1 Identification Information

1.1 Citation Information:

8.1 Originator: The Geological Society of America

8.2 Publication Date: 1974

8.4 Title:

Bathymetric Map of the Bering Shelf

8.6 Data Presentation Form: Map

8.8.1 Publication Place:

Boulder, Colorado

8.8.2 Publisher:

The Geological Society of America, 3300 Penrose Pl., Boulder, CO 80301

8.9 Other Citation Details:

map compiled by Richard Pratt and Fred Walton, National Ocean Service

1.2 Description

1.2.1 Abstract:

Bathymetric contours were generated from soundings collected during surveys and cruises by the Hydrographic Office, National Ocean Survey, and Coast and Geodetic Survey. The region covered by the map is the Bering Sea Shelf from Bristol Bay, Alaska to the Gulf of Anadyr, Russia. Bathymetry is in meters at 10 m intervals, with 5 m supplemental contours. The digitized portion includes the Anadyr Gulf and Bering Strait in Russian waters (west of the Exclusive Economic Zone), to supplement digitized National Ocean Service maps of US waters (Coastal Shelf Bathymetry of the Bering, Chukchi, and Beaufort Seas).

1.2.2 Purpose:

The map was produced by The Geological Society of America during a period of mineral and seismic exploration in the Bering Sea.

1.2.3 Supplemental Information:

The completed coverage is stored on ASC workstation GULO in the following directory: /gulo1/ecosys/bathy/final. The coverage is titled ANADBATH_3GEO (anad=Anadyr Gulf, bath=bathymetry, 3=polygon topology, geo=geographic projection)

1.3 Time Period Of Content

1.4 Status

1.4.1 Progress: Complete

1.5 Geographic Extent

1.5.1 Description of Geographic Extent:

western Russia waters of the Anadyr Gulf and Bering Strait

1.5.2 Bounding Rectangle Coordinates

1.5.2.1 West Bounding Coordinate: -180

1.5.2.2 East Bounding Coordinate: -168

1.5.2.3 North Bounding Coordinate: 66

1.5.2.4 South Bounding Coordinate: 60

1.6 Keywords

1.6.1.1 Theme Keyword Thesaurus: None

1.6.1.2 Theme Keyword: bathymetry

1.6.2.1 Place Keyword Thesaurus: None

1.6.2.2 Place Keyword: western Alaska

1.6.2.2 Place Keyword: eastern Russia

1.6.2.2 Place Keyword: Anadyr Gulf

1.6.2.2 Place Keyword: Bering Sea shelf

1.10 Point of Contact

10.2 Contact Organization Primary

10.1.2 Contact Organization: Alaska Science Center, Marine and Fresh Water Ecology Branch

10.4 Contact Address

10.4.1 Address Type: Mailing and Physical Address

10.4.2 Address: Biological Resources Division, U.S. Geological Survey

10.4.2 Address: 1011 E. Tudor Road

10.4.3 City: Anchorage

10.4.4 State or Province: Alaska

10.4.5 Postal Code: 99503

10.4.6 Country: USA

10.5 Contact Voice Telephone: (907) 786-3512

10.7 Contact Facsimile Telephone: (907) 786-3636

10.9 Hours of Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday

10.10 Contact Instructions: None

1.15 Cross Reference

8.1 Originator: National Ocean Service

8.1 Originator: US Dept. of Commerce

8.2 Publication Date: Multiple

8.4 Title:

Coastal Shelf Bathymetry of the Bering, Chukchi, and Beaufort Seas

8.6 Data Presentation Form: Map

8.7.1 Series Name: Bathymetric Maps

8.8.1 Publication Place:

Washington D.C.

8.8.2 Publisher:

U.S. Department of Commerce, NOAA, NOS

8.9 Other Citation Details:

maps available for purchase from National Geophysical Data Center, E/GC3, 325 Broadway, Boulder, Colorado 80303-3228

8.1 Originator: United States Geological Survey

8.2 Publication Date: 1976

8.4 Title:

Plate 1. Topographic and Bathymetric map of the Northern Bering Sea Region

8.7.1 Series Name: Geological Survey Professional Paper

8.7.2 Issue Identification: 759-B

8.8.1 Publication Place:

Washington D.C.

