Accession Number : AD0645954

Title :   MAGNETOHYDRODYNAMICS OF THE EARTH'S MAGNETIC FIELD.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA INST OF TECH PASADENA DIV OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Venezian,Giulio

Report Date : JAN 1967

Pagination or Media Count : 31

Abstract : A survey of observational and theoretical work pertaining to the origin of planetary magnetic fields is given with special emphasis on the dynamo theory which attempts to explain these fields as arising from magnetohydrodynamic regenerative action. Some points are raised regarding what a satisfactory theory should contain. It is suggested that reversals may occur without a drastic change in the internal flow. A method of using one model of dynamo action to obtain information about the structure of the flow in the core of the earth is proposed.

Descriptors :   (*EARTH(PLANET), MAGNETIC FIELDS), (*MAGNETOHYDRODYNAMICS, EARTH(PLANET)), GEOMAGNETISM, FIELD THEORY, MAGNETIC MOMENTS, GRAVITY, EQUATIONS OF STATE, SEISMOLOGY

Subject Categories : Geomagnetism
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE