BROKE West Survey, Marine Science Cruise AU0603 - Oceanographic Field Measurements and Analysis

Oceanographic measurements around the 'BROKE-West' survey area along the Antarctic continental margin between 30 degrees and 80 degrees south were conducted aboard Aurora Australis cruise au0603 (voyage 3 2005/2006, 2nd January to 12th March 2006). A total of 120 CTD vertical profile stations were taken, most to within 15 m of the bottom. Over 2500 Niskin bottle water samples were collected for the measurement of salinity, dissolved oxygen, nutrients (phosphate, nitrate+nitrite, silicate and ammonia), 18O, dissolved inorganic carbon, alkalinity, particulate organic carbon/nitrogen/silicate, dimethyl sulphide, and biological parameters, using a 24 bottle rosette sampler. Full depth current profiles were collected by an LADCP attached to the CTD package, while near surface current profile data were collected by a ship mounted ADCP. Data from the array of ship's underway sensors are included in the data set.


This report describes the processing/calibration of the CTD and ADCP data, and details the data quality. An offset correction is derived for the underway sea surface temperature and salinity data, by comparison with near surface CTD data. LADCP data are not discussed in this report. Note that the data processor was not a cruise participant, thus this report does not describe all details of the shipboard field data collection or the problems encountered. CTD station positions are shown in Figures 1a and b, while CTD station information is summarised in Table 1. Niskin bottle sampling at each station is summarised in Table 2. (see word document detailed below for figures and tables)


Further information is available in a word document available as part of the download.


This work was completed as part of ASAC projects 2655 and 2679 (ASAC_2655, ASAC_2679).

Simple

Identification info

Alternate title
BROKE West Survey, Marine Science Cruise AU0603 - Oceanographic Field Measurements and Analysis
Date (Publication)
2019-05-27
Edition
2
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:10.26179/5ceb6d79c35a4

Originator

Rosenberg, M. and Gorton, R.

Publisher

Australian Antarctic Data Centre

Principal investigator

ROSENBERG, MARK
ACE CRC, c/- University of Tasmania
Private Bag 80
Hobart
Tasmania
7001
Australia

Collaborator

ROSENBERG, MARK
ACE CRC, c/- University of Tasmania
Private Bag 80
Hobart
Tasmania
7001
Australia

Collaborator

GORTON, REBECCA
Australian Antarctic Division
Australian Antarctic Data Centre
Channel Highway
Kingston
Tasmania
7050
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/BROKE-West_CTD_au0603

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
Topic category
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2006-01-02 2006-03-12
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
  • EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
  • EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY
  • EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY
Keywords
  • STATION
  • DEPTH
  • CONDUCTIVITY
  • TEMPERATURE
  • SALINITY
  • CTD
NASA/GCMD Earth Science Keywords
  • CTD > Conductivity, Temperature, Depth
  • NISKIN BOTTLES
NASA/GCMD Earth Science Keywords
  • SHIPS
  • R/V AA > R/V Aurora Australis
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • AMD
  • CEOS
  • 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 download from the provided URL. A pdf document providing further information about the data is also included.

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_CTD_au0603 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

Distributor

Fees
Free
Planned available datetime
2019-05-27T00:00:00
Units of distribution
MB
Transfer size
8.5
Distribution format
  • matlab, binary

OnLine resource
GET DATA

Download point for the data - data

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
SeaBird SBE9plus CTD serial 704, with dual temperature and conductivity sensors and a single SBE43 dissolved oxygen sensor (on the primary sensor pump line), was used for the entire cruise, mounted on a SeaBird 24 bottle rosette frame, together with a SBE32 24 position pylon and 22 x 10 litre General Oceanics Niskin bottles. The following additional sensors were mounted: * Benthos model 2110 altimeter * Tritech 200 kHz and 500 kHz altimeters * Wetlabs fluorometer serial 296 * photosynthetically active radiation (i.e. PAR) sensor * Wetlabs C-star transmissometer serial 899DR * Sontek lowered ADCP (i.e. LADCP) with upward and downward looking transducer sets CTD data were transmitted up a 6 mm seacable to a SBE11plusV2 deck unit, at a rate of 24 Hz, and data were logged simultaneously on 2 PC's using SeaBird data acquisition software 'Seasave'. The LADCP was powered by a separate battery pack, and data were logged internally and downloaded after each CTD cast. Note that physical mounting of the upward looking LADCP transducer set requires removal of 2 Niskin bottles, thus only 22 Niskins were fitted for the cruise. The CTD deployment method was as follows: * CTD initially deployed down to ~20 m * after confirmation of pump operation, CTD returned up to just below the surface (depth dependent on sea state) * after returning to just below the surface, downcast proper commenced. For most casts, the package was stopped for 5 minutes on the upcast at ~50 m above the bottom, for logging of LADCP bottom track data. Pre cruise temperature, conductivity and pressure calibrations were performed by the CSIRO Division of Marine and Atmospheric Research calibration facility (Table 3) (July to August 2005). Manufacturer supplied calibrations were used for the dissolved oxygen, fluorometer, transmissometer and altimeters. PAR data are uncalibrated. Final conductivity and dissolved oxygen calibrations derived from in situ Niskin bottle samples are listed later in the report.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2010-08-23 - record updated by Dave Connell to publicly release the data. 2012-06-05 - record updated by Dave Connell to link other CTD data archived by Bec Gorton. 2016-10-18 - record updated by Dave Connell to add a dataset DOI. 2019-05-21 - record updated by Dave Connell - basic updates. 2019-05-27 - record updated by Dave Connell after a new version of the data was provided by Mark Rosenberg.

Metadata

Metadata identifier
string/BROKE-West_CTD_au0603

Language
English
Character encoding
UTF8

Author

GORTON, REBECCA
Australian Antarctic Division
Australian Antarctic Data Centre
Channel Highway
Kingston
Tasmania
7050
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
9efca3b4-6c0a-4a84-af9e-76176fb20fd5

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2019-05-27T14:52:30

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_CTD_au0603

Point of truth for the metadata record

Date info (Creation)
2006-03-02T00:00:00
Date info (Last Update)
2019-05-27

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

Overviews

Spatial extent

N
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E
W


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