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Ground Penetrating Radar (GPR) surveys of a an ice rise on the southern McMurdo Ice Shelf, Antarctica.

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Ground Penetrating Radar (GPR) surveys of a an ice rise on the southern McMurdo Ice Shelf, Antarctica.
Description:
Abstract:
A topographic rise was observed on satellite imagery and ground traverses of the southern McMurdo Ice Shelf, part way between the SW tip of Black Island and the north shore of Minna Bluff was investigated in January 2005 using Ground Penetrating Radar (GPR) and GPS. Nine 50 MHz GPR profiles ranging from 1.5 to 2.5 km in length, were collected using a snowmobile-towed Sensors & Software Pulse Ekko 100 radar system. The GPR transects were configured in an obliquely crossing network, with accompanying topographic information provided by continuous kinematic GPS. Reflectors identified on the GPR profiles indicate that the ice shelf in this locality is grounded on an asymmetric crater-shaped bathymetric feature. Following conversion of two-way-travel-times (TWTT) to depth, it appears that the crater rims are ~50 m below the ice shelf surface while the crater floor is undulating at ~100 m depth. The presence of this pinning point and its morphology has implications for local ice shelf flow characteristics and for understanding the dynamics of the McMurdo Ice Shelf as a whole. Eight out of 44 ice movement poles established in the 02/03 and 03/04 season were resurveyed using differential GPS. This study builds on studies investigating the characteristics and processes of the southern McMurdo Ice Shelf.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Andrew, A.E. 2005. Physiography, flow characteristics and vulnerablity of the Southern McMurdo Ice shelf, Antarctica. MSc Thesis, University of Otago, New Zealand
Supplemental_Information:
REFERENCE: Horgan, H. Bannister, S. Naish, T. Wilson, G. Pyne, A. Clifford, A. Finnemore, M. ANDRILL site investigations/seismic surveys, McMurdo Ice Shelf, McMurdo Sound, Antarctica. Lower Hutt, New Zealand: Institute of Geological and Nuclear Sciences. 2003.[Institute of Geological and Nuclear Sciences science report 2003/05]
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050127
Ending_Date: 20050129
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 166.0042
East_Bounding_Coordinate: 166.2547
North_Bounding_Coordinate: -78.3572
South_Bounding_Coordinate: -78.3828
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY
Theme_Keyword: EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER THICKNESS/ICE SHEET THICKNESS
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER MOTION/ICE SHEET MOTION
Theme_Keyword: FIELD SURVEYS
Theme_Keyword: GPS > GLOBAL POSITIONING SYSTEM
Theme_Keyword: GPR > GROUND PENETRATING RADAR
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: LOCATION
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: GEOGRAPHIC REGION > POLAR
Place_Keyword: OCEAN > SOUTHERN OCEAN > ROSS SEA
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GARY S. WILSON
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Department of Geology
Address: University of Otago
Address: PO Box 56
City: Dunedin
Country: New Zealand
Contact_Voice_Telephone: +64 3 479 7509
Contact_Facsimile_Telephone: +64 3 479 7527
Contact_Electronic_Mail_Address: gary.wilson@stonebow.otago.ac.nz
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data is contained within 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
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Spatial_Reference_Information:
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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: K065_2004_2005_NZ
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://www.otago.ac.nz/geology/gsw.htm
Access_Instructions:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20051101
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
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