Gravity Survey (Helicopter Supported) between Schirmacher Oasis and Wohlthat Mountains, Dronning Maud Land, Antarctica.

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF-1822006434&userType=user&freeTextValue=Gravity+Survey+%28Helicopter+Supported%29+between+Schirmacher+Oasis+and+Wohlthat+Mountains%2C+Dronning+Maud+Land%2C+Antarctica.

Brief Description (Abstract):

The helicopter-borne magnetic survey conducted between the Schirmacher Oasis (SO) and the Wohlthat Mountains (WM) during the Seventh Indian Antarctic Expedition (IAE) revealed a number of interesting anomaly zones in the region. To study some of these features in detail, a helicopter supported gravity survey was conducted during the Ninth IAE. Details of the logistics planning, data acquisition, processing and interpretation relating to this survey are described.

Status: Completed

Purpose: The need to conduct gravity survey around SO and in the region between SO and WM was realized when a number of interesting features were revealed by the helicopter-borne magnetic survey done during the seventh IAE. While the nunataks between the SO and WM showed high magnetic anomalies, the SO was found to be associated with a magnetic low (Fig. 1). Also a strong magnetic high was observed just northwest of SO. In order to further study this strong magnetic anomaly of more than 600 nT associated with the SO, a gravity survey was carried out during the Ninth IAE and measurements were taken along 4 profiles in the vicinity of SO. One of these profiles was extended upto Humboldt mountains while another (fifth profile) was taken between the eastern margin of SO and the foot-hills of the Gruber massif. After the standard data reduction and processing, the observed gravity values were interpreted considering available geological and geophysical information in the region.

Presentation Format: Documentdigital

Distribution Format: unknown

Distribution Format Version: unknown

Supplemental Information:

TableDigital

Keyword(s): Earth Science-Land Surface,

Place/Location(s): Queen Maud Land, Antarctic,

Project: Gravity Survey (Helicopter Supported) between Schirmacher Oasis and Wohlthat Mountains,

Topic Category(s): GeoScientific Information,

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

Resource Contact(s):
1. Name : Dr. S K Verma
    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 : 1989-01-01
End Date   : 1990-12-31