8.8.2 Publisher:

U. S. Government Printing Office

8.9 Other Citation Details:

Hopkins, D. M., C. H. Nelson, R. B. Perry, and T. R. Alpha. 1976. Physiographic subdivisions of the Chirikov Basin, Northern Bering Sea (studies on the marine geology of the Bering Sea). Geological Survey Professional Paper 759-B. U.S. Government Printing Office. 7pp. 3 plates.

8.1 Originator: United States Geological Survey

8.2 Publication Date: 1984

8.4 Title:

Bathymetric map of the Chukchi Sea

8.7.1 Series Name: Miscellaneous Investigations Series

8.7.2 Issue Identification: Map I-1182-D

8.8.2 Publisher:

United States Geological Survey

8.9 Other Citation Details:

Hill, E. R., A. Grantz, S. D. May, and M. Smith. 1984. Bathymetric map of the Chukchi Sea. U.S. Geological Survey, Misc. Inves. Series I-1182-D.

8.1 Originator: United States Geological Survey

8.2 Publication Date: 1976

8.4 Title:

Bathymetric Map of the Chukchi Sea and Arctic Ocean & Bathymetric Map of the Aleutian Trench and Bering Sea

8.7.1 Series Name: Open File Report

8.7.2 Issue Identification: 76-821 and 76-823

8.8.1 Publication Place:

Washington D.C.

8.8.2 Publisher:

U.S. Geological Survey

8.9 Other Citation Details:

Schumacher, G. M. 1976. Bathymetric map of the Chukchi Sea and Arctic Ocean. USGS Open File Report 76-823. Schumacher, G. M. 1976. Bathymetric map of the Aleutian Trench and Bering Sea. USGS Open File Report 76-821.

8.1 Originator: United States Geological Survey

8.2 Publication Date: 1976

8.4 Title:

Plate 1. Topographic and Bathymetric map of the Northern Bering Sea Region

8.7.1 Series Name: Geological Survey Professional Paper

8.7.2 Issue Identification: 759-B

8.8.1 Publication Place:

Washington D.C.

8.8.2 Publisher:

U. S. Government Printing Office

8.9 Other Citation Details:

Hopkins, D. M., C. H. Nelson, R. B. Perry, and T. R. Alpha. 1976. Physiographic subdivisions of the Chirikov Basin, Northern Bering Sea (studies on the marine geology of the Bering Sea). Geological Survey Professional Paper 759-B. U.S. Government Printing Office. 7pp. 3 plates.

8.1 Originator: United States Geological Survey

8.2 Publication Date: 1976

8.4 Title:

Bathymetric Map of the Chukchi Sea and Arctic Ocean & Bathymetric Map of the Aleutian Trench and Bering Sea

8.7.1 Series Name: Open File Report

8.7.2 Issue Identification: 76-821 and 76-823

8.8.1 Publication Place:

Washington D.C.

8.8.2 Publisher:

U.S. Geological Survey

8.9 Other Citation Details:

Schumacher, G. M. 1976. Bathymetric map of the Chukchi Sea and Arctic Ocean. USGS Open File Report 76-823. Schumacher, G. M. 1976. Bathymetric map of the Aleutian Trench and Bering Sea. USGS Open File Report 76-821.

8.1 Originator: National Ocean Service

8.1 Originator: US Dept. of Commerce

8.2 Publication Date: Multiple

8.4 Title:

Coastal Shelf Bathymetry of the Bering, Chukchi, and Beaufort Seas

8.6 Data Presentation Form: Map

8.7.1 Series Name: Bathymetric Maps

8.8.1 Publication Place:

Washington D.C.

8.8.2 Publisher:

U.S. Department of Commerce, NOAA, NOS

8.9 Other Citation Details:

maps available for purchase from National Geophysical Data Center, E/GC3, 325 Broadway, Boulder, Colorado 80303-3228

8.1 Originator: United States Geological Survey

8.2 Publication Date: 1984

8.4 Title:

Bathymetric map of the Chukchi Sea

8.7.1 Series Name: Miscellaneous Investigations Series

8.7.2 Issue Identification: Map I-1182-D

8.8.2 Publisher:

United States Geological Survey

8.9 Other Citation Details:

Hill, E. R., A. Grantz, S. D. May, and M. Smith. 1984. Bathymetric map of the Chukchi Sea. U.S. Geological Survey, Misc. Inves. Series I-1182-D.

