7 year oxygen isotope results from samples taken on Antarctic Plateau traverse, 1984Entry ID: oxygen-isotopes-plateau-1984
Abstract: A total of nine stations were sampled for oxygen isotopes during the 1984 spring traverse to the Antarctic Plateau. The aim of this program was to take a number of samples from a core or a pit, at stations of known accumulation over a particular period, to see how far inland the annual cycles could accurately be traced. The samples were not taken at ice movement stations, but at canes each 2km ... along the line, to avoid sampling the accumulation, and thus isotope disturbance resulting from parking the vans beside the IMS poles in 1978 and 1979.
The accumulation for the cane at each sampled station was calculated for the six years since 1978, and the total multiplied by 7/6 to give the sampling depth required to cover 7 years. Seventy samples were taken at each station, i.e. approximately 10 per year. At most stations a PICO drill was used to obtain a core, and the samples cut with a stainless steel knife on the stainless sink in the living van. At the southern end of the line where the accumulation is much lower, the samples were taken from the wall of a pit, as the small length of core for each sample did not provide enough melt. The snow was sampled in the pits by sliding a flat sheet of galvanized iron into the snow at each interval starting at the top, and scraping the snow above this into a melt jar. Isotopic contamination of samples from both these methods should be negligible. All samples were melted in plastic jars, and then transferred into 5Oml plastic bottles. A total of 630 samples from 9 stations were returned to Australia for oxygen isotope analysis, carried out in Melbourne by Ted Vishart, Dick Marriot, and Gao Xiangqun.
The station/cane labels for the sample sites were:
V140/4 (near GC30)
V230/4 (near GC37)
V270/1 (near GC38)
V300/1 (near GC39)
V350/1 (near GC40)
V400/1 (near GC41)
V450/1 (near GC42)
V630/1 (near GC47)
The columns in the spreadsheet are:
Core depth (metres)
Oxygen isotope value (the number is a ratio of O18 per ml of O16, expressed as a percentage (but as parts per 1000 instead of 100))
Data Set Citation
Dataset Originator/Creator: Anderson, J.A.
Dataset Title: 7 year oxygen isotope results from samples taken on Antarctic Plateau traverse, 1984
Dataset Series Name: CAASM Metadata
Dataset Release Date: 2013-06-20
Dataset Publisher: Australian Antarctic Data CentreOnline Resource: https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD...
Start Date: 1978-01-01Stop Date: 1984-12-31
ISO Topic Category
Access Constraints These data are publicly available for download from the provided URL.
Use Constraints This data set conforms to the PICCCBY Attribution License
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=oxygen-i... when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 57 MB
Distribution Format: Excel, PDF
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Email: jason.anderson at utas.edu.au
Antarctic CRC University of Tasmania Grosvenor St
City: Sandy Bay
Province or State: Tasmania
Postal Code: 7005
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2013-07-11
Last DIF Revision Date: 2013-07-11