An objective real-time data adaptive technique for efficient model resolution improvement in magnetotelluric studies.
A.G. Jones and J.H. Foster
A scheme is described whereby the error associated
with the least well-resolved model eigenparameter in a
magnetotelluric survey is reduced by focusing data collection
on a specific range of frequencies. The scheme
also gives a quantitative estimate of the statistical error
associated with the least well-resolved model parameter,
and thus provides an objective criterion to the operator
regarding when to cease data collection at that location.
The scheme is based on a linearization of the relationship
between variations in the model parameters and
the changes thereby introduced to the computed response
function. The matrix of partial derivatives describing
this linearization is factored orthogonally by a
singular value decomposition.
The scheme is illustrated by applying it to a synthetic
data set. Also, the algorithm has been coded in Basic on
an HP9845 and employed in the field. An example is
given of its field operation in a sedimentary basin environment.
Geophysics, 51, 90-97, 1986.
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Alan G Jones / 07 October 2007 /