2 Data Quality Information

2.1 Attribute Accuracy

2.1.1 Attribute Accuracy Report:

Attribute accuracy was tested by manually comparing hard copy plots to the source maps. Accuracy of the source maps is related to the contouring algorithm used to derive the contours, accuracy and density of soundings used to generate contours, and changes in bathymetry since the data were collected.

2.2 Logical Consistency Report:

All polygon features are checked for topology using Arc/INFO software. Each polygon begins and ends with a node feature. All nodes are checked for errors so that there are no dangling features. There are no duplicate lines or polygons. All nodes well snap together and close polygons based on a specified tolerance. If the node is not within tolerance it is adjusted manually. The tests for logical consistency are performed in Arc/INFO.

2.3 Completeness Report:

Contours were digitized from the Bathymetric Map of the Bering Shelf published by The Geological Society of America. Contours were digitized at 10 m intervals to 200 m. Intermediate 5 m contours were not included in the GIS product because many were dangling arcs that could not be used to build polygons. Contours beyond 200 m are available on the source map, but were not included in the digitized product. Only the part of the map in Russian waters (west of the Exclusive Economic Zone) was digitized to provide a compliment for the Coastal Shelf Bathymetry . . . map (see cross-references).

2.4 Positional Accuracy

2.4.1 Horizontal Positional Accuracy

2.4.1.1 Horizontal Positional Accuracy Report:

Horizontal positional accuracy was tested using Arc/INFO's RMS errors generated when the digitized map is converted from table inches to real world coordinates. RMS errors were low.

2.5.1.2.1 Methodology Keyword Thesaurus: None

2.5.1.2.2 Methodology Keyword: digitize

2.5.1.3 Methodology Description:

Contours in Russian waters of the Bering Sea shelf were digitized from the Bathymetric Map of the Bering Shelf published by The Geological Society of America. An additional strip was digitized on the US side of the Exclusive Economic Zone, providing overlap to the Coastal Shelf Bathymetry . . . map to allow for edge-matching by product users. Contours were digitized at 10 m intervals except where contours were missing from the source map.

2.5.1.4 Methodology Citation:

8.1 Originator: Resource Data, Inc., Anchorage, Alaska

8.2 Publication Date: 1997

8.4 Title:

Western Alaska Bathymetry

8.6 Data Presentation Form: Map

8.8.1 Publication Place:

Anchorage, Alaska

8.8.2 Publisher:

Alaska Science Center, Biological Resources Division, US Geological Survey

3 Spatial Data Organization Information

3.1 Indirect Spatial Reference:

bathymetric contours

3.2 Direct Spatial Reference Method: Vector

3.3 Point and Vector Object Information

3.3.1.1 SDTS Point and Vector Object Type: arcs

3.3.1.2 Point and Vector Object Count: 283

3.3.1.1 SDTS Point and Vector Object Type: polygons

3.3.1.2 Point and Vector Object Count: 94

3.3.1.1 SDTS Point and Vector Object Type: label points

3.3.1.2 Point and Vector Object Count: 94

4 Spatial Reference Information

4.1 Horizontal Coordinate System Definition

4.1.1 Geographic

4.1.1.3 Geographic Coordinate Units: Decimal Degrees

4.1.4.1 Horizontal Datum Name: North American Datum of 1927

4.1.4.2 Ellipsoid Name: Clarke 1866

4.2.2.1 Depth Datum Name: not specified on source map

4.2.2.2 Depth Resolution: 10

4.2.2.3 Depth Distance Units: meters

4.2.2.4 Depth Encoding Method: Attribute Values

5 Entity and Attribute Information

5.1 Detailed Description

5.1.2 Attribute

5.1.2.1 Attribute Label: elevation (polygon attribute)

5.1.2.2 Attribute Definition:

polygon attribute calculated as the mid-point between bounding arcs, eg the elevation between -10 m and -20 m isobaths equals -15 m. Where a bathymetric contour was an "island" and there was no depth information inside the island, the elevation was coded as the bounding contour's depth. Elevations range from -5 to -195 m. Enclosed polygons deeper than 200 m are coded -999. All land polygons are labeled +5 m.

5.1.2.4.2 Range Domain 5

5.1.2.4.2.1 Range Domain Minimum: 5

5.1.2.4.2.2 Range Domain Maximum: -195

5.1.2.5 Attribute Units Of Measurement: meters

5.1.2.6 Attribute Measurement Resolution: 10

5.1.2.7 Beginning Date Attribute Values: unknown

5.1.2 Attribute

5.1.2.1 Attribute Label: elevation (arc attribute)

5.1.2.2 Attribute Definition:

depth of bathymetric contour lines, in negative meters. Used to calculate polygon mid-depth elevation attribute. Arcs that fall along area boundaries or that were used to close dangling contours are coded with an elevation of 998.

