Indira Mount - An Underwater Mountain in the Antarctic Ocean.

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF727169882&userType=user&freeTextValue=Indira+Mount+-+An+Underwater+Mountain+in+the+Antarctic+Ocean.

Brief Description (Abstract):

A major topographic high on the seabed at 53? 39.79' S and 47? 55.82' E was discovered during the First Indian Expedition to Antarctica.. This has been named. "Indira Mount". The mount rises from a depth of about 4500 m to about 1200 m and has a number of peaks. One of these peaks rises to within 880 m of the sea surface. The apparent width of the mount at the base appears to be about185 km and at the summit it is about 134 km. The mount is associated with a composite magnetic anomaly of the order of 1000gammas. The multiple peaks and high magnetic anomalies indicate that the mount is largely composed of volcanic rocks and perhapsthe pile of lava did not reach the surface. Magnetic data indicate heterogeny in the magnetic property of the mount perhaps due to more than one episode of volcanic activity.

Status: Completed

Purpose: The First Indian Expedition to Antarctica had carried out extensive echosounding from the ship MVPolar Circle covering more than 17000 line kilometres. The data are still being analysed. However,continuous monitoring of the echosounding records during the expedition led to the identification of areasof immediate interest and the data for these regions have been analysed on a priority basis. The expedition daring its voyage from Mauritius to Antarctica recorded a topographic high which has not been previously reported (British Admiralty Chart No. 3171 and the Geological Geophysical Atlas of the Indian Ocean,1975). The expedition team named this as Indira Mount after Shrimati Indira Gandhi, the Prime Minister of India.

Presentation Format: Documentdigital

Distribution Format: Land Surface

Distribution Format Version: unknown

Supplemental Information:

TableDigital

Keyword(s): Earth Science-Land Surface,

Place/Location(s): Southern Ocean, Antarctic,

Project: Indira Mount An Underwater Mountain in the Antarctic Ocean,

Topic Category(s): GeoScientific Information,

Date(s): 2020-08-21 (Creation),

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

Extent:
Start Date : 1981-01-01
End Date   : 1982-12-31