[ View Brief Record ] [ Get Data ] [ Update this Record ]

Summary

The present-day observed change in sea level is the sum of several factors, including the continuing readjustment of the crust to the past redistribution of the surface ice-water load and any present-day melting of the Antarctic ice sheet. Constraints can be provided on both of these contributions by measuring the magnitude of the crustal rebound using the Global Positioning System. ... By combining the measurements with other estimates of sea-level change, it becomes possible to separate the two contributions. This will lead to both improved mass balance models for the ice-ocean system and improved understanding of present sea-level change.

GPS Data:

GPS data collected at sites near the Lambert Glacier. Ashtech Z-12 GPS receivers, 24 hr data files, 30 s sampling, 10 deg cutoff elevation, Ashtech cone-shaped radome used.

1998
----

Beaver Lake (BVLK): days of year 012-083 (024 and 028 data corrupted)

1999
----

Beaver Lake (BVLK): days of year 022-058.

2000
----

Beaver Lake (BVLK):037-044, 308-331.
Daltons Corner (DALT): 045-072.
Landing Bluff (LDBF): 346-366.

2001
----

Beaver Lake (BVLK): 008-028.
Dalton Corner (DALT): 008-026.
Landing Bluff (LDBF): 001-108, 114, 123, 343-365.

2002
----

Beaver Lake (BVLK): 006-082 (system now hibernating)
Landing Bluff (LDBF): 001-> (still collecting data)
Dalton Corner (DALT): started recording day 010.


BVLK: 002,006-092,103,263-264,274
LDBF: 001-107, 128-130,322-365
DALT: 010-030,343-365
KOMS (Komsomolskiy Peak): 362-365

2003
----

BVLK: 001-102, 358-365
LDBF: 001-104, 331-343
DALT: 001-105, 260-306, 353-365
KOMS: 001-108, 271-342

2004
----

BVLK: 2004 data and archive report
LDBF: 2004 data and archive report
DALT: site not visited during last field season, and therefore not downloaded.
KOMS: site not visited during last field season, and therefore not downloaded.

2005
----

BVLK: 070-241
DALT: 1101-1111, 2431-3261
LDBF: 0011-3651

2006
----

LDBF: 0011-3651

2007
----

DALT: 0170-1120
LDBF: 0011-0991
RICH (Richardson Lake, Enderby Land): 0060-1290


Diagnostic Data:
The diagnostic data are updated on a daily basis for those sites which have active satellite communication facilities. For other sites, the data are only retrieved on an opportunistic basis as it has to be physically downloaded from the machine. Diagnostic data are only available from 2000 onwards.

Diagnostic data were collected at a test site, davi, located at Davis during 2000. The equipment was subsequently removed and redeployed in the PCMs after 2000. We did not install a GPS receiver at Davis; only diagnostic data were collected by the test installation.

Further information about the Richardson Lake site is available from the URL given below.

This work was completed as part of ASAC project 1112 - Crustal rebound in the Lambert Glacier area.

The fields in this dataset are:
Year
Month
Day
Hour
Minute
Second
Battery Voltages (bat1, bat2, bat3)
Solar Panel Voltage switched across a 10 ohm resistor (pvp1, pvp2, pvp5)
Fuel Cell Input Voltage (no longer used)
Internal Temperature (temp1, temp2, temp3)
External Temperature (temp4)
Battery Status (good, low, flat, sick, dead), connected to Fuel Cell (FC) - y/n
Heater Status (on - y/n - if hibernating, shows hhh)

Geographic Coverage Spatial coordinates   

Temporal Coverage

Start Date: 1998-01-12 Stop Date: 1998-02-05 Start Date: 1999-01-22 Stop Date: 1999-02-03 Start Date: 2000-01-01 Stop Date: 2000-12-31 Start Date: 2001-01-01 Stop Date: 2001-12-31 Start Date: 2002-01-01 Stop Date: 2002-03-28

Location Keywords

CONTINENT > ANTARCTICA SOLID EARTH > CRUST GEOGRAPHIC REGION > POLAR

Science Keywords

SOLID EARTH > GEODETICS/GRAVITY > CRUSTAL MOTION SOLID EARTH > TECTONICS > ISOSTATIC REBOUND SOLID EARTH > GEODETICS/GRAVITY > CONTROL SURVEYS

ISO Topic Category

GEOSCIENTIFIC INFORMATION

Instrument

GPS > Global Positioning System GPS RECEIVERS

Access Constraints

The full GPS dataset will be available to the general public after 5 year embargo period beginning January 12, 1998.

