New approaches to estimation of magnetotelluric parameters

Technical Report · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6864411· OSTI ID:6864411

Egbert, G D ^[1]; Booker, J R ^[2]

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1. Oregon State Univ., Corvallis, OR (USA). Coll. of Oceanography
2. Washington Univ., Seattle, WA (USA)

This document proposed the development and application of some new statistical techniques for improving the collection and analysis of wide-band magnetotelluric (MT) data. The principle goal of our work is to develop and implement fully automatic single station and remote reference impedance estimation schemes which are robust, unbiased and statistically efficient. The initial proposal suggested several extensions to the regression M-estimates to better allow for non-stationary and non-Gaussian noise in both electric and magnetic field channels (measured at one or more simultaneous stations). A second goal of the proposal was to develop formal, reliable procedures for estimating undistorted 2-d strike directions and to develop statistics for assessing the validity of the 2-d assumption that are unaffected by near surface static distortion effects. To test and validate the methods, working with data selected from a series of over 200 wide-band MT sites was proposed. For the current budget period, setting up a data base, and completing development and initial testing of the single station and remote reference methods outlined in the proposal is suggested. 8 refs., 13 figs.

• Research Organization: Oregon State Univ., Corvallis, OR (USA). Coll. of Oceanography
• Sponsoring Organization: DOE/ER
• DOE Contract Number: FG06-89ER14057
• OSTI ID: 6864411
• Report Number(s): DOE/ER/14057-1; ON: DE90016188
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
AUTOMATION
BUDGETS
COMPARATIVE EVALUATIONS
COMPUTER CODES
COMPUTER OUTPUT DEVICES
COMPUTER-GRAPHICS DEVICES
CONTROL
DATA ACQUISITION SYSTEMS
DATA PROCESSING
DISPLAY DEVICES
DOCUMENT TYPES
ELECTRIC FIELDS
ELECTRICAL SURVEYS
ELECTROMAGNETIC SURVEYS
ERRORS
FOURIER TRANSFORMATION
FREQUENCY ANALYSIS
FUNCTIONS
GEOPHYSICAL SURVEYS
INTEGRAL TRANSFORMATIONS
MAGNETIC FIELDS
MAGNETOTELLURIC SURVEYS
MATHEMATICAL MODELS
NOISE
PERFORMANCE TESTING
PLANNING
PROBABILISTIC ESTIMATION
PROCESSING
PROGRESS REPORT
PULSES
REMOTE CONTROL
RESPONSE FUNCTIONS
STATISTICAL MODELS
SURVEYS
TESTING
TRANSFER FUNCTIONS
TRANSFORMATIONS