The effect of integration robust regression analysis with inversion of transients for median gradient method at study of diatremes on Anabar shield
- 1 — Ph.D. leading engineer Institute of the Earth’s Crust Russian Academy of Sciences, Siberian Branch
- 2 — Ph.D., Dr.Sci. professor GeliosGroup
- 3 — leading geophysicist OJSC Diamonds of Anabar
- 4 — head of geophysical research OJSC Diamonds of Anabar
- 5 — leading geophysicist OJSC Diamonds of Anabar
- 6 — leading geophysicist Siberian Geophysical Research-and-Development Company LLC
- 7 — senior geophysicist Siberian Geophysical Research-and-Development Company LLC
Abstract
For diatremes searching on Anabar crystalline shield classical scheme with measuring in both in frequency and time domain has been used. Using original algorithms in combination with robust statistical methods allow to significantly increase efficiency information quality of the field material and detect transient during switch on current pulse. The robust regression procedure was used for removing curves dependence from transmitter-receiving setup. Sediments covered diatreme was discovered in the vicinity of etalon object. The diatreme, which was verified more recently by a borehole, was non manifested in the resistivity map. Inversion of areal data of transients was performed within five-layers one dimensional induced polarization model and sensitivity is observed up to 1200 m depth.
References
- Davydenko A.Y. Anomalies and features recognition in the gravitational and magnetic noisy fields. Geodynamics. Depth structure. Thermal fields of the Earth. Gephysical fields interpretation. Yekaterinburg: RAS, 2009.
- Davydenko Y.A. The development of software meagerement system for differentially normalized method of electromagnetic sounding: Research Paper ... PhD in eng. sc. 2005.
- Mia Hubert, Peter J. Rousseeuw and Stefan Van Aelst, High-Breakdown Robust Multivariate Methods // St ati stical Science. 2008 . V.23. N.1.
- Mia Hubert, Karlien Vanden Branden and Peter J. Rousseeuw; ROBPCA: A New Approach to Robust Principal Component Analysis // Technometrics, February2005. V.47 . N.1