Currently 1998-2002 data are available.

GPS Data may be made available before this time under special arrangements. Diagnostic data available now from the url given below.

The data have been gzipped and hatanaka compressed. Un-gzipping the files will convert them to readable ascii files.

Use Constraints

Data cannot be used by other parties for the purposes of estimating velocities of the GPS sites.

Technical contact must be contacted before using this data.

Ancillary Keywords

ANTARCTICA BATTERY VOLTAGES DAY FUEL CELL INPUT VOLTAGE GLACIAL ISOSTATIC ADJUSTMENT GPS DATA HOUR LAMBERT GLACIER MINUTE MONTH SECOND SOLAR PANEL VOLTAGE TEMPERATURE YEAR

Data Set Progress

IN WORK

Originating Center

Research Sch. of Earth Sci. ANU

Data Center

Australian Antarctic Data Centre, Australia Data Center URL: http://data.aad.gov.au Data Center Personnel Name: DATA OFFICER AADC Phone: +61 3 6232 3244 Fax: +61 3 6232 3351 Email: metadata at aad.gov.au Contact Address: Australian Antarctic Division 203 Channel Highway City: Kingston Province or State: Tasmania Postal Code: 7050 Country: Australia

Distribution

Distribution Media: HTTP Distribution Size: 259 MB Fees: free

Personnel

PAUL TREGONING Role: INVESTIGATOR Role: TECHNICAL CONTACT Role: DIF AUTHOR Phone: +61 2 6249 5510 Fax: +61 2 6249 5443 Email: pault at rses.anu.edu.au Contact Address: Geodynamics Group Mills Rd The Australian National University Research School of Earth Sciences City: Canberra Province or State: Australian Capital Territory Postal Code: 2601 Country: Australia KURT LAMBECK Role: INVESTIGATOR Phone: +61 2 6249 5445 Fax: +61 2 6249 5443 Email: kurt.lambeck at anu.edu.au Contact Address: Geodynamics Group Mills Rd The Australian National University Research School of Earth Sciences City: Canberra Province or State: Australian Capital Territory Postal Code: 2601 Country: Australia HERBERT MCQUEEN Role: INVESTIGATOR Phone: +61 2 6249 5515 Fax: +61 2 6249 5443 Email: herb at rses.anu.edu.au Contact Address: Mills Rd The Australian National University Research School of Earth Sciences Geodynamics Group City: Canberra Province or State: Australian Capital Territory Postal Code: 2601 Country: Australia

Related URL

Link: GET DATA Description: Download page for the Australian Antarctic Data Centre Link: VIEW PROJECT HOME PAGE Description: Public information for ASAC project 1112 Link: VIEW RELATED INFORMATION Description: Web page which describes the GPS monitoring project, the equipment used, site photographs etc. It also shows the limited results to date and has links to related publications. Link: VIEW RELATED INFORMATION Description: Antarctic GPS Project - Diagnostic Data Link: VIEW RELATED INFORMATION Description: Further information about the Richardson Lake site Link: VIEW RELATED INFORMATION Description: Citation reference for this metadata record and dataset

Publications/References

Tregoning P., Twilley B., Hendy M., Zwartz D. (1999) Monitoring isostatic rebound in Antarctica with the use of continuous remote GPS observations GPS Solutions 2(3). 70-75

Zwartz D., Bird M., Stone J., Lambeck K. (1998) Holocene sea-level change and ice-sheet history in the Vestfold Hills, East Antarctica. Earth and Planetary Science Letters 155. 131-145

... Zwartz D., Lambeck K., Bird M., Stone J. (1997) Constraints on the former Antarctic ice sheet from sea-level observations and geodynamic modelling The Antarctic Region: Geological Evolution and Processes 821-828

Zwartz D., Tregoning P., Lambeck K., Johnston P., Stone J. (1999) Estimates of present-day glacial rebound in the Lambert Glacier region, Antarctica Geophysical Research Letters 26 (10). 1461-1464

Tregoning P., Welsh A., McQueen H., Lambeck K. (2000) The search for postglacial rebound near the Lambert Glacier, Antarctica Earth, Planets and Space 52. 1037-1041;

Creation and Review Dates

DIF Creation Date: 1999-12-17 Last DIF Revision Date: 2008-04-10

Reformat as FGDC document

View Text Only Format

[ View Brief Record ] [ Get Data ] [ Update this Record ]