Collection search - Annual tree-ring width and density chronologies from Canyon Mountain, Yukon Territory [textual record (electronic)]

Record information – Brief
1
Annual tree-ring width and density chronologies from Canyon Mountain, Yukon Territory [textual record (electronic)]

Hierarchical level:

File

Date:

1975 and 1976.

Reference:

R214-3090-4-E, RG39

Type of material:

Textual material

Found in:

Archives / Collections and Fonds

Item ID number:

1283930

Context of this record:

Show detail Hide detail

Natural Resources Canada fonds

Canadian Forestry Service sous-fonds

Canadian Forest Service headquarters records

Annual tree-ring width and density chronologies from Canyon Mountain, Yukon Territory
Link to this record

Add to My Research

Link to this record

This link identifies the web page describing this particular record. Unlike the temporary link in your browser, this link will allow you to access, and reference, this page in the future. To link to this descriptive record, copy and paste the URL where ever needed (wiki, blog, document).

Sign in

Sign in to start saving records using My Research

Sign in
Record information – Details

Date(s):

1975 and 1976.

Place of creation:

Canada

Extent:

24 files

Language of material:

English

Scope and content:

Show detail Hide detail

This file contains tree ring chronology data for various trees in Canada.

The data were collected so present tree ring chronologies could be compared with other forms of proxy data with the purpose of reconstructing past climatic records. An effort was made to collect from the oldest and most climatically sensitive trees on the site. Corollary objectives were to evaluate the dendrochronological quality of trees from this area and to produce tree ring chronologies which could be used for dating purposes.

There are 24 files representing tree ring chronology data for 24 individual trees. As a result, there is one file for each tree sampled at the site.

All 24 files were migrated from a binary data structure and placed on new preservation media in 2016.

Provenance:

Show detail Hide detail

Creator: Forintek Canada Corp

Additional name(s):

Show detail Hide detail

Originator: Forintek Canada Corporation

Additional information:

Show detail Hide detail

General note:

CONSERVATION NOTE: Originally, the data base commenced with several identification and scanning information records written in ASCII; now these records are in EBCDIC. In addition, the unloaded database was changed from variable length to fixed length; each record was extended to a physical length of 120 columns.
STATEMENT OF RESPONSIBILITY NOTE: Forintek was previously known as the Western Forest Products Laboratory (WPFL).
COLLECTOR/COLLECTEUR: Forintek Canada Corporation
RELATED PUBLICATIONS: An extensive list of publications is available in the documentation package.
Originator (Principal Investigator): Forintek Canada Corporation

Source of title:

Codebook for G0000824.

Conservation:

Show detail Hide detail

Conservation note April 2016

There are 24 datasets associated for G0000824. When these files were migrated from EBCDIC binary format to the ASCII encoding format in 2016, the files were totally restructured.
In some files in the series, there were two, three, four or five 120 byte ASCII records at the beginning of the file that contained metadata about each tree for a specific site. The following is an example for G0000824_Data01_Binary:
HJ2TWST23101
THIS IS WH 105 N..
1 1 19 16 18 8 16 -21 16 18 538976288
These records have been stripped off of each dataset and been saved independently from the tree ring data in the Converted Headers directory under PM1. All of the original data resides in the PM0 directory.
In addition, in the original data files, there were two 120 byte data records for each year that is associated with a tree ring. When the files were converted, these two records were combined into one long record so the data could be used with spreadsheet applications such as Excel.
As an example, file G0000824_Data01_Binary originally contained 175 records. The first three metadata records have been stripped from the file for a total 172 records. When the two records for each data set were concatenated into one record upon migration, the converted file now only contains 86 records. Each of these records is associated with a specific year. The output data is 557 bytes long to allow space for the converted integer binary values.
In the situations where there were other than three metadata records at the beginning of the original file, different SAS runs were used.
The SAS runs used to convert the data are included as part of the metadata: CONVERT_TEMPLATE2.SAS is the code used for the files with 2 lines of 'header' and CONVERT_TEMPLATE3.SAS was used for 3, CONVERT4.SAS was used for 4, etc.

Custodial history:

All 24 files were migrated from a binary data structure and placed on new preservation media in 2016.

There is one file for each tree sampled at the site.

Related material:

For all available material directly related to tree ring data please consult the following files: G0000819 to G0000820, G0000822 to G0000837, G0000854 to G0000861 and G0000896 to G0000905.

Type of computer file or data note:

Database in flat file format

Source:

Government

Former archival reference no.:

Show detail Hide detail

RG39
Ordering and viewing options

Conditions of access:

Show detail Hide detail

Textual records: electronic

[Consultation90 Open]

You can order materials in advance to be ready for you when you visit. You will need a user card to do this.

Cannot visit us on site? You can purchase a copy to be sent to you. Some restrictions may apply.