Portal Home
Record Search Query: [Freetext='DIF/IDN_Node: AMD/NZ']
The structural glaciology and movement of the Victoria Upper Glacier, Victoria Valley, Antarctica
Entry ID: K064_1994_2005_NZ_5


[ Update this Record ]

Summary
Abstract: The structure and movement of the Victoria Upper Glacier, Victoria Valley, was investigated over several seasons. A network of 13 points on the glacier surface were marked with bamboo flags and the position recorded by GPS (over a three week period and re-measured the following season) to measure velocity and calculate surface strain. A tunnel at the terminus of the glacier was excavated over two seasons. Strain arrays and plumblines were installed to measure tunnel deformation and movement. The chemical and physical composition of ice samples from the tunnel was analysed. Three 5m ice cores were taken from Victoria Upper Lake and analysed. Ground penetrating radar (GPR) surveys were carried out to survey the morphology and structure of the apron of the Victoria Upper Glacier. 18 lines crossing the glacier-lake contact and 4 lines from the glacier surface were shot. Ice and sediment samples were collected for laboratory analysis. Two blocks of ice were sampled that spanned the contact between basal ice and meteoric origin ice at the terminus of the glacier and analyzed for a series of triaxial and cyclic loading analysis tests. A terrestrial laser scanner was used to undertake a 3D survey of the glacier margins to characterize the glacier apron, measure the glacier cliff and to calculate glacier cliff movement. 3D models of the glacier margin were created. A potentiometer was installed at the base of the glacier to characterise the pattern of basal ice deformation and identify flow heterogeneities.

Related URL
Link: VIEW PROJECT HOME PAGE


Parent DIF
This data set description is a member of a collection. The collection is described in
K064_1994_2005_NZ


Geographic Coverage
 N: -77.25 S: -77.35  E: 161.7  W: 161.3

Temporal Coverage
Start Date: 2002-12-30
Stop Date: 2003-01-21

Start Date: 2003-11-08
Stop Date: 2003-12-04

Start Date: 2004-11-19
Stop Date: 2004-12-14


Paleo_Temporal_Coverage
Chrono Unit:


Location Keywords
CONTINENT > ANTARCTICA
CONTINENT > ANTARCTICA > VICTORIA VALLEY
CONTINENT > ANTARCTICA > VICTORIA UPPER GLACIER
GEOGRAPHIC REGION > POLAR


Science Keywords
TERRESTRIAL HYDROSPHERE >GLACIERS/ICE SHEETS >GLACIERS    [Definition]
TERRESTRIAL HYDROSPHERE >GLACIERS/ICE SHEETS >GLACIER MASS BALANCE/ICE SHEET MASS BALANCE    [Definition]
TERRESTRIAL HYDROSPHERE >GLACIERS/ICE SHEETS >GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY    [Definition]
TERRESTRIAL HYDROSPHERE >GLACIERS/ICE SHEETS >GLACIER MOTION/ICE SHEET MOTION    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION
INLAND WATERS


Platform
GROUND-BASED OBSERVATIONS    [Information]


Instrument
GPS >Global Positioning System    [Information]
GPR >Ground Penetrating Radar    [Information]


Project
LTER >Long-Term Ecological Research    [Information]
PAGES >Past Global Changes, IGBP    [Information]
AMICS >Antarctic Ice-Sheet Dynamics and Climatic Change: Modelling and Ice Composition Studies    [Information]


Quality
Any existing samples that have not been used are stored in a MAF-registered transitional facilities in the Geography department at the University of Otago, New Zealand. All data is in the thesis and publication. Please contact the investigator for more information.


Keywords
dry based glaciers
structural glaciology
glacier movement
basal debris zone
Victoria Upper Lake


Data Set Progress
COMPLETE


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: SHULAMIT GORDON
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Personnel
SEAN FITZSIMONS
Role: INVESTIGATOR
Phone: +64 3 479 8786
Fax: +64 3 479 9037
Email: sjf at geography.otago.ac.nz
Contact Address:
Department of Geography
University of Otago
PO BOX 59
City: Dunedin
Country: New Zealand


CEISHA POIROT
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: c.poirot at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


SHULAMIT GORDON
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Publications/References
Fitzsimons, S. J., Webb, N., Mager, S., MacDonell, S., Lorrain, R., Samyn, D. (2008) Mechanisms of basal ice formation in polar glaciers: an evaluation of the apron entrainment model. Journal of Geophysical Research 113, F02010, doi: 10.1029/2006JF000698.

MacDonell, S. 2003. Cold-based glacier behaviour: Victoria Upper Glacier, Antarctica. Unpublished BSc (hons) dissertation, in Geography, at the University of Otago, Dunedin, New Zealand. 102 pp.

Samyn, D. 2003. Equifinality of basal ice facies at the base of an Antarctic cold glacier. MSc, Université Libre de Bruxelles, Belgium

Webb, N. 2003. Cold-based glacier apron morphology, structure, and composition : a multifaceted approach to testing basal ice formation by apron incorporation. Unpublished BSc (hons) dissertation, in Geography, at the University of Otago, Dunedin, New Zealand. 86 pp.

Creation and Review Dates
DIF Creation Date: 2005-09-22
Last DIF Revision Date: 2009-03-27


  Reformat as FGDC document



[ Update this Record ]