SWWA26_750UTM: Southwest Washington 750 meter, 1926 Bathymetry Grid; UTM Projection

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Gibbs, Ann E.
Publication_Date: 20001018
Title:
SWWA26_750UTM: Southwest Washington 750 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)
Larger_Work_Citation:
Citation_Information:
Originator: Gibbs, A.E.
Originator: Buijsman, M.C.
Originator: 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: U.S. Geological Survey Open-File Report
Issue_Identification: 00-448
Online_Linkage: http://pubs.usgs.gov/of/2000/of00-448/
Description:
Abstract:
SWWA26_750UTM is a digital bathymetric surface grid of the seafloor off the coast of Southwest Washington and Northwest Oregon. Grid cell spacing is 750m 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/programs/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: -124.56053838
East_Bounding_Coordinate: -123.91978744
North_Bounding_Coordinate: 47.35119221
South_Bounding_Coordinate: 45.87359687
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geology
Theme_Keyword: bathymetry
Theme_Keyword: sea-floor characteristics
Theme_Keyword: geospatial datasets
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
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation
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
Place:
Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4
Place_Keyword: f41007 = Clatsop
Place_Keyword: f53031 = Jefferson
Place_Keyword: f53027 = Grays Harbor
Place_Keyword: f53049 = Pacific
Place_Keyword: OC41 = Northeast Pacific
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
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.
Series_Information:
Series_Name: NOAA Data Announcement
Issue_Identification: 98-MGG-03
Publication_Information:
Publisher: World Data Center for Marine Geology & Geophysics
Publication_Place: 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:
Data were processed using both ARC/INFO (v. 7.1) and SURFER32 (v 6.0). Original NOS point data were projected from geographic units (latitude/longitude, datum NAD27) to the Washington State Plane South coordinate system (datum NAD83). Non-sounding data (cartographic code not equal to 711; rocks awash, pilings, etc.) and obviously erroneous or questionable data (based on contour *donuts*, trackline crossing inconsistencies, etc.) were edited out of the data set. USACE data for Grays Harbor and Willapa Bay were converted from Washington State Plane South (feet) and for the Columbia River from Oregon State Plane (feet). SURFER was used to generate preliminary grids of all the data. Data editing and final grid construction was completed using ARC/INFO.
Individual grids were processed using different data sets and gridding methodologies. Grid boundaries for the SWWA and ORWA grids are listed in Tables 3 and 4, respectively.
The SWWA26 grid was created by gridding three subsets of edited NOS point data (midshore; nearshore; shoreface; Fig. 2) using parameters that best fit the individual data set. Subset boundaries were determined based on differences in the original 1926 survey scale, sounding distribution, and data precision (see Gibbs and Gelfenbaum, 1999 for a more detailed description). Each subset was gridded separately in SURFER, using the processing steps outlined in Table 5, then imported into ARC/INFO, clipped to its specific boundary, and merged with the other sub-grids to create the final SWWA26 surface.
The SWWA98 grid is the SWWA26 grid with a subset of merged and gridded 1926/1998 point data nested within it. The merged 1926/1998 point data set includes both the 1998 USACE hydrographic data from the approaches to and ebb-tidal deltas of Grays Harbor, Willapa Bay, and the Columbia River, and portions of the 1926 NOS hydrographic data set. Because of large changes that have occurred in the location and morphology of these ebb-tidal deltas since 1926, the merged data have, in places, abrupt and irregular boundaries. In order to obtain a smooth transition across the survey boundaries, data was edited, modified, and, where necessary, point data added, based on inferred shoreface and ebb-tidal delta morphology. This modified and merged 1926/1998 data set was then gridded, clipped to the modified 1998 survey boundaries, and mosaicked with SWWA26 to produce the final SWWA98 surface. Specific techniques used to create the merged 1926/1998 point data set are discussed in the following section Generating The Modern 1998 Hydrographic Data Set. Specific grid processing parameters used to create SWWA98 are shown in Table 6.
The ORWA grids include gridded raw, unedited NOS hydrographic data with the more rigorously edited and processed SWWA grids nested within them. The NOS point data were gridded using a linear kriging algorithm, matrix smoothed, and mosaicked with either the SWWA26 or SWWA98 grid to create the final ORWA26 and ORWA98 surfaces, respectively. Specific processing parameters are shown in Table 7.
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_HSD data projected from Lat/Long NAD27 to WASP South Zone 5626, edited of erroneous points, and converted to UTM10.
Process_Date: 1999
Process_Step:
Process_Description: Creation of original metadata record
Process_Date: 20001018
Process_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
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 218
Column_Count: 62
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: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 750
Ordinate_Resolution: 750
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
Resource_Description: USGS Open-File Report 00-448
Distribution_Liability:
Please recognize the US Geological Survey and Southwest Washington Coastal Erosion Study 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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
Format_Version_Number: 7.1
Format_Information_Content: Gridded bathymetry, georegistered
File_Decompression_Technique: gzip -d
Transfer_Size: 0.04
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Arc/Info ASCII grid
Format_Version_Number: 7.1
Format_Information_Content: Gridded bathymetry, georegistered
File_Decompression_Technique: gzip -d
Transfer_Size: 0.04
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Surfer ASCII grid
Format_Version_Number: Surfer32 6.0
Format_Information_Content: Gridded bathymetry, georegistered
File_Decompression_Technique: gzip -d
Transfer_Size: 0.04
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Columnar text
Format_Specification:
Points are specified one per line, x and y are integer, z is floating point with depth negative.
Format_Information_Content: Gridded bathymetry, georegistered
File_Decompression_Technique: gzip -d
Transfer_Size: 0.08
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20160205
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Midwest Area
Contact_Position:
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 954
12201 Sunrise Valley Dr
City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA
Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

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