Data

Natural Freeze-drying of Water-degraded Timber Structures: Feasibility Study

Australian Antarctic Division
Ambrose, W. ; AMBROSE, WALLACE
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/ASAC_156&rft.title=Natural Freeze-drying of Water-degraded Timber Structures: Feasibility Study&rft.identifier=http://data.aad.gov.au/metadata/ASAC_156&rft.publisher=Australian Antarctic Data Centre&rft.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:DateTimeTemperatureAtmospheric PressureIce WeightWood WeightWindspeedProgress Code: completed&rft.creator=Ambrose, W. &rft.creator=AMBROSE, WALLACE &rft.date=2000&rft.coverage=westlimit=72.0; southlimit=-68.0; eastlimit=72.0; northlimit=-68.0&rft.coverage=westlimit=72.0; southlimit=-68.0; eastlimit=72.0; northlimit=-68.0&rft_rights= These data are publicly available for download from the provided URL. &rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights= 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=ASAC_156 when using these data. &rft_rights=This metadata record is publicly available.&rft_subject=structure&rft_subject=EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE > BUILDINGS&rft_subject=ARTEFACTS&rft_subject=BUILDINGS&rft_subject=DATE&rft_subject=FREEZE-DRYING&rft_subject=ICE WEIGHT&rft_subject=PRESERVATION&rft_subject=TEMPERATURE&rft_subject=TIME&rft_subject=VENTILATION&rft_subject=VENTURI&rft_subject=WINDSPEED&rft_subject=WOOD WEIGHT&rft_subject=ANEMOMETERS&rft_subject=HUMIDITY SENSORS&rft_subject=TEMPERATURE SENSORS&rft_subject=ANEROID PRESSURE SENSOR&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=AMD&rft_subject=CONTINENT > ANTARCTICA > Davis&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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Licence & Rights:

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CC-BY

Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode


These data are publicly available for download from the provided URL.


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=ASAC_156 when using these data.

This metadata record is publicly available.

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Full 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

Lineage

Progress Code: completed

Data time period: 1990-12-12 to 1993-02-02

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72,-68

72,-68

text: westlimit=72.0; southlimit=-68.0; eastlimit=72.0; northlimit=-68.0

Subjects
AMD | AMD/AU | ANEMOMETERS | ANEROID PRESSURE SENSOR | ARTEFACTS | BUILDINGS | CEOS | CONTINENT > ANTARCTICA > Davis | DATE | EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE > BUILDINGS | FREEZE-DRYING | GEOGRAPHIC REGION > POLAR | HUMIDITY SENSORS | ICE WEIGHT | PRESERVATION | TEMPERATURE | TEMPERATURE SENSORS | TIME | VENTILATION | VENTURI | WINDSPEED | WOOD WEIGHT | structure |

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Other Information
Download point for the data. (GET DATA)

uri : http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=1505

Public information for ASAC project 156 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/search_projects_results.cfm?project_no=156

Citation reference for this metadata record and dataset (VIEW RELATED INFORMATION)

uri : http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_156

Identifiers
  • global : ASAC_156