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Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Access Info
Distribution Info
Data Quality
Data Management
Lineage
Catalog Details

Summary

Short Citation
Pacific Islands Fisheries Science Center, 2024: EOP active acoustics, https://www.fisheries.noaa.gov/inport/item/2711.
Full Citation Examples

Abstract

These data contain shipboard active acoustics data collected in the Pacific, both pelagic and near shore environments. Data is collected using Simrad EK60 splitbeam multifrequency systems with the transducers pointing vertically down in the water column. The echosounders operate up to four frequencies at 38 kHz, 70 kHz, 120 kHz, and 200 kHz.

Child Items

No Child Items for this record.

Contact Information

Point of Contact
Reka Domokos
reka.domokos@noaa.gov
(808)725-5368

Metadata Contact
Reka Domokos
reka.domokos@noaa.gov
(808)725-5368

Extents

Geographic Area 1

130° W, -140° E, 36° N, -20° S

Pacific Ocean, South Central Pacific, North Central Pacific, North Western Pacific, Hawaii, American Samoa, Hawaiian Islands seamounts

Time Frame 1
2004-03 - Present

Item Identification

Title: EOP active acoustics
Status: In Work
Abstract:

These data contain shipboard active acoustics data collected in the Pacific, both pelagic and near shore environments. Data is collected using Simrad EK60 splitbeam multifrequency systems with the transducers pointing vertically down in the water column. The echosounders operate up to four frequencies at 38 kHz, 70 kHz, 120 kHz, and 200 kHz.

Purpose:

Active acoustic data obtained during shipboard surveys are used to study the distribution, movement patterns, composition, and biomass of economically important nekton (such as tunas, snappers, etc), as well as their prey species, which comprise the sonic scattering layer, SSL. Once developed, hydro-acoustic techniques can become a primary method for stock assessment. Besides being free of biases associated with fishery dependent stock assessment methods, hydro-acoustic tools have the advantages of yielding large amounts of data on a controlled grid with a relatively low demand for resources. Further, active acoustic surveys provide simultaneous information on both nekton and micronekton, allowing to better our understanding on the effects of micronekton distribution, movement patterns, and biomass on its predators. With the combination of simultaneously collected data on the environment (such as currents, temperature, salinity,sea surface height, chloropigments), the effects of the physical environment on both nekton and micronekton can be investigated.

Supplemental Information:

Ownership: PIFSC

Study Area: Western and Central North Pacific

Spatial Resolution: approximately 20-80 cm vertical, 1-100m horizontal, along predetermined survey tracks

Temporal Resolution: .2 - 1 second

Frequency of Collection: 24 hours / day during survey

Time of Collection: Discrete data sets, typically 2-3 weeks per year; cruise, usually once per year

Types of Data Collected: Hydro-acoustic data in raw voltage

Collection Method: SIMRAD split-beam, vertically pointed transducers

Recording Media: Hard drives (internal

Collection Standards of the Data or Creation Standards of the Data Product: Available

Data Collection Documentation: Field Manual

Storage Media: External and internal drives, Simrad EK60 raw data format

Security and Integrity Plans: Available

Backups: Available

Update Schedule: Per cruise, usually once per year

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
None bioacoustics
None biomass estimation
None bottomfish
None Deep-7
None ensonified fish
None EOP
None ESD
None micronekton
None nekton
None PIFSC
None snappers
None sonic scattering layer
None SSL
None tuna

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None .2 seconds
None Discrete sampling periods
None half seconds
None once per seconds

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Hawaii
None mesoscale oceanographic features
None North Central Pacific
None Pacific Ocean
None seamounts
None South Central Pacific

Physical Location

Organization: Pacific Islands Fisheries Science Center
City: Honolulu
State/Province: HI
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: Annually
Data Presentation Form: Profile (digital)
Entity Attribute Overview:

Hydro-acoustic data in raw voltage

Support Roles

Data Steward

CC ID: 5884
Date Effective From: 2006-08-31
Date Effective To:
Contact (Person): Domokos, Reka
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: reka.domokos@noaa.gov
Phone: (808)725-5368
Business Hours: 8:00 a.m. - 4:30 p.m. M-F

Distributor

CC ID: 264719
Date Effective From: 2015-12-16
Date Effective To:
Contact (Organization): Pacific Islands Fisheries Science Center (PIFSC)
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: pifsc.info@noaa.gov
Phone: 808-725-5360
URL: https://www.pifsc.noaa.gov
Business Hours: 8:00 a.m. - 4:30 p.m.

Metadata Contact

CC ID: 7461
Date Effective From: 2006-08-31
Date Effective To:
Contact (Person): Domokos, Reka
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: reka.domokos@noaa.gov
Phone: (808)725-5368
Business Hours: 8:00 a.m. - 4:30 p.m. M-F
Contact Instructions:

Email

Point of Contact

CC ID: 264718
Date Effective From: 2006-08-31
Date Effective To:
Contact (Person): Domokos, Reka
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: reka.domokos@noaa.gov
Phone: (808)725-5368
Business Hours: 8:00 a.m. - 4:30 p.m. M-F

Extents

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 5882
W° Bound: 130
E° Bound: -140
N° Bound: 36
S° Bound: -20
Description

Pacific Ocean, South Central Pacific, North Central Pacific, North Western Pacific, Hawaii, American Samoa, Hawaiian Islands seamounts

Extent Group 1 / Time Frame 1

CC ID: 17405
Time Frame Type: Continuing
Start: 2004-03

Access Information

Security Class: Unclassified
Data Access Procedure:

Contact Reka Domokos (reka.domokos@noaa.gov)

Data Access Constraints:

None

Metadata Access Constraints:

None

Metadata Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 265400
Download URL: https://maps.ngdc.noaa.gov/viewers/water_column_sonar/index.html
Distributor:

Distribution 2

CC ID: 768211
Start Date: 2016
End Date: Present
Download URL: https://doi.org/doi:10.7289/V5W093WG
Distributor:
Description:

SE1501

Distribution 3

CC ID: 768210
Start Date: 2013
End Date: Present
Download URL: https://doi.org/doi:10.7289/V53776PJ
Distributor:
Description:

SE1102

Distribution 4

CC ID: 768209
Start Date: 2013
End Date: Present
Download URL: https://doi.org/doi:10.7289/V57S7KQ9
Distributor:
Description:

SE0902

Data Quality

Quality Control Procedures Employed:

N/A

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
Approximate Delay Between Data Collection and Dissemination: 1 year
Actual or Planned Long-Term Data Archive Location: NCEI-CO
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?:

Data are archived at NCEI-CO

Lineage

Lineage Statement:

Data are collected in the field by PIFSC staff.

Catalog Details

Catalog Item ID: 2711
GUID: gov.noaa.nmfs.inport:2711
Metadata Record Created By: Brent M Miyamoto
Metadata Record Created: 2006-08-31 11:17+0000
Metadata Record Last Modified By: Sarah Kunkel
Metadata Record Last Modified: 2022-11-06 22:56+0000
Metadata Record Published: 2015-12-22
Owner Org: PIFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2015-12-22
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2016-12-22