Correction of seafloor magnetotelluric data for topographic effects during inversion

Journal of Geophysical Research: Solid Earth

Volumn 110, Issue 12, 2005, Pages 1-16

  Baba, Kiyoshi ^a,b   Chave, Alan D ^c  

^a JAPAN AGENCY FOR MARINE EARTH SCIENCE AND TECHNOLOGY   (Japan)

^b UNIVERSITY OF TOKYO   (Japan)

^c WOODS HOLE OCEANOGRAPHIC INSTITUTION   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DATA PROCESSING; MAGNETOTELLURIC METHOD; SEAFLOOR MAPPING;

EID: 31544438025     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/2004JB003463     Document Type: Article

References (30)

1. Baba, K., and N. Seama (2002), A new technique for the incorporation of seafloor topography in electromagnetic modeling, Geophys. J. Int., 150, 392-402.
2. Baba, K., A. D. Chave, R. L. Evans, G. Hirth, and R. L. Mackie (2005), Mantle dynamics beneath the East Pacific Rise at 17°S: Insights from the MELT EM data, J. Geophys. Res., doi:10.1029/2004JB003598, in press.
3. Bahr, K. (1988), Interpretation of the magnetotelluric impedance tensor: Regional induction and local telluric distortion, J. Geophys., 62, 119-127.
4. Berdichevsky, M. N., and V. I. Dmitriev (1976), Distortion of magnetic and electric fields by near-surface lateral inhomogeneities, Acta Geod. Geophys. Montanist. Acad. Sci. Hung., 11, 447-483.
5. Berdichevsky, M. N., L. L. Vanyan, and V. I. Dmitriev (1989), Methods used in the U.S.S.R. to reduce near-surface inhomogeneity effects on deep magnetotelluric sounding, Phys. Earth Planet. Inter., 53, 194-206.
6. Chave, A. D., and J. T. Smith (1994), On electric and magnetic galvanic distortion tensor decompositions, J. Geophys., Res., 99, 4669-4682.
7. Chave, A. D., and D. J. Thomson (2003), A bounded influence regression estimator based on the statistics of the hat matrix, J. Roy. Stat. Soc., Series C, (Appl. Stat.), 52, 307-322.
8. Chave, A. D., and D. J. Thomson (2004), Bounded influence estimation of magnetotelluric response functions, Geophys. J. Int., 157, 988-1006, doi:10.1111/j.1365-246X.2004.02203.x.
9. Constable, S. C., R. L. Parker, and C. G. Constable (1987), Occam's inversion: A practical algorithm for generating smooth models from electromagnetic sounding data, Geophysics, 52(3), 289-300.
10. Cormier, M. H., D. S. Scheirer, and K. C. Macdonald (1996), Evolution of the East Pacific Rise at 16°-19°S since 5 Ma: Bisection of overlapping spreading centers by new, rapidly propagating ridge segments, Mar. Geophys. Res., 18, 53-84.
11. Evans, R. L., et al. (1999), Asymmetric electrical structure in the mantle beneath the East Pacific Rise at 17°S, Science, 286, 752-756.
12. Filloux, J. H. (1977), Ocean-floor magnetotelluric sounding over North Central Pacific, Nature, 262, 297-301.
13. Groom, R. W., and K. Bahr (1992), Corrections for near surface effects: Decomposition of the magnetotelluric impedance tensor and scaling corrections for regional resistivities: A tutorial, Surv. Geophys., 13, 341-379.
14. Groom, R. W., and R. C. Bailey (1989), Decomposition of magnetotelluric impedance tensors in the presence of local three-dimensional galvanic distortion, J. Geophys. Res., 94, 1913-1925.
15. Heinson, G., and F. E. M. Lilley (1993), An application of thin-sheet electromagnetic modelling to the Tasman Sea, Phys. Earth Planet. Inter., 81, 231-251.
16. Jiracek, J. G. (1990), Near-surface and topographic distortions in electromagnetic induction, Surv. Geophys., 11, 163-203.
17. Koyama, T. (2002), A study of the electrical conductivity of the mantle by voltage measurements for submarine cables, Ph.D. thesis, Univ. Tokyo, Tokyo.
18. Lizarralde, D., A. Chave, G. Hirth, and A. Schultz (1995), Northeastern Pacific mantle conductivity profile from long-period magnetotelluric sounding using Hawaii-to-California submarine cable data, J. Geophys. Res., 100, 17,837-17,854.
19. Mackie, R. L., J. T. Smith, and T. R. Madden (1994), Three-dimensional electromagnetic modeling using finite difference equation: The magnetotelluric example, Radio Sci., 29(4), 923-935.
20. Nolasco, R., P. Tarits, J. H. Filloux, and A. D. Chave (1998), Magnetotelluric imaging of the Society Islands hotspot, J. Geophys. Res., 103, 30,287-30,309.
21. Oldenburg, D. W., K. P. Whittall, and R. L. Parker (1984), Inversion of ocean bottom magnetotelluric data revisited, J. Geophys. Res., 89, 1289-1833.
22. Scheirer, D. S., D. W. Forsyth, M. H. Cormier, and K. C. Macdonald (1998), Shipboard geophysical indications of asymmetry and melt production beneath the East Pacific Rise near the MELT experiment, Science, 280, 1221-1224.
23. Schwalenberg, K., and R. N. Edwards (2004), The effect of seafloor topography on magnetotelluric fields: An analytical formulation confirmed with numerical results, Geophys. J. Int., 159, 607-621, doi:10.1111/j.1365-246X.2004.02280.x.
24. Smith, W. H., and D. T. Sandwell (1994), Bathymetric prediction from dense altimetry and sparse shipboard bathymetry, J. Geophys. Res., 99, 21,803-21,824.
25. Utada, H., and H. Munekane (2000), On galvanic distortion of regional three-dimensional magnetotelluric impedances, Geophys. J. Int., 140, 385-398.
26. Vasseur, G., and P. Weidelt (1977), Bimodal electromagnetic induction in non-uniform thin sheets with an application to the northern Pyrenean induction anomaly, Geophys. J. R. Astron. Soc., 51, 669-690.
27. Wannamaker, P. E., G. W. Hohmann, and S. H. Ward (1984), Magnetotelluric responses of three-dimensional bodies in layered earths, Geophysics, 49(9), 1517-1533.
28. Wannamaker, P. E., J. R. Booker, A. G. Jones, A. D. Chave, J. H. Filloux, H. S. Waff, and L. K. Law (1989), Resistivity cross section through the Juan de Fuca subduction system and its tectonic implications, J. Geophys. Res., 94, 14,127-14,144.
29. Wessel, P., and W. H. F. Smith (1998), New, improved version of the Generic Mapping Tools released, Eos Trans. AGU, 79, 579.
30. White, S. N., A. D. Chave, and J. H. Filloux (1997), A look at galvanic distortion in the Tasman Sea and the Juan de Fuca plate, J. Geomagn. Geoelectr., 49(11,12), 1373-1386.