Main Article Content
field on the plane surface of the earth, an attempt has been made to approach
the sources by finding the values of the component on a plane at
a depth h below the surface, the plane being above the sources.
To this end a Green's Function for the wave equation, appropriate
for a semi — infinite space was determined. The integral obtained was
expanded into series suitable for numerical calculations.
The average values of the component on the earth plane were assumed
to satisfy a double series and the coefficients were determined by the least
Formulae were ultimately developed to calculate the values on a plane
at a depth h, in terms of average values on six concentric circles around
No Permission Required
Istituto Nazionale di Geofisica e Vulcanologia applies the Creative Commons Attribution License (CCAL) to all works we publish.
Under the CCAL, authors retain ownership of the copyright for their article, but authors allow anyone to download, reuse, reprint, modify, distribute, so long as the original authors and source are cited. No permission is required from the authors or the publishers.