Contact_Address:
Address_Type: mailing and physical address
Address:
903 Koyukuk Drive
City: Fairbanks
State_or_Province: Alaska
Postal_Code: 99775-7320
Country: USA
Contact_Voice_Telephone: 907.474.6663
Contact_Electronic_Mail_Address: buck.sharpton@gina.alaska.edu
Hours_of_Service: 8:00 a.m. - 5:00 p.m. AST
Resource_Description: Downloadable Data
Distribution_Liability:
The University of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any users purposes. In no event will the University of Alaska be liable for any incidental, indirect, special, consequential or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof or otherwise, and in no event will the State of Alaska s liability to the requestor or anyone else exceed the fee paid for the electronic service or product.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: GeoTiff
Format_Version_Date: 200301101
Format_Specification:
AVHRR Level 1b
Transfer_Size: 51.945
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://ion.gina.alaska.edu/sv/
Fees: none
Available_Time_Period:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1972
Ending_Date: unknown
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Metadata_Reference_Information:
Metadata_Date: 20031116
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nuna Technologies
Contact_Person: Allison Graves Gaylord
Contact_Position: Owner/GIS Specialist
Contact_Address:
Address_Type: mailing address
Address:
P.O. Box 1483
City: Homer
State_or_Province: Alaska
Postal_Code: 99603-1483
Country: USA
Contact_Voice_Telephone: 907.399.1120
Contact_Electronic_Mail_Address: nunatech@usa.net
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:
If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the University of Alaska.
Metadata_Security_Information:
Metadata_Security_Classification_System: None.
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description:
None.
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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