Record Search Query:[Parameters: Topic='PALEOCLIMATE', Term='ICE CORE RECORDS']
Holocene climate history obtained from ice cores, snow profiles (density, chemistry, structure), snow samples (dust origin) and climate measurements from the Baldwin Glacier, Victoria Land Coast, Antarctica
Abstract:
To understand the drivers and consequences of climate change on timescales important to humans, the paleoclimate of ice cores, the glacial system and local climate patterns were analysed from the Baldwin Glacier. The Baldwin Gacier serves as a reference record for an examination of the Victoria Lower Glacier. During the 99-00 season, two firn cores were recovered (12.2 and 31.1m deep). The 12.2m ... core was used to establish a density record, the 31.1m core was sent to NZ and USA for analyses. A snow profile from 0-1.8m was cut, visually logged, the density measured and analysed for isotopic composition and chemistry. Borehole temperatures were measured. In the 00-01 season a 4m snow profile was sampled in 1cm resolution for major ion content, isotope ratios and in 5cm resolution for dust flux and beta radioactivity. Temperature, crystal geometry and density were measured on site. Contemporary snow samples during different synoptic weather conditions were sampled and dust samples from the rocky outcrops around the glacier were taken to allow the source area of the dust in the ice cores to be determined. A radiation and snow temperature flux device was installed during field work to measure incoming and outgoing radiation and the temperature at different heights in the snow pack. Hourly weather observations were recorded and glacier topography was surveyed in the the study area using differential static GPS.
Quality
Data from OZCAM data providers have not been verified or checked in a systematic way, although some contributing institutions may have done a more or less rigorous check of the quality of the data. Data are often sourced from specimen labels, particularly for old museum specimens and inaccuracy is often due to this fact.
Access Constraints
Data supplied to OBIS by museums around Australia via OZCAM are freely accessible by the public. The data supplied may not represent the total holdings of any one institution as data about incompletely identified specimens, manuscript names and specimens where a georeference cannot be calculated have normally been withheld from publication.
Use Constraints
Data users should acknowledge the Museum and Art Gallery of the Northern Territory (MAGNT) and also OZCAM, Australia's Fauna.
Acknowledge the use of specific records from the Australian museum in the form appearing in the 'Citation' field thereof (if any); and acknowledge the use of the OBIS facility.
For information purposes, email to obissupport@marine.rutgers.edu the full citation of any publication made (printed or electronic) that cites OBIS or any constituent part.
