Record Search Query:[Parameters: Topic='PALEOCLIMATE', Term='LAND RECORDS', Variable_Level_1='BOREHOLES']
Investigation of the Holocene climate history from analysis of the glacial system, ice cores and snow samples from the Whitehall 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 Whitehall Glacier. GPR/GPS (8, 35, 200 and 500MHz) surveys were carried out to provide an image of the internal layering of the glacier and to map the topography of the bedrock-ice interface and internal ... flow structures beneath the glacier. Snow sequences were sampled with high (1cm) resolution for analysis on snow chemistry, isotopic composition, dust content and mineralogy. The ice cores and snow samples were measured for major cations, anions and methylsulfonate, trace elements, oxygen and hydrogen isotope ratio, gas analysis in ice core bubbles (CO2 and CH4), dust concentration and mineralogy, Si detection and tritium concentration and dating the ice core. A 100m core was extracted, measured and logged. Each 1m long core had its core temperature measured (within 5 mins of core recovery), weighed to calculate density and determine the depth of bubble close off and firn/ice transition and investigated for crystal structure, melt and dust/tephra layer occurrence. Analysis of volume, grain size and mineralogy was taken to determine the source and to infer wind pattern and strength. Small chips were used to study gas bubble properties (including porosity, gas bubble size and geometry). The borehole was measured for temperature and light penetrations after drilling.
Description:
The IGS global system of satellite tracking stations, Data Centers, and Analysis Centers puts high-quality GPS data and data products on line in near real time to meet the objectives of a wide range of scientific and engineering applications and studies.
Description:
The ice reader database hosts basic data from ice cores of the Antarctic Continent. The goal is to compile a complete list of cores by name, site, location and as much other information as possible
Description:
Publishing Network for Geoscientific & Environmental Data This database contains information regarding stable oxygen isotopes of snow pits at four sites: Polar Plateau, Victoria Lower Glacier, Wilson Piedmont Glacier and Baldwin Valley Glacier
HORIZONTAL POSITIONAL ACCURACY REPORT: The shoreline positions ... presented here were compiled using several historical map and near-vertical air photographic data sources and different analytical techniques. As such, there are a number of potential sources of error that affect the accuracy of the shoreline positions shown on the shoreline change maps. Analysis of the various sources of error suggests that the individual shoreline positions are generally accurate to within +/- 8.5 meters (28 feet).
Access Constraints
ACCESS CONSTRAINTS: None. These data are in the public domain. GIS files are freely available for download.
DISTRIBUTION LIABILITY: Although every effort has been made to ensure the accuracy of these data, errors and conditions originating from physical sources used to develop these data may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for ... the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. In no event shall CZM be liable for any damages, whether general, special, incidental or consequential damages, arising out of your use of these data. Your sole remedy for damages is to stop using the data. You agree to defend, indemnify, and hold harmless CZM and its employees against any claim, loss, liability or expense, including attorneys' fees, resulting from loss of or damage to property or the injury to or death of any person arising out of the use of the data.
Use Constraints
USE CONSTRAINTS: Public domain data from the Massachusetts Office of Coastal Zone Management (CZM), an agency of the Commonwealth of Massachusetts Executive Office of Energy and Environmental Affairs (EOEEA), are freely redistributable with proper metadata and source attribution. Please recognize the Massachusetts Office of Coastal Zone Management as the source of these data. You are not permitted ... to use CZM's name or to suggest that CZM endorses your project or product, without its express written consent. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CZM cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers. The user must be aware of data conditions and bear responsibility for the appropriate use of these data with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to these data.
FEES: GIS and coordinate files may be downloaded at no charge by following links on the Massachusetts Office of Coastal Zone Management website (http://www.mass.gov/czm/).
