Brief description
The objectives of this project were:To gather data from a small scale experimental freeze-drying unit, using natural local conditions, with a view to extending the experiment to a larger scale installation sufficient to deal with timbers from archaeological shipwrecks and other timber constructions. The climate of the Vestfold Hills at Davis Base is exceptionally dry and, apart from a short summer period, the temperature is below freezing. The dryness and the low temperature of the area makes it a theoretically ideal location to naturally freeze-dry large water-logged wooden items. A small 2m3 container housing a selection of waterlogged wood has been installed below ground level. Water vapour from the frozen samples is extracted by a wind driven venturi system. Changes in temperature, sample weight, and air pressure are logged and the data are transferred regularly to Canberra.
The fields in this dataset are:
Date
Time
Temperature
Atmospheric Pressure
Ice Weight
Wood Weight
Windspeed
Issued: 2000-07-19
Data time period: 1990-12-12 to 1993-02-02
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AU-ANL:PEAU :
http://nla.gov.au/nla.party-617536
- global : 4e7d2f70-bbab-4304-8e99-352afd99398d
- DOI : 10.4225/15/55ED1B3E444FB
- Local : ASAC_156
- URI : https://data.aad.gov.au/metadata/records/ASAC_156
- URI : https://data.aad.gov.au/metadata/records/ASAC_156