Isotopic and TL Studies of Antarctic Ice Samples.

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF1700187895&userType=user&freeTextValue=Isotopic+and+TL+Studies+of+Antarctic+Ice+Samples.

Brief Description (Abstract):

Shallow ice core samples near Dakshin Gangotri Station Antarctica from the transition zone between the inland polar ice and shelf ice were studied for 2 Pb 3 Cs 88 O and Thermoluminescence(TL)of tripped dust in ice layers. The total B activity shows a small peak around 15 m but 13 Cs activity is below the detection limit in all the samples. The lead 210 activity indicates an average fallout in the range1 1 ? 03 dpm/L in various samples. The vertical profile of 88 O in 3 m ice core ranges between-17 2 to-21 5/o indicating a mean annual surface air temperature of 9 C at the time of deposition. Natural thermoluminescence levels of the trapped dust are smaller than the geological levels consistent with data obtained earlier.

Status: Completed

Purpose: Shallow ice core samples were collected near Dakshin Gangotri Station, from a location situated40 km inside the shelf, by the second Indian Expedition to Antarctica during January February1983. The samples were brought in frozen condition to Goa and then air lifted to Physical Research Laboratory, Ahmedabad in specially fabricated boxes (cooled by dry ice) for analysis. The ice samples were studied for natural and artificial radio activity, 3 Cs,2 Pb, Stable Isotope 8 8O and Thermolumincscence (TL) of trapped dust m ice layers. These data are compared with the findings insamples collected by the first Indian Expedition to Antarctica (Bhandan et al 1984)

Presentation Format: Documentdigital

Distribution Format: Cryosphere

Distribution Format Version: unknown

Supplemental Information:

TableDigital

Keyword(s): Earth Science-Cryosphere,

Place/Location(s): Dakshin Gangotri, Antarctic,

Project: Isotopic and TL Studies of Antarctic Ice Samples,

Topic Category(s): GeoScientific Information,

Date(s): 2020-08-24 (Creation),

Resource Contact(s):
1. Name : Dr. V N Nijampurkar
    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 : 1982-01-01
End Date   : 1983-12-31