Heard Island glacier fluctuations and climatic change - 2003/04 Fieldwork

Brief description

This report describes the data collected for ASAC project 2363 (a continuation of ASAC 1158). A full report of the data collected and the work completed is available for download with the dataset.

The download file contains data in the following areas:

Ablation
Chemistry
DEM - Digital Elevation Model
Lagoon Bathymetry
Meltwater
Photos
Report
RES - Radio Echo Sounder
Surveys
Weather Observations

This CD contains data collected by the Heard Island glaciology team during the 2003-04 Australian Antarctic Division expedition, as well as some data from the previous expedition in November 2000. The data report associated with these files is provided as a PDF in the Report folder.

Description of data files available on CD

Ablation folder
survey_canes_ablation.xls
Excel file with the measured height of each survey wand above snow/ice surface for the field season.
BG35_pinger.xls
Excel file with sonic ranger data for BG35.
BG50_pinger.xls
Excel file with sonic ranger data for BG50.

Chemistry folder
Ion_Chemistry.xls
Excel file with analyses of chloride, sulphate, nitrate, Mg, Ca, Na of samples collected from crevasses and cores.
Oxygen_isotopes.xls
Excel file with dO18 analyses of samples collected from crevasses and cores.

DEM folder
dem_2003.grd
ASCII file with the 2003 DEM grid, generated using Golden Software Surfer v7.0. Header file format is:

id The identification string DSAA that identifies the file as an ASCII grid file.

nx nynx is the integer number of grid lines along the X axis (columns)
ny is the integer number of grid lines along the Y axis (rows)

xlo xhi xlo is the minimum X value of the grid
xhi is the maximum X value of the grid

ylo yhi ylo is the minimum Y value of the grid
yhi is the maximum Y value of the grid

zlo zhi zlo is the minimum Z value of the grid
zhi is the maximum Z value of the grid

grid row 1
grid row 2
grid row 3 -these are the rows of Z values of the grid, organized in row order. Each row has a constant Y coordinate. Grid row 1 corresponds to ylo and the last grid row corresponds to yhi. Within each row, the Z values are arranged from xlo to xhi. Blanked grid nodes are given a Z value of 1.070141E+038. Rows are 39.855 m apart, Columns are 40 m apart.

dem_11.xls
Excel file with all points used to calculate the dem_2003.xls grid (refer to A2).
The folder also contains high resolution jpeg images of Fig. 16 and the data distribution figure (A2).

Lagoon bathymetry folder
Folder containing Excel files with Easting, Northing (acquired using Garmin GPS V; WGS84, UTM zone 43) and depth (acquired using Garmin 'Fishfinder' depth sounder) for each lagoon surveyed. Also high resolution jpeg images of bathymetric maps reproduced in appendix A3.

Meltwater folder
Contains an excel file with stream profiles and flux calculations, and repeat measurements of Brown Lagoon outflow stream. Also contains jpeg photos of three of the inflow streams, and an image showing their location using the Quickbird satellite image for reference.

Photos folder
Contains jpeg digital photos used in this report.

Report folder
HI_data_report_screen.pdf
HI_data_report_print.pdf
This data report is reproduced as both a low and high resolution Adobe Acrobat PDF file, for on-screen viewing and printing respectively.

RES folder
BG_35_2000.xls
Excel file with RES data for the BG35 profile, 2000 field season.
RES.xls
Excel file with RES data for the BG25 and BG20 profiles, 2003-04 field season.

Surveys folder
all_survey_points.xls
Excel file with the position of the survey markers and additional points.
daily_position_BG50.xls
Excel file with daily (occasionally more frequent) DGPS position near BG50
kinematic_2000.xls
Excel file with all DGPS kinematic surveys conducted during the 2000 field season.
kinematic_surveys.xls
Excel file with all DGPS kinematic surveys conducted during the 2003-04 field season.
surface_site_surveys.xls
Excel file with the DGPS repeat survey positions of each survey site, for the 2000 and 2003-04 field seasons, and velocity calculations for each epoch.
terminus_surveys.xls
Excel file with the DGPS surveys of the position of the glacier terminus.

Weather observations folder
AANDERAA_data.xls
Excel file with data recorded by the automatic weather station at 550 m a.s.l.
all_data_comparison.xls
Excel file with compilation and graphs of all data from each of the Brown Glacier AWS.
MAWS1_data.xls
Excel file with data recorded by the automatic weather station at 115 m a.s.l.
MAWS2_data.xls
Excel file with data recorded by the automatic weather station at 920 m a.s.l.
precipitation_record.xls
Excel file with rain gauge records from Jacka Valley, Brown Hut, Spit Bay and Capsize Beach.
ttec_T_RH_data.xls
Excel file containing temperature and relative humidity data from the three T-TEC loggers, deployed at Jacka Valley, Capsize Beach, and Doppler Hill.
wx station photos folder
Folder containing jpeg photos of each of the weather stations, as well as the field camp observing sites. Missing is Spit Bay.