5.1.2.4.2 Range Domain 0

5.1.2.4.2.1 Range Domain Minimum: 0

5.1.2.4.2.2 Range Domain Maximum: -200

5.1.2.5 Attribute Units Of Measurement: meters

5.1.2.6 Attribute Measurement Resolution: 10

5.1.2.7 Beginning Date Attribute Values: unknown

5.1.2 Attribute

5.1.2.1 Attribute Label: overlap (polygon and arc attribute)

5.1.2.2 Attribute Definition:

features in the area of overlap between this dataset and the Coastal Shelf Bathymetry . . . map are coded "T", all other features are coded "F". This attribute was included to aid in edge-matching the 2 datasets by product users.

5.1.2.4.1 Enumerated Domain

5.1.2.4.1.1 Enumerated Domain Value: true/false

6 Distribution Information

6.1 Distributor

10.2 Contact Organization Primary

10.1.2 Contact Organization: Alaska Science Center, Marine and Fresh Water Ecology Branch

10.4 Contact Address

10.4.1 Address Type: Mailing and Physical Address

10.4.2 Address: Biological Resources Division, U.S. Geological Survey

10.4.2 Address: 1011 E. Tudor Road

10.4.3 City: Anchorage

10.4.4 State or Province: Alaska

10.4.5 Postal Code: 99503

10.4.6 Country: USA

10.5 Contact Voice Telephone: (907) 786-3512

10.7 Contact Facsimile Telephone: (907) 786-3636

10.9 Hours of Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday

10.10 Contact Instructions: None

6.3 Distribution Liability:

Although these data have been processed successfully on a computer system at the Alaska Science Center, Biological Resources Division, US Geological Survey, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from an Alaska Science Center server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The Alaska Science Center shall not be held liable for improper or incorrect use of the data described and/or contained herein.

6.4 Standard Order Process

6.4.1 Non-Digital Form: map

6.4.4 Ordering Instructions: the map is no longer in print from the Geological Society of America (3300 Penrose Place, Boulder, CO 80301) but may be available at natural resource agency libraries that include literature on Alaska and/or Russia.

6.4 Standard Order Process

6.4.2 Digital Form

6.4.2.1.1 Format Name: ARC/INFO

6.4.2.1.2 Format Version Number: Version 7.1

6.4.2.1.6 File Decompression Technique: Arc Export (full compression)

6.4.2.1.7 Transfer Size: 222449

6.4.2.2 Digital Transfer Option

6.4.2.2.1.2 Access Instructions: FTP:ftp.asc.nbs.gov, access ftp site as anonymous, change directory to OUTGOING/BATHY, transfer under ASCII mode (type ascii), get ANADBATH_3GEO.E00

6.4.2.2.1.3 Online Computer And Operating System: Unix Sun Workstation

6.4.3 Fees: None

7 Metadata Reference Information

7.1 Metadata Date: 19970425

7.4 Metadata Contact:

10.2 Contact Organization Primary

10.1.2 Contact Organization: Alaska Science Center, Marine and Fresh Water Ecology Branch

10.4 Contact Address

10.4.1 Address Type: Mailing and Physical Address

10.4.2 Address: Biological Resources Division, U.S. Geological Survey

10.4.2 Address: 1011 E. Tudor Road

10.4.3 City: Anchorage

10.4.4 State or Province: Alaska

10.4.5 Postal Code: 99503

10.4.6 Country: USA

10.5 Contact Voice Telephone: (907) 786-3512

10.7 Contact Facsimile Telephone: (907) 786-3636

10.9 Hours of Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday

10.10 Contact Instructions: None

7.5 Metadata Standard Name: NBS Content Standards for National Biological Information Infrastructure Metadata

7.6 Metadata Standard Version: NBII Draft of December 1995, Based FGDC of June 8, 1994

7.8 Metadata Access Constraints:

None

7.9 Metadata Use Constraints:

None

7.10.2 Metadata Security Classification: Unclassified

Please send comments or questions about the content of this page to Chad Jay or Tony Fischbach

Please send comments or questions about this web page to: mwhalen@usgs.gov