ADBEX I cruise to the Prydz Bay region, 1982: nutrient dataEntry ID: ADBEX_I_nutrient
Abstract: From the abstract and introduction of ANARE Research Notes 44 - ADBEX I cruise to the Prydz Bay region, 1982: nutrient data.
Nitrate, phosphate and silicate concentrations obtained during the ADBEX I cruise to the Prydz Bay region in November and December 1982 are plotted with depth and the raw data are tabulated. Location of the sampling stations and the average concentration of each nutrient ... in the top 100 m of the water column is mapped.
The ADBEX I (Antarctic Division BIOMASS Experiment) cruise is part of a long-term, national program of field surveys aimed at fulfilling the objectives of the BIOMASS (Biological Investigation of Marine Antarctic Systems and Stocks) program. The ADBEX I cruise on MV Nella Dan to the Prydz Bay region between 19 November and 17 December 1982, is the second Antarctic Division cruise to contribute to BIOMASS, the first being FIBEX (First International Biomass Experiment) in 1981.
Nutrient data were collected at twenty-eight of the seventy-nine hydrographic stations to provide information for the interpretation of phytoplankton distribution and abundance. The sampling locations and depths were not selected, therefore, on the basis of nutrient-related considerations.
The concentration of nitrate, phosphate and silicate is plotted to 600 m for each station and where casts were much deeper or much shallower, a second plot is shown. To show water column structure at the time of sampling, sigma-t values were also plotted, unless data for a cast were unavailable. In addition to the depth profiles, the average concentration to 100 m of each nutrient species is mapped to give a first-order approximation of the horizontal pattern of nutrient distribution in the upper layers.
Start Date: 1982-11-19Stop Date: 1982-12-17
Quality Taken from the Methods section of the referenced paper:
Water samples were collected at the different depths using a rosette sampler with 5 L Niskin bottles in conjunction with the CTD unit. Sub-samples of 250 mL were filtered through GF/F glass fibre filters, transferred to Whirlpacks and immediately frozen for analysis in Australia.
Analyses were carried out by the Australian Government Analytical Laboratories with the standard methods of Grasshoff, K., Ehrhardt, M., Kremling, K. (1976) Methods of Seawater Analysis; Verlag Chemie.
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Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: dave.connell at aad.gov.au
Australian Antarctic Division 203 Channel Highway
Province or State: Tasmania
Postal Code: 7050
Humphries, S.E. (1987) ADBEX I cruise to the Prydz Bay region, 1982: nutrient data. ANARE Research Notes 44. 83 pp.
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DIF Creation Date: 2008-09-12
Last DIF Revision Date: 2014-01-13