Investigations of the accretion of ice at the base of dry based glaciers in the McMurdo Dry Valleys (Suess, Canada, LaCroix, Taylor, Lower Wright, Clark and Upper Victoria glaciers)

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Investigations of the accretion of ice at the base of dry based glaciers in the McMurdo Dry Valleys (Suess, Canada, LaCroix, Taylor, Lower Wright, Clark and Upper Victoria glaciers)
Description:
Abstract:
The process of ice accretion at the base of dry polar glaciers in the Dry Valleys of southern Victoria Land was examined. The Suess, Canada, LaCroix and Taylor glacier in the Taylor Valley, the Lower Wright and the Clark glaciers in the Wright Valley and the Upper Victoria glacier in the Victoria Valley were all sampled. Five glaciers terminated in or near lakes, and the other two terminated high on the valley side but were investigated as examples of glaciers that have not interacted with lakes. There were five main objectives of the study including: 1) to determine the base cation and chloride concentration of white glacier ice, basal ice and lake ice from glacier margins, 2) to determine the ion exchange capacity of sediment samples from the terminus of glaciers, 3) to determine the origin of basal ice in dry based alpine glaciers, 4) to determine whether lake ice/water is accreted to the base of dry based glaciers and 5) to determine whether lake ice occurs in thrust block moraines which form at the glacier terminus. At each glacier margin basal zone ice and white glacier ice was sampled at the glacier terminus with sampling sites sketched and photographed. Ice was also sampled from ice-cored thrust block moraines with the area sketch and photographed. Samples of lake ice and water were taken near the terminus of each glacier. Water samples from below the frozen surface and moat water were sampled from lakes including Lake Popplewell, Lake Chad, Lake Fryxell, Lake Hoare, Lake Bonny, Lake Brownworth and Upper Victoria Lake. Conductivity was measured from basal ice, apron ice and lake moat water as an indicator of ion concentration. Sediment was sampled to investigate the rate and influence of ion exchange on glacier melt water. Base cation and chloride concentration and ion exchange analyses were conducted on melt water samples.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Hooker, B. 1998. Chemical signatures of clear basal ice facies at the margins of dry-based glaciers, South Victoria Land, Antarctica. Unpublished MSc thesis, in Geography, at the University of Otago, Dunedin, New Zealand. 96 p Hooker, B.L. Fitzsimons, S.J. Morgan, R.K. Chemical characteristics and origin of clear basal ice facies in dry-based glaciers, south Victoria Land, Antarctica. Global and planetary change 22: 29-38, 1999.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19960105
Ending_Date: 19960129
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 161.0
East_Bounding_Coordinate: 163.5
North_Bounding_Coordinate: -77.25
South_Bounding_Coordinate: -77.75
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > GLACIERS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > GLACIER FACIES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > GLACIER MOTION/ICE SHEET MOTION
Theme_Keyword: GROUND-BASED OBSERVATIONS
Theme_Keyword: Accretion
Theme_Keyword: Moraines
Theme_Keyword: Glacier Terminus
Theme_Keyword: Basal Ice
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: INLAND WATERS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: CONTINENT > ANTARCTICA > VICTORIA VALLEY
Place_Keyword: CONTINENT > ANTARCTICA > UPPER VICTORIA VALLEY
Place_Keyword: CONTINENT > ANTARCTICA > CLARK GLACIER
Place_Keyword: CONTINENT > ANTARCTICA > WRIGHT VALLEY
Place_Keyword: CONTINENT > ANTARCTICA > LOWER WRIGHT GLACIER
Place_Keyword: CONTINENT > ANTARCTICA > TAYLOR VALLEY
Place_Keyword: CONTINENT > ANTARCTICA > TAYLOR GLACIER
Place_Keyword: CONTINENT > ANTARCTICA > LACROIX GLACIER
Place_Keyword: CONTINENT > ANTARCTICA > CANADA GLACIER
Place_Keyword: CONTINENT > ANTARCTICA > SUESS GLACIER
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: SEAN FITZSIMONS
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Department of Geography
Address: University of Otago
Address: PO BOX 59
City: Dunedin
Country: New Zealand
Contact_Voice_Telephone: +64 3 479 8786
Contact_Facsimile_Telephone: +64 3 479 9037
Contact_Electronic_Mail_Address: sjf@geography.otago.ac.nz
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
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.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
Back to Top
Spatial_Reference_Information:
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NZ/NZAI/ANZ > Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand
Contact_Person: SHULAMIT GORDON
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Resource_Description: K064_1995_1996_NZ_1
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.antarcticanz.govt.nz/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://glaciers.otago.ac.nz/
Access_Instructions:
Fees: Not Available
Back to Top
Metadata_Reference_Information:
Metadata_Date: 20050922
Metadata_Review_Date: 20090327
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: CEISHA POIROT
Contact_Person_Primary:
Contact_Person: SHULAMIT GORDON
Contact_Position: DIF AUTHOR
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: c.poirot@antarcticanz.govt.nz
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Back to Top
[ Update this Record ]


Link to Web Site