AFSC/ABL: Frederick Sound Echo-integrated Trawl Survey, 2001 to 2004

Alaska Fisheries Science Center
Data Set (DS) | ID: 27710 | Published / External
Created: 2015-10-05   |   Last Modified: 2023-05-30

Parent: Auke Bay Laboratories
Project (PRJ) | ID: 12324

ID: 27710
Data Set (DS)

* Discovery
• First Pass
» Metadata Rubric

Item Identification

* » Title AFSC/ABL: Frederick Sound Echo-integrated Trawl Survey, 2001 to 2004
Short Name AFSC/ABL: Frederick Sound Echo-integrated Trawl Survey, 2001 to 2004
* Status Completed
Creation Date  
Revision Date  
• Publication Date Unknown
* » Abstract

The acoustic trawl database for Frederick Sounds echo-trawl survey was conducted from 2001 to 2004. The surveys were conducted throughout most of the southern part of Stephens Passage and Frederick Sound in southeast Alaska and all their adjoining bays. Acoustic and trawl surveys were conducted every 3 months to verify acoustic signals and to collect biological data. This study was conducted to study the relationship between Steller sea lions (Eumetopias jubatus) and their prey. Acoustic equipment were calibrated before every trawl survey. Trawls were used to identify the fish species associated with a specific acoustic signal and to get length weight data per species. Acoustic data were analyzed by the same qualified acoustician throughout the surveys duration with calibrations entered into the analytical software after each calibration.

Trawl data were used to enumerate and identify all nekton found within the study area and to generate length frequencies, species composition and abundance by season. The acoustic data was use to generate biomass estimates for Pacific herring, Pacific hake and walleye pollock. Longlines were deployed to better identify and enumerate the benthic species not usually caught in pelagic trawls.
* Purpose

This dataset contains the data from the echo-integrated trawl survey from 2001 to 2004.
Notes

Loaded by FGDC Metadata Uploader, batch 7180, 10-05-2015 18:48
Other Citation Details
• Supplemental Information
DOI (Digital Object Identifier)  
DOI Registration Authority  
DOI Issue Date  

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category biota
ITIS Pacific hake
ITIS Pacific herring
ITIS walleye pollock
None acoustics
None demersal
None echo integration trawl survey
None longline
None pelagic
   
   
   

Temporal Keywords

Thesaurus Keyword
   
   
   

* Spatial Keywords

Thesaurus Keyword
Geographic Names Information System Alaska
   
   
   

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Physical Location

• » Organization Alaska Fisheries Science Center
• » City Seattle
• » State/Province WA
• Country USA
• » Location Description

Data Set Information

* Data Set Scope Code Data Set
• Data Set Type  
• Maintenance Frequency None Planned
Maintenance Note
» Data Presentation Form maps and data
• Entity Attribute Overview
Entity Attribute Detail Citation
Entity Attribute Detail URL  
Distribution Liability

The user is responsible for the results of any application of this data for other than its intended purpose.
Data Set Credit  

Support Roles

» At least one Distributor Org, one Metadata Contact, one Point of Contact, and one Data Steward should be listed.
* » Support Role Data Steward
* » Date Effective From 2015-10-01
Date Effective To
Person Csepp, Dave
Email Address dave.csepp@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Distributor
* » Date Effective From 2015-10-01
Date Effective To
Person Csepp, Dave
Email Address dave.csepp@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Metadata Contact
* » Date Effective From 2015-10-05
Date Effective To
Person MC, Metadata Coordinators
Email Address AFSC.metadata@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Originator
* » Date Effective From 2015-10-05
Date Effective To
Person Vollenweider, Johanna
Email Address joanna.volleweider@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Originator
* » Date Effective From 2015-10-05
Date Effective To
Person Csepp, Dave
Email Address dave.csepp@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Point of Contact
* » Date Effective From 2015-10-01
Date Effective To
Person Csepp, Dave
Email Address dave.csepp@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions

Extents

Currentness Reference Ground Condition

Extent Group 1

Extent Description

Extent Group 1 / Geographic Area 1

* » W° Bound -134.5
* » E° Bound -133.5
* » N° Bound 57.167
* » S° Bound 56
* » Description

Alaska, Southeast Alaska, Stephens Passage, Frederick Sound

Extent Group 1 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 1 / Time Frame 1

* » Time Frame Type Range
* » Start 2001-06
End 2004-05
Alternate Start As Of Info  
Alternate End As Of Info  
Description

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Access Information

Data License  
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Data License Statement
* » Security Class Unclassified
* Security Classification System
Security Handling Description
• Data Access Policy
» Data Access Procedure

N/A
• » Data Access Constraints

There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.
• Data Use Constraints

User must read and fully comprehend the metadata prior to use. Data should not be used beyond the limits of the source scale. Acknowledgement of NOAA, as the source from which these data were obtained, in any publications and/or other representations of these data is suggested.
Metadata Access Constraints
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Distribution Information

Start Date  
» Download URL https://www.ncei.noaa.gov/
Distributor
File Name  
Description

NCEI to be determined
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Archive Information

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Description

Microsoft Excel Spreadsheet

Data Quality

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Completeness Report

None
Conceptual Consistency

Acoustic equipment were tested through monthly calibrations. Data were checked throughout its analysis quantitatively and qualitatively throughout their analytical processes.
» Quality Control Procedures Employed

Contact the dataset POC for full QA/QC methodology

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? Yes
» Is Access to the Data Limited Based on an Approved Waiver? Yes
» If Distributor (Data Hosting Service) is Needed, Please Indicate yes
» Approximate Delay Between Data Collection and Dissemination unknown
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed

no delay
» Actual or Planned Long-Term Data Archive Location To Be Determined
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain

NCEI site yet to be determined
» Approximate Delay Between Data Collection and Archiving unknown
» 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

» Lineage Statement

Sources

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Process Steps

Process Step Number 1
» Description

Echo integration-trawl surveys were conducted over 2700 km2 in Stephens Passage, Frederick Sound, and associated bays in southeastern Alaska every 3 months between June 2001 and May 2004.
Process Date/Time  
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 2
» Description

Longline surveys were conducted in the same area from September 2003 to May 2004.
Process Date/Time  
Process Contact  
Phone (Voice)  
Email Address  
Source  
Process Step Number 3
» Description

Standardized acoustic box surveys were run in Frederick sound and Stephens passage and zigzag transects in the bays. Trawls were run on all interesting sign, schools and layers to identify acoustic sign. A Simrad split beam 38 kHz system was used.
Process Date/Time  
Process Contact  
Phone (Voice)  
Email Address  
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Process Step Number 4
» Description

Samples were taken from both fishing methods for age, length, weight and nutritional analysis.
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Acquisition Information

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FAQs

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Catalog Details

Catalog Item ID 27710
Metadata Record Created By Emily A Fergusson
Metadata Record Created 2015-10-05 18:47+0000
Metadata Record Last Modified By SysAdmin InPortAdmin
» Metadata Record Last Modified 2023-05-30 18:10+0000
Metadata Record Published 2016-05-05
Owner Org AFSC
Metadata Publication Status Published Externally
Do Not Publish? N
Metadata Workflow State Published / External
Metadata Last Review Date 2016-05-05
Metadata Review Frequency 1 Year
Metadata Next Review Date 2017-05-05
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