Shallow ice core data: LGB traverses 1989-95Entry ID: LGB_Cor_traverse
Abstract: The Lambert Glacier Basin (LGB) series of five oversnow traverses were conducted from 1989-95. Several shallow depth ice cores (15-60 m) were drilled at selected sites along 2014 km of the main traverse track from LGB00 (68.6543 S, 61.1201 E) near Mawson Station to LGB72 (69.9209 S,76.4933 E) near Davis Station, and at selected sites along a western traverse line from LGB00 toward Enderby Land.
... Ice cores have been kept in cool storage at a local cold room storage facility. Data from the cores (density, stratigraphy, granularity, conductivity, ....) have been saved in various spreadsheet files (mainly MS Excel).
Summary data can be obtained from CRC Research Note No.09 'Surface mass balance and snow surface properties from the LambertGlacier Basin Traverses 1990-94'.
This work was completed as part of ASAC projects 3 and 2216.
Some of this data have been stored in a very old format. The majority of files have been updated to current formats, but some files (kaleidograph files in particular) were not able to be modified due to a lack of appropriate software. However, these files are simply figures, and can be regenerated from the raw data (also provided).
The fields in this dataset are:
Data Set Citation
Dataset Originator/Creator: Allison, I.
Dataset Title: Shallow ice core data: LGB traverses 1989-95
Dataset Series Name: CAASM Metadata
Dataset Release Date: 1999-10-07
Dataset Publisher: Australian Antarctic Data CentreOnline Resource: https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD...
Start Date: 1989-11-01Stop Date: 1995-02-28
Quality Not all quantities have as yet been measured for all cores. Shallow ice cores to a depth of 15 m (70-80 mm diameter) were hand drilled with the Polar Ice Coring Office (PICO) lightweight fibreglass drill. Deeper cores, 20-60 m, (75-92 mm diameter) were obtained with the use of an in-house designed and built electro mechanical (Wehrle) drill. Cores were generally logged for density (tape measure ... for length, vernier caliper for diameter and mechanical beam balance for weight), stratigraphy (visual,tape measure), grain size ('times 7, loupe) and electrical conductivity (in-house designed and built conductivity rig) on site in the field, then bagged for return to Australia and subsequent logging of oxygen isotope ratios and selected chemical species analysis. Surface densities agreed well with those from 2 m cores and shallow surface measurements taken alongside drill sites. Stratigraphy has been compared quite favourably with local mean annual accumulation rates from marker cane measurements. Other parameters need to be judged against quantities like local mean annual surface temperature and the expectations of ice rheology and/or modelling. Geographic positions for shallow ice core drilling sites were given as LGB station geodetic GPS survey fixes (1-5 m horizontal). Actual core locations were generally some 50-200 m from the survey points; any such minor inaccuracies in geographical positioning were largely irrelevant.
Access Constraints The data are available for download from the provided URL. The physical documents are catalogued under record number b15/118 in the Australian Antarctic Division records store.
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=LGB_Cor_... when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 10088 KB
Distribution Media: HTTP
Distribution Size: 91 KB
Distribution Format: pdf
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1999-10-07
Last DIF Revision Date: 2017-08-24