COVERAGE BATHPT57

Available as - [Outline] - [SGML]

Metadata:


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

Generated by mp version 2.4.10 on Wed Jul 28 14:42:55 1999