COVERAGE BATHPOLY95

Available as - [Outline] - [SGML]

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: E&S Chemistry
Publication_Date: 19971000
Title: COVERAGE BATHPOLY95
Geospatial_Data_Presentation_Form: ARC-INFO COVERAGE
Publication_Information:
Publication_Place: Corvallis,OR
Publisher: E&S Chemistry
Online_Linkage: <http://www.orst.edu/dept/tbaynep/active.html>
Description:
Abstract:
Bathymetric polygon surface derived from bathgrid95.

E&S performed a comparative analysis for TBNEP of the available historical bathymetric data sets for the bay. The objective of this analysis was to quantify, to the extent possible, the changes in bathymetry that occurred between the times of the available surveys.

Purpose:
We developed bathymetric maps for each of the data sets in a consistent fashion. This allowed direct comparison between surveys to permit quantification of the changes that occurred in the depth of the bay during the intervening periods. E&S performed a comparative analysis for TBNEP of the available historical bathymetric data sets for the bay. The objective of this analysis was to quantify, to the extent possible, the changes in bathymetry that occurred between the times of the available surveys. FOR MORE DETAILED INFORMATION SEE TILLBATH.TXT
Supplemental_Information:
Renamed from COVERAGE TIL595P FOR MORE DETAILED INFORMATION SEE TILLBATH.TXT
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1995
Currentness_Reference: Publication Date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None Planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -123.95056731
East_Bounding_Coordinate: -123.87545866
North_Bounding_Coordinate: 45.57014314
South_Bounding_Coordinate: 45.4686553
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: Environmental monitoring
Theme_Keyword: Freshwater ecosystems
Theme_Keyword: Sediment transport
Theme_Keyword: Sedimentation
Theme_Keyword: Surface waters
Theme_Keyword: Transportation
Theme_Keyword: Watershed management
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: North America
Place_Keyword: OR
Place_Keyword: Oregon
Place_Keyword: Tillamook Bay
Place_Keyword: United States of America
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 1995
Temporal_Keyword: current
Access_Constraints: none
Use_Constraints: see Distribution_Liability
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Joe Bernert or Tim Sullivan
Contact_Organization: E&S Chemistry
Contact_Address:
Address_Type: Mailing and Physical Address
Address: P.O. Box 609
City: Corvallis
State_or_Province: OR
Postal_Code: 97339
Country: USA
Contact_Voice_Telephone: (541) 758-6305
Contact_Electronic_Mail_Address: unknown
Native_Data_Set_Environment:
Windows_NT, 4.0, Intel ARC/INFO version 7.2.1
Cross_Reference:
Citation_Information:
Originator: E&S Chemistry
Publication_Date: 19971000
Title: COVERAGE BATHPOLY57
Geospatial_Data_Presentation_Form:
Publication_Place Corvallis,OR Publisher E&S Chemistry
Online_Linkage: <http://www.orst.edu/dept/tbaynep/active.html>
Cross_Reference:
Citation_Information:
Originator: E&S Chemistry
Publication_Date: 19971000
Title: COVERAGE BATHPOLY67
Geospatial_Data_Presentation_Form: ARC-INFO COVERAGE
Publication_Information:
Publication_Place: Corvallis,OR
Publisher: E&S Chemistry
Online_Linkage: <http://www.orst.edu/dept/tbaynep/active.html>

