Interesting Features of Infrasonic Pressure Variations at Maitri, Antarctica.

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF-2021454087&userType=user&freeTextValue=Interesting+Features+of+Infrasonic+Pressure+Variations+at+Maitri%2C+Antarctica.

Brief Description (Abstract):

A microbarograph, set up by NPL, was used to study the features of the infrasonic pressure variations at Maitri, Antarctica. A few interesting features are described and possible linkage of infrasonic pressure variations with temperature changes in the stratosphere is suggested.

Status: Completed

Purpose: The tenth Indian Antarctic expedition (1990-92) carried out various experiments with ground based instruments at Maitri (70 46S, 11 44E). One of the ground based instruments was a microbarograph set up by National Physical Laboratory primarily to study the coupling between different layers of the atmosphere. The microbarograph is a condenser microphone type having a frequency response 0.001 to 2 Hz. This is the first time that microbarograph data for Antarctica was available for one full year. Based on limited data of the earlier expeditions, some features of the infrasonic pressure variations at Antarctica have already been reported (Venkatachari et al.,1984 1987). In this we are reporting the general features of infrasonics that are observed at Antarctica with special emphasis on wave motions observed there, especially in the month of October 1991, which may bear indirect evidence of temperature changes in the stratosphere.

Presentation Format: Documentdigital

Distribution Format: unknown

Distribution Format Version: unknown

Supplemental Information:

TableDigital

Keyword(s): Earth Science-Atmosphere,

Place/Location(s): Maitri, Antarctic,

Project: Interesting Features of Infrasonic Pressure Variations at Maitri,

Topic Category(s): ClimatologyMeteorologyAtmosphere,

Date(s): 2020-09-11 (Creation),

Resource Contact(s):
1. Name : Dr. A K Hanjura
    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 : 1990-01-01
End Date   : 1991-12-31