Hydroacoustic data collected onboard the Aurora Australis during voyage 3 of the 2005-2006 season (BROKE-West)

This dataset contains data files, processing templates and documentation relating to the BROKE-West multifrequency echosounder (acoustic) survey carried out from the RSV Aurora Australis in the austral summer of 2005/06 (ASAC project 2655). The primary aim of the acoustic survey was to describe the distribution and abundance of Antarctic krill (Euphausia superba) in CCAMLR Division 58.4.2. However, these data are also relevant for studies of other sound-scattering targets detected by the echosounder system, for example other pelagic taxa or the seafloor.

The dataset is a collection of *.csv data files, *.ev processing files and *.pdf documentation files, organised into 4 categories:

1. Acoustic survey: data files relating to the transects undertaken for the acoustic survey 2. Acoustic data processing: metadata files, processing templates and documentation relating to the collection and processing of the acoustic data 3. Acoustic results: results arising from the processing of the raw data. The raw data are described in a separate metadata record - "AAD Hydroacoustics hard disks - data collected from Southern Ocean cruises..." 4. Ancillary data: additional non-acoustic data used during the processing of the acoustic data

The file "data_fields.pdf" lists and describes the fields in each of the *.csv data files.

The file "processing_methods.pdf" provides a synopsis of the methods by which the raw acoustic data were collected and processed.

The BROKE-West survey was conducted on voyage 3 of the Aurora Australis during the 2005-3006 season. It was intended to be a comprehensive biological and oceanographic survey of the region between 30 degrees and 80 degrees east.

Identification info

Alternate title: Hydroacoustic data collected onboard the Aurora Australis during voyage 3 of the 2005-2006 season (BROKE-West)

Date (Publication): 2010-08-20

Edition: 1

Citation identifier

Dataset DOI

Title: Information and documentation - Digital object identifier system

Date (Publication): 2012-04-23

Citation identifier: ISO 26324:2012

Citation identifier: doi:10.4225/15/57590CA3CFDD5

Originator

Jarvis, T.

Publisher

Australian Antarctic Data Centre

Principal investigator

JARVIS, TOBY

Collaborator

JARVIS, TOBY

Name: CAASM Metadata

Website: https://data.aad.gov.au/metadata/records/BROKE-West_hydroacoustic_dataset

Status: Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

+61 3 6232 3244

+61 3 6232 3351 (facsimile)

Topic category

Oceans

Extent

N

S

E

W

Extent

Description: Temporal Coverage

Temporal extent

TimePeriod: 2006-02-02 2006-03-12

NASA/GCMD Earth Science Keywords

EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS
EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS
EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON
EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS

Keywords

Euphausia superba

NASA/GCMD Earth Science Keywords

ECHO SOUNDERS

NASA/GCMD Earth Science Keywords

SHIPS
R/V AA > R/V Aurora Australis

NASA/GCMD Earth Science Keywords

AMD/AU
CEOS
AMD
ACE/CRC

NASA/GCMD Earth Science Keywords

OCEAN > SOUTHERN OCEAN
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR

Resource constraints

Use limitation: This metadata record is publicly available.

Resource constraints

Access constraints: licence

Other constraints: These data are publicly available for access, but are too large to be downloaded. They are available on request to the Australian Antarctic Data Centre.

Resource constraints

File type: Portable Network Graphic

Linkage: Creative Commons by Attribution logo

Title: Attribution 4.0 International (CC BY 4.0)

Website: https://creativecommons.org/licenses/by/4.0/legalcode
Legal code for Creative Commons by Attribution 4.0 International license

Use constraints: licence

Other constraints: This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=BROKE-West_hydroacoustic_dataset when using these data.

Language: English

Character encoding: UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

+61 3 6232 3244

+61 3 6232 3351 (facsimile)

Distributor

Fees: free

Planned available datetime: 2010-08-20T00:00:00

Units of distribution: GB

Transfer size: 2.48

Distribution format

csv, ev, excel, word

OnLine resource: GET DATA
Data request form

OnLine resource: PROJECT HOME PAGE
Public information for ASAC project 2655

OnLine resource: PROJECT HOME PAGE
Public information for ASAC project 2679

OnLine resource: VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset

Resource lineage

Statement: There are two minor issues regarding the EDSU-level NASC and rho data representing krill: 1. The files "edsu-2000-250-250_120H_nasc-rho_krill_meth1.csv" and "edsu-2000-250-250_120H_nasc-rho_krill_meth2.csv" do not contain valid seafloor depth values due to an oversight when exporting the original bin-level data from Echoview. It would be possible to rectify this if there were sufficient cause, although it would be a lengthy process. It would be sufficient to use the seafloor data from the file "edsu-2000-250-006_120H_nasc-rho_krill_meth3.csv" instead, but note issue 2 below. 2. The definitions for a number of EDSUs along Transect 2 in the file "edsu-2000-250-006_120H_nasc-rho_krill_meth3.csv" are mismatched by 1-2 minutes from those in the files "edsu-2000-250-250_120H_nasc-rho_krill_meth1.csv" and "edsu-2000-250-250_120H_nasc-rho_krill_meth2.csv", resulting in the delineation of 1 additional EDSU. This affects the data between 25-Jan-2006 15:31 (UTC) and 26-Jan-2006 16:22 (UTC). The cause of this is unclear at present, but is likely to relate to the implementation of positional information within Echoview and minor variation arising from the export of different varaiables from Echoview. Given the short offset, the significant of this difference appears to be negligible.

Hierarchy level: Dataset

Maintenance and update frequency: As needed

Maintenance note: 2008-03-03 - Metadata record created by Alicja Mosbauer. 2008-04-24 - record updated by Dave Connell. 2010-08-20 - record updated by Dave Connell to publicly release the data. 2016-06-09 - record updated by Dave Connell to add a dataset DOI.

Metadata

Metadata identifier: string/BROKE-West_hydroacoustic_dataset

Language: English

Character encoding: UTF8

Author

MOSBAUER, ALICJA

National Oceans Office

GPO Box 2139

Hobart

Tasmania

7000

AUSTRALIA

Sponsor

Australian Antarctic Division

Owner

AADC

Title: Parent Metadata Record

Citation identifier: BROKE-West

Type of resource

Resource scope: Dataset

Alternative metadata reference

Title: gov.nasa.gsfc.gcmd

Citation identifier: b2c94fad-400d-4869-bd0e-a1ed0ab0fccc

Alternative metadata reference

Title: gov.nasa.gsfc.gcmd

Date (Last Revision): 2015-11-29T19:38:26

Identifier

Description: metadata.extraction_date

Alternative metadata reference

Title: gov.nasa.gsfc.gcmd

Citation identifier: 8.6

Metadata linkage: http://data.aad.gov.au/metadata/records/BROKE-West_hydroacoustic_dataset
Point of truth for the metadata record

Date info (Creation): 2008-03-02T00:00:00

Date info (Last Update): 2017-04-26

Metadata standard

Title: ISO 19115-3

Edition: 2014

Other citation details: Version 1

Title: DIF to ISO 19115-1 Profile

Overviews

Spatial extent

N

S

E

W

Provided by

Access to the record in catalogue

Read here the full details and access to the data.

Associated resources

Not available