COVERAGE BATHPT57

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Interrain Pacific

Publication_Date: 19950000

Title: COVERAGE BATHPT57

Geospatial_Data_Presentation_Form: map

Publication_Information:

Publication_Place: Portland,OR

Publisher: Interrain Pacific

Online_Linkage: <http://www.orst.edu/dept/tbaynep/active.html>

Description:

Abstract:

Bathymetry data from 1957 from the National Ocean Service (NOS files). These files list the latitude/longitude, the survey registry number, the day, year, depth and a cartographic code (from the NOS hydrographic survey guidelines No. 35, October 31, 1984) )Several studies of sedimentation and sediment composition have been conducted in Tillamook Bay (e.g., Avolio 1973, Glenn 1978, Komar 1997). The latter report provides an overview of what is known about sedimentation of the bay, which is an important environmental concern because of its influence on habitat quality and navigation. Bathymetric surveys were conducted in 1867, 1957, and 1994/1995. 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. It is considered likely that the bay has received excessive contributions of sediment since the last century. Major sources include:

1 the breach of Bayocean Spit between 1952 and 1956
2  deforestation in the watershed
3 the Tillamook Burns of 1933, 1939, 1945, and 1951
4 land use practices in the watershed, including road

construction, agriculture, and urbanization

In addition, the bay has been altered in a variety of other ways that have undoubtedly affected its bathymetry. These include the drainage of wetlands and construction of dikes and levees. The inlet from the ocean was modified by constructing jetties, and dredging of navigation channels has occurred throughout this century (Percy et al. 1974). The most catastrophic change occurred in 1952 when the spit was breached just north of the current location of Cape Meares Lake. This may have been due to erosion of Bayocean spit in response to construction of the north jetty. The breach remained open until a dike was constructed in 1956 to close it off.

Purpose:

navigation, comparison with other historical and more recent bathymetry data(see COVERAGES BATHPT95, BATHPT67,BATHPTS, BATHPOLY95, BATHPOLY67, BATHPOLY57, BATHGRID95, BATHGRID67, BATHGRID57)

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19570700

Currentness_Reference: Publication Date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None Planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.01219982

East_Bounding_Coordinate: -123.87430224

North_Bounding_Coordinate: 45.57010024

South_Bounding_Coordinate: 45.43849871

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: Sedimentation

Theme_Keyword: Soil erosion

Theme_Keyword: bathymetry

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: North America

Place_Keyword: United States of America

Place_Keyword: OR

Place_Keyword: Oregon

Place_Keyword: Tillamook Bay

Temporal:

Temporal_Keyword_Thesaurus: None

Temporal_Keyword: 1957

Temporal_Keyword: historical

Access_Constraints: none

Use_Constraints: see Distribution_Liability

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: John Gabriel

Contact_Organization: Interrain Pacific

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 1200 NW Front Ave., Suite 470A

City: Portland

State_or_Province: OR

Postal_Code: 97209

Country: USA

Contact_Voice_Telephone: (503) 226-8108

Contact_Electronic_Mail_Address: interrain@igc.apc.org

Native_Data_Set_Environment:

Windows_NT, 4.0, Intel ARC/INFO version 7.2.1

Data_Quality_Information:

Logical_Consistency_Report: Point features present.

Completeness_Report: complete

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: The data had been collected along transects across the bay with additional sampling in the major channels (Figure
1b). The data transects were generally spaced about 800
to 1000 m apart with sampling every 150 m.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Measurement errors would add to variance by an unknown amount, particularly for the historical surveys. In addition, there may exist a datum shift among the three bathymetric coverages. In other words, for each data set, the measured depths had to be standardized to some benchmark elevation. For example, a depth can be recorded at -3 ft., but we need to know the answer to the question, ?Three feet below what?? We do not have information on how the historical data sets were referenced, but we suspect that the reference points were probably not the same.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: National Ocean Service

Publication_Date: 1950's

Title: var.

Publication_Information:

Publication_Place: unknown

Publisher: National Ocean Service

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19570700

Source_Currentness_Reference: Publication Date

Source_Citation_Abbreviation: a

Source_Contribution: all

Process_Step:

Process_Description:

ASCII cartographic code files were obtained from the National Ocean Service (NOS files). These files list the latitude/longitude, the survey registry number, the day, year, depth and a cartographic code (from the NOS hydrographic survey guidelines No. 35, October 31, 1984) for each point, latitude/longitude were extracted and translated into decimal degree generate files, and attributes were extracted into INFO files. The two were then joined together as a point coverage and projected into Lambert projection.

Process_Date: Unknown

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 6553

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: 400000.00000

False_Northing: 0.00000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 13.00739479064

Ordinate_Resolution: 13.00739479064

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: BATHPT57.PAT

Entity_Type_Definition: -point attribute table

Entity_Type_Definition_Source: computer generated

Attribute:

Attribute_Label: SURVEY-REG-NUM

Attribute_Definition: 'survey registry number'

Attribute_Definition_Source: 'K.M. Busse'

Attribute_Domain_Values:

Unrepresentable_Domain: 'survey registry numbers from N.O.S. files'

Attribute:

Attribute_Label: DAY

Attribute_Definition: 'day of year'

Attribute_Definition_Source: 'K.M. Busse'

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 365

Attribute:

Attribute_Label: DPTH-ORIG

Attribute_Definition:

'original number given for depth, depending on attribute code, this number can mean different things'

Attribute_Definition_Source: 'K.M. Busse'

Attribute_Domain_Values:

Unrepresentable_Domain: 'large unique domain '

Attribute:

Attribute_Label: DEPTH

Attribute_Definition:

'actual depth in feet referenced to sea level -calculated from the DPTH-ORIG and CODE attribute'

Attribute_Definition_Source: 'K.M. Busse'

Attribute_Domain_Values:

Unrepresentable_Domain: 'large unique domain '

Attribute:

Attribute_Label: CODE

Attribute_Definition: 'cartographic code from the NOS hydrographic survey guidelines'

Attribute_Definition_Source: 'K.M. Busse'

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

'Cartographic code from the National Ocean Service hydrographic survey guidelines No. 35, October 31,1984'

Codeset_Source: 'National Ocean Service'

Attribute:

Attribute_Label: UNITS

Attribute_Definition:

'units are feet if CODE is a sounding, and n/a if other than a sounding'

Attribute_Definition_Source: 'K.M. Busse'

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: see Overview_Description

Enumerated_Domain_Value_Definition: see Overview_Description

Enumerated_Domain_Value_Definition_Source: see Overview_Description

Overview_Description:

Entity_and_Attribute_Overview:

BATHPT57.PAT

COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC
    1  AREA                   4    12     F      3
    5  PERIMETER              4    12     F      3
    9  BATHPT57#               4     5     B      -
   13  BATHPT57-ID             4     5     B      -
   17  SURVEY-REG-NUM         6     6     I      -
   23  DAY                    4     4     I      -
   27  YEAR                   5     5     I      -
   32  DPTH-ORIG              4     4     I      -
   36  DEPTH                  4     8     F      2
   40  CODE                   4     4     I      -
   44  UNITS                 10    10     C      -
   54  DEPTHX10               5     5     I      -
     **  REDEFINED ITEMS  **
   34  DEPTH2DIG              2     2     I      -
   35  DEPTH1DIG              1     1     I      -

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: 19981212

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Tillamook Coastal Watershed Resource Center

Contact_Person: Ann Stark

Contact_Position: GIS 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_Facsimile_Telephone: (503)377-4010

Contact_Electronic_Mail_Address: requests@tcwrc.tbcc.cc.or.us

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