SWWA26_500UTM: Southwest Washington 500 meter, 1926 Bathymetry Grid; UTM Projection

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Informat ion
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Gibbs, Ann E.

Publication_Date: 2000

Title:

SWWA26_500UTM: Southwest Washington 500 meter, 1926 Bathymetry Grid; UTM Projection

Edition: Version 1.0

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Menlo Park, CA
Publisher: U.S. Geological Survey (USGS)

Description:

Abstract:

SWWA26_500UTM is a digital bathymetric surface grid of the seafloor off the coast of Southwest Washington and Northwest Oregon. Grid cell spacing is 500m and the projection is UTM, Zone 10. The surface was produced by gridding National Ocean Service (NOS) Hydrographic Surveys collected between 1926 and 1928. This work includes the most recent bathymetric data available on a regional scale over the inner to middle continental shelf off the coast of Washington. The results represent the best available estimate of the seafloor morphology for the time period circa 1926.

Purpose:

This bathymetric surface grid is intended for use as an historical bathymetric base map for scientific research. It is not intended for navigational purposes. The grid was originally intended for use in wave modelling experiments as part of the Southwest Washington Coastal Erosion Study (SWCES), a cooperative study by the US Geological Survey and the Washington State Department of Ecology.

Supplemental_Information:

The SWCES was initiated to examine coastal geology, processes, and natural hazards within the Columbia River littoral cell. The study is jointly directed by the U.S. Geological Survey Coastal and Marine Geology Program and the Washington State Department of Ecology Shorelands and Environmental Assistance Program, with active participation of local communities in Pacific and Grays Harbor counties. Related USGS work in the Southwest Washington Coastal Erosion Study can be found online at: <http://www.ecy.wa.gov/progra ms/sea/swce/>

The grid described here is part of a data release of sixteen similar bathymetric grids. These include: 1926 and 1926-1998 merged Oregon/Washington (ORWA) and Southwest Washington study area (SWWA) grids, each at 500m and 750m grid spacing, in UTM Zone 10 (meters) and Washington State Plane South Zone 5626 (meters) projections. The ORWA data set extends from Heceta Head, Oregon to Cape Johnson, Washington, from the shoreline to about 2000m water depth; the SWWA data set extends from Tillamook Head Oregon to Pt. Grenville WA, from the shore to approximately 700m water depth.

The data used to create this bathymetric grid were collected between 1926 and 1928. Most data were collected between 1926 and 1927. Refer to Gibbs and others, 2000 for details.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1926
Ending_Date: 1928

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.55891725
East_Bounding_Coordinate: -123.91819534
North_Bounding_Coordinate: 47.35233047
South_Bounding_Coordinate: 45.87474294

Keywords:

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: Coastal Geology
Theme_Keyword: Marine Geology
Theme_Keyword: Bathymetry
Theme_Keyword: Hydrographic Data
Theme_Keyword: Southwest Washington Coastal Erosion Study
Theme_Keyword: Columbia River Littoral Cell

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Southwest Washington
Place_Keyword: Northwest Oregon
Place_Keyword: Washington
Place_Keyword: Oregon
Place_Keyword: Grays Harbor
Place_Keyword: Willapa Bay
Place_Keyword: Columbia River
Place_Keyword: Pacific Ocean
Place_Keyword: Pacific Northwest
Place_Keyword: USA

Access_Constraints: None

Use_Constraints:

Please recognize the U.S. Geological Survey (USGS) as the source of this information.

Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.

This information is not intended for navigational purposes.

Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Feel free to use the data but please cite this publication: Gibbs, A.E., Buijsman, M.C., and Sherwood, C.R., 2000, Non-navigational Gridded Bathymetry Data : The Washington-Oregon Coast, 1926-1998; A data release and description of methods. USGS Open-File-Report OF 00-448.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:: United States Geological Survey (USGS), Coastal and Marine Geology (CMG)
Contact_Person: Ann E. Gibbs

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5060

Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address: agibbs@usgs.gov

Data_Set_Credit:

This Program is jointly funded by the Washington State Department of Ecology and the US Geological Survey, Coastal & Marine Geology Program.