Data_Quality_Information:
Logical_Consistency_Report: POLYGON TOPOLOGY

Completeness_Report: complete

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The variance associated with the 1995 bathymetric surface was good, in the range of 1 to 2 ft across most of the bay. This is partly a result of new data collection techniques that were not available in 1867 and 1957. The availability of linked global positioning systems (GPS) and SONAR systems that collect and store x, y, and z coordinates instantaneously in an on-board computer data base now permit the collection of tens of thousands of data points in a fraction of the time required for the earlier surveys. The variance in this data set could have been reduced further by collecting data points in a more regular pattern (equidistant squares or triangles) rather than along transects. The range (r) of the semivariogram for 1867 was 584 m, as compared with 271 m in 1957 and 481 m in 1995 .Other potential sources of error in the bathymetric maps include 1.positional accuracy of the collected data, 2.depth measurements, 3.data entry and processing, 4.changing scale between and within data sets, and 5.the density and spatial configuration of the data points (Burroughs 1986). (see metadata for bathpt67)
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The variance associated with the 1995 bathymetric surface was good, in the range of 1 to 2 ft across most of the bay. This is partly a result of new data collection techniques that were not available in 1867 and 1957. The availability of linked global positioning systems (GPS) and SONAR systems that collect and store x, y, and z coordinates instantaneously in an on-board computer data base now permit the collection of tens of thousands of data points in a fraction of the time required for the earlier surveys. The variance in this data set could have been reduced further by collecting data points in a more regular pattern (equidistant squares or triangles) rather than along transects. The range (r) of the semivariogram for 1867 was 584 m, as compared with 271 m in 1957 and 481 m in 1995 .Other potential sources of error in the bathymetric maps include 1.positional accuracy of the collected data, 2.depth measurements, 3.data entry and processing, 4.changing scale between and within data sets, and 5.the density and spatial configuration of the data points (Burroughs 1986). (see metadata for bathpt95)
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: E&S Chemistry
Publication_Date: 19971000
Title: GRID BATHGRID95
Geospatial_Data_Presentation_Form: ARC-INFO GRID
Publication_Information:
Publication_Place: Portland, OR
Publisher: E&S Chemistry
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1995
Source_Currentness_Reference: SOURCE DATA

Process_Step:
Process_Description:
The coverage was created by a grid to polygon conversion in ARC INFO from source A
Process_Date: Unknown

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 826
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 1566
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 827

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert_Conformal_Conic
Lambert_Conformal_Conic:
Standard_Parallel: 43
Standard_Parallel: 45.5
Longitude_of_Central_Meridian: -120.5
Latitude_of_Projection_Origin: 41.75
False_Easting: 400000
False_Northing: 0
Planar_Coordinate_Information:
Coordinate_Representation:
Abscissa_Resolution: 3.63000011444
Ordinate_Resolution: 3.63000011444
Planar_Distance_Units: 3.2808400000
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS1980
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: bathpoly95.PAT
Entity_Type_Definition: -poly attribute table
Entity_Type_Definition_Source: computer generated
Overview_Description:
Entity_and_Attribute_Overview:

BATHPOLY95.PAT

COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC
		1  AREA                   4    12     F      3
		5  PERIMETER              4    12     F      3
		9  BATHPOLY95#            4     5     B      -
	 13  BATHPOLY95-ID          4     5     B      -
	 17  GRID-CODE              4     8     B      -


Entity_and_Attribute_Detail_Citation: not available

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Tillamook Coastal Watershed Resource Center
Contact_Position: G.I.S. Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 6385 Tillamook Ave.
City: Bay City
State_or_Province: OR
Postal_Code: 97107
Country: USA
Contact_Voice_Telephone: (503)377-4000
Contact_Electronic_Mail_Address: requests@tcwrc.tbcc.cc.or.us
Contact_Instructions: Contact via email,mail,fax or telephone
Distribution_Liability:
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 also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The Tillamook Coastal Watershed Resource Center shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Metadata_Reference_Information:
Metadata_Date: 19981215
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Tillamook Coastal Watershed Resource Center
Contact_Position: G.I.S. Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 6385 Tillamook Ave.
City: Bay City
State_or_Province: OR
Postal_Code: 97107
Country: USA
Contact_Voice_Telephone: (503)377-4000
Contact_Electronic_Mail_Address: requests@tcwrc.tbcc.cc.or.us
Contact_Instructions: Contact via email,mail,fax or telephone
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

Generated by mp version 2.4.10 on Wed Jul 28 14:42:35 1999