FIVE-COMPONENT MTS MEASUREMENTS FOR ESTIMATION THE PARAMETERS OF 2D ANOMALOUS BODIES SITUATED OUTSIDE THE PROFILE OF MEASUREMENTS

Abstract

During regional profile investigations and recognizance survey at exploration area with MT and AMT
methods usually vertical magnetic component (Hz)
of natural electromagnetic (EM) field is measured.
The obtained by Hz data permits together with MT
and AMT information to have information about
MVP method data. Induction vectors, calculated on
the base of this data give the possibility to discover
the position of prospective anomalous bodies (in apparent resistivity). But the important questions that
are waiting for the answer are the parameters of
anomalous bodieslike depth to center (or to the top),
size and total conductivity of the section of the body.
The relative conductance of the section (G) can be
estimated using the maxima of the anomalous frequency characteristic. Deeping the centre of the
anomalous body as well as bigger distance from the
observation profile brings the similar results – reducing the amplitude of anomaly but keep fm the
same. Some graphical and analytical relation can be
proposed to separately estimate G, as well as distance the body epicenter from profile (L) as well as
depth to the top of the body (H).