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Short Citation:
Alaska Fisheries Science Center, 2023: AFSC/REFM: Alaskan Pacific cod 18 Oxygen age validation study,

Item Identification

Title: AFSC/REFM: Alaskan Pacific cod 18 Oxygen age validation study
Short Name: AFSC/REFM: Alaskan Pacific cod 18 Oxygen age validation study
Status: In Work

The data (Appendix 1) describe multiple micro samples from 40 specimens. The data set first provides specimen identification information:

Specimen ID, estimated age, and AFSC RACE cruise number. Second, the data describes the milling and physical properties of each milled sampled, up to 42

samples per specimens: volume and mass. Finally, the data contain information and results from mass spectrometry analysis measuring d13C and d18O.


The purpose of this data set is to use stable to confirm the accuracy of Pacific cod ages estimated from otolith growthzones.


Loaded by FGDC Metadata Uploader, batch 5488, 03-04-2015 11:06

The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export:

- Taxonomy (FGDC:taxonomy)

- Lineage (FGDC:lineage)


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
PARR Exclusion Non-Federal Funding
None age validation
None annual seasonal temperature cycles
None break-and-burn age
None fish age determination
None high-resolution microsampling
None mass spectrometry
None micromilling
None otolith
None Stable 18 O

Spatial Keywords

Thesaurus Keyword
None Alaska
None Bering Sea

Physical Location

Organization: North Pacific Research Board
City: Anchorage
State/Province: AK
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: Table (digital)
Entity Attribute Overview:

The tab "data for Ap 1" is a cleaned up identical version of the tab "orig data."

Entity Attribute Detail Citation:

PI notes

Data Set Credit: The funding source for this study is the North Pacific Research Board. The samples used in this study were collected by the Research Assessment and Conservation Engineering Division (RACE) on survey cruises.

Support Roles

Data Steward

CC ID: 234219
Date Effective From: 2015-10-19
Date Effective To:
Contact (Person): Kastelle, Craig
Email Address:


CC ID: 234218
Date Effective From: 2015
Date Effective To:
Contact (Organization): North Pacific Research Board (NPRB)
Address: 1007 West 3rd Avenue, Suite 100
Anchorage, AK 99501
Phone: 907 644 6700

Metadata Contact

CC ID: 188090
Date Effective From: 2015-03-04
Date Effective To:
Contact (Person): MC, Metadata Coordinators
Email Address:


CC ID: 188092
Date Effective From: 2015-03-04
Date Effective To:
Contact (Person): Kastelle, Craig
Email Address:


CC ID: 188093
Date Effective From: 2015-03-04
Date Effective To:
Contact (Person): Helser, Thomas
Email Address:


CC ID: 188094
Date Effective From: 2015-03-04
Date Effective To:
Contact (Organization): Alaska Fisheries Science Center (AFSC)
Address: 7600 Sand Point Way N.E., Building 4
Seattle, WA 98115
Business Hours: 0700-1700 Pacific Time

Point of Contact

CC ID: 188091
Date Effective From: 2015-03-04
Date Effective To:
Contact (Person): Kastelle, Craig
Email Address:


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 188089
W° Bound: -177
E° Bound: -160
N° Bound: 62
S° Bound: 54

Eastern Bering Sea

Extent Group 1 / Time Frame 1

CC ID: 188088
Time Frame Type: Range
Start: 2006
End: 2010

Access Information

Security Class: Unclassified
Data Access Procedure:

NPRB will be publishing the data.

Data Access Constraints:

The data set is still being analyzed and will not be available for distribution until it has been finalized and all QA/QC practices have been performed.

Contact the Point Of Contact for estimated time of release.

Data Use Constraints:

contact PI

Distribution Information

Distribution 1

CC ID: 839262
Download URL:

Distribution 2

CC ID: 839261
Download URL:

Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/15/2021. Contact:

Technical Environment



Data Quality


Accuracy is evaluated in comparisons of fish size vs. age.

Completeness Report:

AFSC RACE surveys may not contain a representation of the smallest juvenile Pacific cod, because they are not able to sample the very near-shore areas.

Also, by careful design, our study did not

use specimens that were aged 6 years or older in the original age reading (final age)

Conceptual Consistency:

Data from RACE is proofed by normal protocols routinely used on survey data. Data generated by the Age and Growth program

(age estimates and associated codes) is proofed for typing errors, tested for precision with a 20% replicate.

Quality Control Procedures Employed:

See NPRB metadata

Data Management

Have Resources for Management of these Data Been Identified?: Yes
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: No
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: no
Approximate Delay Between Data Collection and Dissemination: 2 years
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed:


Actual or Planned Long-Term Data Archive Location: Other
If World Data Center or Other, Specify: NPRB
Approximate Delay Between Data Collection and Archiving: 1 year
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

IT Security and Contingency Plan for the system establishes procedures and applies to the functions,

operations, and resources necessary to recover and restore data as hosted in the Western Regional

Support Center in Seattle, Washington, following a disruption.


Lineage Statement:

See metadata at

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity Apendix 1 all results.xlsx/"data for Ap 1"

Catalog Details

Catalog Item ID: 23082
GUID: gov.noaa.nmfs.inport:23082
Metadata Record Created By: Angie Greig
Metadata Record Created: 2015-02-03 17:45+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-05-30 18:09+0000
Metadata Record Published: 2016-04-28
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2016-04-28
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2017-04-28