+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

New equipment and processing for magnetotelluric remote reference observations

New equipment and processing for magnetotelluric remote reference observations

Geophysical Journal International 132(3): 535-548

Robust estimates of magnetotelluric and geomagnetic response functions are determined using the coherency and expected uniformity of the magnetic source field as quality criteria. The method is applied on data sets of three simultaneously recording sites. For the data acquisition we used a new generation of geophysical equipment (S.P.A.M. MkIII), which comprises novel concepts of parallel computing and networked, digital data transmission. The data-processing results show that the amount of noise on the horizontal components of the magnetic field varies considerably in time, between sites and over the frequency range. The removal of such contaminated data beforehand is essential for most data-processing schemes, as the magnetic channels are usually assumed to be free of noise. The standard remote reference method is aimed at reducing bias in response function estimates. However, this does not necessarily improve their precision as our results clearly show. With our method, on the other hand, we can filter out source field irregularities, thereby providing suitable working conditions for the robust algorithm, and eventually obtain considerably improved results. Contrary to previous concepts, we suggest rejecting as much data as feasible in order to concentrate on the remaining parts of high-quality observations.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 019522846

Download citation: RISBibTeXText

DOI: 10.1046/j.1365-246x.1998.00440.x

Related references

New processing for magnetotelluric remote reference observations. Eos, Transactions, American Geophysical Union 78(46, Suppl, 1997

Magnetotelluric system for remote reference operation and in-field data processing. Geologisches Jahrbuch Reihe E: Geophysik, 1982

How remote can the far remote reference site for magnetotelluric measurements be?. Journal of Geophysical Research: Solid Earth 107(B6): 2105, 2002

Application of remote-reference magnetotelluric sounding. Shiyou Diqiu Wuli Kantan = Oil Geophysical Prospecting: , Pages 594-599. 1990., 1990

Magnetotelluric sounding by the remote reference method. Shiyou Diqiu Wuli Kantan = Oil Geophysical Prospecting 1983(3): illus, 1983

Remote reference magnetotelluric impedance estimation of wideband data using hybrid algorithm. Journal of Geophysical Research: Solid Earth 111(B11), 2006

Magnetotelluric measurements at the SE flank of the Stavelot-Venn Anticline using the remote reference technique. Neues Jahrbuch fuer Geologie und Palaeontologie Abhandlungen, 1985

Remote-reference magnetotellurics; equipment and procedures. Geophysical Prospecting 31(1): 149-170, 1983

In-depth processing of magnetotelluric data and improving the reliability of field observations. Pages 125-126:, 1990

Observations on current dairy processing equipment designs and processing trends in dairy industry. Indian Dairyman 50(6): 7-11, 1998

Robust, remote reference, and jackknife MT data processing. Abstracts - Workshop on Electromagnetic Induction in the Earth and Moon 9: 116, 1988

Local and global processing: observations from a remote culture. Cognition 108(3): 702-709, 2008

Innovation in nursing equipment. Equipment to be worn after PTCD--with special reference to safety and fixation of the drainage equipment for walking. Nursing Technique 26(14): 1899-1901, 1980

Equipment for processing organic wastes A report of available machinery which can be used in various stages of large-scale, mechanized composting as well as equipment for processing wastes for direct return to the soil. 1960

I. Further Observations on Fracture of the Neck of the Femur in Childhood, with Especial Reference to its Diagnosis and to its more Remote Results. Annals of Surgery 25(6): 673-686, 1897