Recherche dans la collection - Annual tree-ring width and density chronologies from Arctic Red River, Northwest Territories [textual record (electronic)]

Notice descriptive – Brève
1
Annual tree-ring width and density chronologies from Arctic Red River, Northwest Territories [textual record (electronic)]

Niveau hiérarchique :

Dossier

Date :

1971.

Référence :

R214-3099-0-E, RG39

Genre de documents :

Documents textuels

Trouvé dans :

Archives / Collections et fonds

No d'identification :

1283939

Contexte de cette notice :

Afficher les détails Masquer les détails

Natural Resources Canada fonds

Canadian Forestry Service sous-fonds

Canadian Forest Service headquarters records

Annual tree-ring width and density chronologies from Arctic Red River, Northwest Territories
Lien vers cette notice

Ajouter à Ma recherche

Lien vers cette notice

Le lien correspond à la page Web qui décrit ce document en particulier. Contrairement au lien temporaire de votre navigateur, celui-ci vous permettra à l’avenir d’accéder à cette page et de la citer comme référence. Pour établir un lien avec cette notice, copier-coller l’adresse URL à l’endroit désiré (dans un wiki, un blogue ou un document).

Ouvrir une session

Ouvrir une session pour commencer à sauvegarder des notices

Ouvrir une session
Notice descriptive – Détails

Date(s) :

1971.

Lieu de création :

Canada

Étendue :

19 files.

Langue du document :

anglais

Portée et contenu :

Afficher les détails Masquer les détails

QThis file contains information that pertains to a tree ring sample from the area of Arctic Red River, N.W.T. Included in the file is the raw data on magnetic tape, the associated summary chronologies, printed outputs of the tree ring parameters and density profile values. The specific objective of this study was to collect, process, and present tree ring chronologies that could be compared with other forms of proxy data for purposes 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.

Provenance :

Afficher les détails Masquer les détails

Créateur : Forintek Canada Corp

Nom(s) additionnel(s) :

Afficher les détails Masquer les détails

Instigateur : Forintek Canada Corporation

Information additionnelle :

Afficher les détails Masquer les détails

Note générale :

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 du titre :

Codebook for G0000833.

Conservation :

Afficher les détails Masquer les détails

Conservation note April 2016
There are 19 datasets associated for G0000833. 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 G0000833_Data01_Binary:
AC1YWST20601 ARCTIC RED RIVER WHITE SPRUCE, TRIGGERING LEVELS
.45 .38 .42 ..
1 1 19 16 18 8 11 11 17 16 2015371274
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 G0000833_Data01_Binary originally contained 387 records. The first three metadata records have been stripped from the file for a total of 384 records. When the two records for each data set were concatenated into one record upon migration, the converted file now only contains 167 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.

Historique de la conservation :

All 19 files were migrated from a binary file structure and migrated to new preservation media in 2016.

There is one file for each tree in the sample.

Groupes de documents reliés :

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.

Caractéristiques du fichier informatique :

Database in flat file format

Source :

Gouvernement

Ancien no de référence archivistique :

Afficher les détails Masquer les détails

RG39
Pour réserver ou commander des documents

Conditions d'accès :

Afficher les détails Masquer les détails

Documents textuels: électroniques

[Consultation90 Ouvert]

Vous pouvez réserver des documents à l'avance pour qu'ils soient disponibles lors de votre visite. Vous aurez besoin d'une carte utilisateur pour ce faire.

Vous ne pouvez pas nous rendre visite ? Vous pouvez acheter une reproduction qui vous sera envoyée. Certaines restrictions peuvent s'appliquer.