Ice Thickness and Subglacial Topography Studies by Ground Penetrating Radar During the XX Indian Antarctic Expedition.

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF-353493190&userType=user&freeTextValue=Geographical+Control+in+East+Antarctica.

Brief Description (Abstract):

Ground Penetrating Radar (GPR) has proved to be a versatile tool for mapping of glacial ice thickness and related studies over the years. During the XX Indian Antarctic Expedition pulse EKKO IV GPR operating at center frequency of 12.5 MHz was used to measure the ice thickness of polar ice sheet to the south of Schirmarcher Oasis, Queen Maund Land in Eastern Antarctica. The GPR profiling of 8.3 km was carried out between Vetehiea and Tallaksenvardan nunataks. The general bedrock topography is gently undulating, 1520 m wide depression in the bed rock is marked by a sudden break in slope at 4700 m and 6220 m due south of Vetehiea, where the thickness of ice is more than 440 m, indicating a deep graben structure in the bed rock.

Status: Completed

Purpose: The major objectives of this study was to map the subglacial topography beneath the polar ice, and decipher the tectonic setup of the region, which could prove useful in selection of a suitable location for ice core drilling. Results of GPR survey conducted to estimate the shelf thickness and snow depth over the sunken Daskshin Gangotri station established in 1983 are also discussed.

Presentation Format: Documentdigital

Distribution Format: unknown

Distribution Format Version: unknown

Supplemental Information:

TableDigital

Keyword(s): Earth Science-Solid Earth,

Place/Location(s): Schirmacher Oasis, Antarctic,

Project: Ice Thickness and Subglacial Topography Studies by Ground Penetrating Radar During the XX Indian Antarctic Expedition,

Topic Category(s): GeoScientific Information,

Date(s): 2020-09-30 (Creation),

Resource Contact(s):
1. Name : Dr. J T Gergan
    Role : PrincipalInvestigator
    Phone : 8322525515
    E-Mail : ictd [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Distributor Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : Distributor
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Metadata Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : PointOfContact
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Extent:
Start Date : 2000-01-01
End Date   : 2001-12-31