Electrical structure beneath the northern MELT line on the East Pacific Rise at 15°45′S

Geophysical Research Letters

Volumn 33, Issue 22, 2006, Pages

  Baba, Kiyoshi ^a   Tarits, Pascal ^a,b   Chave, Alan D ^c   Evans, Rob L ^c   Hirth, Greg ^c   Mackie, Randall L ^d  

^a UNIVERSITY OF TOKYO   (Japan)

^b CNRS   (France)

^c WOODS HOLE OCEANOGRAPHIC INSTITUTION   (United States)

^d GSY USA Inc   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRIC CONDUCTIVITY; ELECTROMAGNETIC FIELDS; IMAGING TECHNIQUES; PARAMAGNETIC RESONANCE; STRUCTURAL GEOLOGY; TOMOGRAPHY;

ELECTRICAL STRUCTURE; MANTLE ELECTROMAGNETIC AND TOMOGRAPHY (MELT); SEAFLOOR MAGNETOTELLURIC DATA; UPPER MANTLE;

GEOMAGNETISM;

ELECTRICAL CONDUCTIVITY; ELECTRICAL PROPERTY; MAGNETOTELLURIC METHOD; MANTLE STRUCTURE; SEAFLOOR; UPPER MANTLE;

EAST PACIFIC RISE; PACIFIC OCEAN;

EID: 34548563835     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2006GL027528     Document Type: Article

References (19)

1. Baba, K., and A. D. Chave (2005), Correction of seafloor magnetotelluric data for topographic effects during inversion, J. Geophys. Res., 110, B12105, doi:10.1029/2004JB003463.
2. Baba, K., and N. Seama (2002), A new technique for the incorporation of seafloor topography in electromagnetic modelling, Geophys. J. Int., 150, 392-402.
3. Baba, K., A. D. Chave, R. L. Evans, G. Hirth, and R. L. Mackie (2006), Mantle dynamics beneath the East Pacific Rise at 17°S: Insights from the Mantle Electromagnetic and Tomography (MELT) experiment, J. Geophys. Res., III, B02101, doi:10.1029/2004JB003598.
4. Canales, J. P., R. S. Detrick, S. Bazin, A. J. Harding, and J. A. Orcutt (1998), Off-axis crustal thickness across and along the East Pacific Rise within the MELT area, Science, 280, 1218-1221.
5. Chave, A., 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.
6. Dunn, R. A., and D. W. Forsyth (2003), Imaging the transition between the region of mantle melt generation and the crustal magma chamber beneath the southern East Pacific Rise with short-period Love waves, J. Geophys. Res., 108(B7), 2352, doi:10.1029/2002JB002217.
7. Evans, R. L., et al. (1999), Asymmetric electrical structure in the mantle beneath the East Pacific Rise at 17°S, Science, 286, 752-756.
8. Evans, R. L., G. Hirth, K. Baba, D. Forsyth, A. Chave, and R. Mackie (2005), Geophysical evidence from the MELT area for compositional controls on oceanic plates, Nature, 437, 249-252, doi:10.1038/ nature04014.
9. Hirth, G., and D. L. Kohlstedt (1996), Water in the oceanic upper mantle: Implications for rheology, melt extraction and the evolution of the lithosphere, Earth Planet. Sci. Lett., 144, 93-108.
10. Hooft, E. E. E., R. S. Detrick, and G. M. Kent (1997), Seismic structure and indicators of magma budget along the Southern East Pacific Rise, J. Geophys. Res., 102(B12), 27,319-27,340.
11. Karato, S. (1990), The role of hydrogen in the electrical conductivity of the upper mantle, Nature, 347, 272-273.
12. Kurz, M. D., M. Moreira, J. Curtice, D. E. Lott III, J. J. Mahoney, and J. M. Simon (2005), Correlated helium, neon, and melt production on the super-fast spreading East Pacific Rise near 17°S, Earth Planet. Sci. Lett., 232, 125-142, doi:10.1016/j.epsl.2005.01.005.
13. 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.
14. MELT Seismic Team (1998), Imaging deep seismic structure beneath the mid-ocean ridge: The MELT experiment, Science, 280, 1215-1218.
15. Rodi, W., and R. L. Mackie (2001), Nonlinear conjugate gradients algorithm for 2-D magnetotelluric inversion, Geophysics, 66, 174-187.
16. Wang, D., M, Mookherjee, Y. Xu, and S.-I. Karato (2006), The effect of hydrogen on the electrical conductivity in olivine, Nature, in press.
17. Wessel, P., and W. H. F. Smith (1998), New, improved version of the generic mapping tools released, Eos Trans. AGU, 79, 579.
18. Xu, Y., T. J. Shankland, and B. T. Poe (2000), Laboratory-based electrical conductivity in the Earth's mantle, J. Geophys. Res., 105, 27,865-27,875.
19. Yoshino, T., T. Matsuzaki, and T. Katsura (2006), Electrical conductivity of hydrous single crystal olivine: Assessment of water in the upper mantle, Nature, in press.