1. Australian Antarctic Data Centre
2. Discover and Manage Data
3. Records
4. au9301

Description

Oceanographic measurements were conducted north of Heard Island from August 1993 to October 1993. A total of 58 CTD (conductivity, temperature and depth) vertical profile stations were taken, most to near bottom. Niskin bottle water samples were collected for the measurement of salinity, dissolved oxygen, nutrients (phosphate, nitrate+nitrite, silicate), chlorofluorocarbons, helium, tritium, dissolved inorganic carbon, alkalinity, carbon isotopes, dissolved organic carbon, dimethyl sulphide/dimethyl sulphoniopropionate, iodate/iodide, oxygen 18, primary productivity, and biological parameters, using a 24 bottle rosette sampler.

CTD salinity data have been calibrated against bottle samples. Upcast CTD burst data were no longer available, however comparison of bottle samples to CTD data from the equivalent downcast pressures gives a salinity accuracy of approximately 0.005 (PSS78). The bottle data file contains salinities and dissolved oxygens. Nutrient data exist only in files output from the laboratory analysis program 'DAPA', and are contained on floppy disks held by Andrew Forbes (CSIRO).

Measurement and data processing techniques are described, and a summary of the data are presented in graphical and tabular form.

The fields in this dataset are:
oceanography
ship
station number
date
start time
bottom time
finish time
cruise
start position
bottom position
finish position
maximum position
bottom depth
pressure
temperature (T-90)
salinity
sigma-T
specific volume anomaly
geopotential anomaly
dissolved oxygen
fluorescence
photosynthetically active radiation
niskin bottle number

Quality

See data report.

Access

Data stored as column formatted ascii data, and matlab format; data report is MS WORD 2000 document. The data are available for download from the provided URL.

Temporal Coverages

• Start date: 1993-08-07 - Stop date: 1993-10-09

Spatial Coverages

Science Keywords

• EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > DISSOLVED GASES
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITROGEN
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE
• EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > STABLE ISOTOPES
• EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
• EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY
• EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY
• EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA

Use 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=au9301 when using these data.