Native_Data_Set_Environment:

SunOS UNIX, ARC/INFO version 7.2.1, SURFER V.6

Cross_Reference:

Citation_Information:

Originator: Ann E. Gibbs and Guy Gelfenbaum

Publication_Date: 1999

Title: Bathymetric change off the Washington/Oregon Coast

Series_Information:

Series_Name: Coastal Sediments '99
Issue_Identification:: Proceedings of the 4th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes

Cross_Reference:

Citation_Information:

Originator: Gibbs, A.E., Buijsman, M.C., and Sherwood, C.R.,

Publication_Date: 2000

Title:

Non-navigational Gridded Bathymetry Data : The Washington-Oregon Coast, 1926-1998; A data release and description of methods

Series_Information:

Series_Name: USGS Open-File-Report
Issue_Identification:: OF 00-448

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: The data have been thoroughly analyzed for for gross inaccuracies. A discussion of errors and accuracies associated with the original data collection methodologies can be found in Gibbs and Gelfenbaum (1999).

Logical_Consistency_Report:

Only NOS sounding data with an original cartographic code of 711 are included. The data set was rigorously edited of obviously erroneous points.

Completeness_Report:

Gaps in the hydrographic survey point data exists west of Willapa Bay from approximately -124.034 to -124.363 degrees longitude and 46.573 to 46.738 degrees latitude and northwest of Tillamook Bay from approximately -123.834 to -124.120 longitude and 45.472 to 45.626 latitude. The remaining data are considered complete.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:: Horizontal accuracies for NOS surveys vary by water depth and distance from shore (see Gibbs and Gelfenbaum, 1999).

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:: Vertical accuracies for NOS surveys vary by water depth and distance from shore (see Gibbs and Gelfenbaum, 1999).

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: National Geophysical Data Center
Publication_Date: 1998
Title:: National Ocean Service Hydrographic Survey Data: US Coastal Waters. CD-ROM Set, Version 4.0. Data announcement 98-MGG-03. World Data Center for Marine Geology & Geophysics, Boulder CO

Type_of_Source_Media: CD-ROM

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1926
Ending_Date: 1974

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: NOS_HSD

Source_Contribution: All pre-1998 hydrographic data were obtained from this source.

Process_Step:

Process_Description: See Gibbs, A.E., 2000 for additional information
Process_Date: 1999

Source_Information:

Source_Citation:

Citation_Information:

Originator: US Geological Survey, CMG
Publication_Date: Unpublished material
Title: Point coverage SWWA26PTS_UTM
Edition: Version 1.0

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1926
Ending_Date: 1928

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: SWWA26PTS_UTM

Source_Contribution: Edited NOS hydrographic data points used for gridding.

Process_Step:

Process_Description:: NOS_HDB data projected from Lat/Long NAD27 to WASP South Zone 5626, edited of erroneous points, and converted to UTM10. See Gibbs and others, 2000 for additional information
Process_Date: 1999

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Grid Cell
Row_Count: 327
Column_Count: 93

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 10

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -123.
Latitude_of_Projection_Origin: 0.0
False_Easting: 0.000
False_Northing: -500000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 500
Ordinate_Resolution: 500

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: Mean lower low water

Depth_Resolution: 1.0

Depth_Distance_Units: meters

Depth_Encoding_Method:

Explicit depth coordinate included with horizontal coordinates

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:: United States Geological Survey (USGS), Coastal and Marine Geology (CMG)
Contact_Person: Ann E. Gibbs

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5060

Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address: agibbs@usgs.gov

Distribution_Liability:

Please recognize the US Geological Survey and Southwest Washington Coastal Erosion Study as the source of this information

The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.

Metadata_Reference_Information:

Metadata_Date: 20001018

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:: United States Geological Survey (USGS), Coastal and Marine Geology (CMG)
Contact_Person: Ann E. Gibbs

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing address
Address: USGS, MailStop 999, 345 Middlefield Road
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA

Contact_Voice_Telephone: (650) 329-5060

Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address: agibbs@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

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