A geoelectrical section across the Andaman arc sea region, northeast Indian ocean by using ocean bottom magnetometers

Journal of the Geological Society of India

Volumn 55, Issue 1, 2000, Pages 47-64

  Subba Rao, P B V ^a   Singh, B P ^a   Gawali, P B ^a  

^a INDIAN INSTITUTE OF GEOMAGNETISM   (India)

Author keywords

Andaman Sea; Bay of Bengal; Geophysics; Low resistivity layer; Ocean bottom magnetometer investigations; Oceanic crustal structure; Partial subduction

Indexed keywords

ELECTRICAL RESISTIVITY; MAGNETIC SURVEY; OCEANIC CRUST; SUBDUCTION ZONE;

BAY OF BENGAL;

EID: 0034113619     PISSN: 00167622     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (41)

1. AGARWAL, A.K. and WEAVER, J.T. (1989). Regional electromagnetic induction around the Indian peninsula and Srilanka: a 3D numerical model study using thin sheet approximation. Phys. Earth. Planet. Int, v.54, pp.320-331.
2. CHAVE, A.D., THOMSON, D.J. and ANDER, M.E. (1987). On the robust estimation of power spectra. Coherences and transfer functions. Jour. Geophy. Res., v.92, pp.633-648.
3. CLOSS, H., NARIAN, H. and GARD, S.C. (1974). In: C.A. Burke and C.L.Drake, (Eds.), Continental Margins of India. Springer, New York, pp.629-639,
4. COCHRANE, N.A. and HYNDMAN, R.D., (1970). A new analysis of geomagnetic depth sounding from western Canada. Candian Jour. Earth. Sci, v.7, pp.1208-1218.
5. Cox, C., FILLOUX, J. and LARSEN, J. (1970). Electromagnetic studies of ocean currents and electrical conductivity below the ocean floor. In: The Sea, v.4, Wiley, New York, pp.637-693,.
6. Cox, C., FILLOUX, J., D.I. GOUGH, LARSEN, J., POEHLS, K., HERZEN, R.V. and WINTER, R. (1980). Atlantic lithosphere sounding. Supp. Jour. Geomag. Geoelect, v.9, pp. 13-32.
7. CURRAY J.R. (1991). Possible greenschist metamorphism at the base of a 22 km sedimentary section. Bay of Bengal, Geology, v.19, pp. 1097-1100.
8. CURRAY.J., MOORE, D., LAWVER, L., EMMEL, F., RAITT, R., HENRY, M. and KIECKHEFER, R. (1979). Tectonics of Andaman Sea and Burma. Am. Assoc. Pet. Geol. Mem., v.29, pp.189-198.
9. CURRAY J.R., EMMEL, F.J., MOORE, D.G. and RAITT, R.W. (1982). Structure, tectonics and geological history of the northeastern Indian ocean, In: The Ocean Basin and Margins, vol. 6: The Indian Ocean, A.E.M. Nairn and F.G. Stehli, (Eds.), Plenum Press, New York, pp. 399-450.
10. DASGUPTA, S. and MUKHOPADHYAY, M. (1993). Seismicity and plate deformation below the Andaman arc, northeast Indian ocean, Tectonophysics, v.225, pp.529-542.
11. DASGUPTA, S. and MUKHOPADHYAY, M. (1997). Aseismicity of the Andaman subduction zone and recent volcanism. Jour. Geol. Soc. India., v.49, pp.513-521.
12. DASGUPTA, S., MUKHOPADHYAY, M. and NANDY, D.R., (1990). Magmatism and tectonic setting in the Burmese-Andaman arc. Indian Jour. Geol., v.62, pp.117-141.
13. EGBERT, G.D. and BOOKER, J.R., (1986). Robust estimation of geomagnetic transfer functions. Geophys. Jour. Roy. Astr. Soc., v.87, pp. 173-194.
14. EMSLAB Group (1989). The EMSLAB electromagnetic sounding experiment (14 papers), Jour. Geophys. Res., v.94, pp. 14093-14283.
15. FILLOUX, J.H. (1977). Ocean-floor magnetotelluric sounding over north-central Pacific. Nature, v.269, pp.297-301.
16. FILLOUX, J.H. (1983). Seafloor magnetotelluric soundings in the Mariana Island arc area. In: D.E. Hayes (Ed.), The Tectonic and Geological Evolution of Southeast Asian Seas and Islands: Part 2, Geophys. Monogr. Ser. 27, pp.255-265, Am. Geophys. Union., Washington, D.C.
17. GOPALA RAO, D. et al. (1994). Analysis of multichannel seismic reflection and magnetic data along 13° N latitude across the Bay of Bengal. Mar. Geophy. Res, v.16, pp.225 - 236.
18. GOPALA RAO, D., KRISHNA, K.S. and SAR, D. (1997). Crustal evolution and sedimentation history of the Bay of Bengal since the Cretaceous. Jour. Geophys. Res., v.102, pp. 17,747 - 17,768.
19. GOSLIN, J. and PATRAIT, P. (1984). Absolute and relative plate motions and hypothesis on the five aseismic ridges in the Indian Ocean. Tectonophysics, v.101, pp.221-244.
20. HALDER, D., LASKAR, T., BANDYOPADHYAY, P.C., SARKAR, N.K. and BISWAS, J.K. (1992). Volcanic eruption of the Barren Island volcano, Andaman Sea. Jour. Geol. Soc. India, v.39, pp.411-419.
21. JONES, A.G. (1993). Electromagnetic images of modem and ancient subduction zones. Tectonophysics, v.219, pp.29-45.
22. JOZWAIK, W. and BEAMISH, D. (1986). A thin sheet model of electromagnetic induction in northern England and southern Scotland. Geophys. Jour. Roy. Astron. Soc., v.85, pp.629-643.
23. LAW, L.K. and GREENHOUSE, J.P. (1981). Geomagnetic variation sounding of the asthenosphere beneath the Juan de Fuca Ridge. Jour. Geophy. Res., v.86, pp.967-978.
24. MUKHOPADHYAY, M. and KRISHNA, M.B.R., (1995). Gravity anomalies and deep structure of the Ninetyeast Ridge North of Equator, Eastern Indian Ocean - A hot spot trace model. Mar. Geophy. Res., 17,201-216.
25. NHO, (1977). Bathymetry map of Bay of Bengal. Published by Superintendent, Naval Hydrographic Office, Dehradun, India.
26. PETER, G., WEEKS, L.A. and BURNS, R.E. (1966). A reconnaissance geophysical survey in the Andaman Sea and across the Andaman-Nicobar Island Arc. Jour. Geophys. Res., v.71, pp.495-509.
27. POEHLS, K.A. and VON HERZEN, K.P. (1976). Electrical resistivity structure beneath the north-west Atlantic ocean. Geophys. Jour. Roy. Astron. Soc, v.47, pp.331-347.
28. RAMANA, M.V. et al. (1994). Mesozoic anomalies in the Bay of Bengal. Earth Planet. Sci. Lett., v.121, pp.469-475.
29. RODOLFO, K.S., (1969). Bathymetry and marine geology of the Andaman basin and tectonic implications for SE Asia, Am. Assoc. Pet. Geol. Bull., v.52, pp.2422-2437.
30. ROYER, J.Y. and SANDWELL, D.T., (1989). Evolution of the eastern Indian Ocean since the late Cretaceous from Geosat altimetry. Jour. Geophy. Res., v.94, pp.13755 - 13782.
31. SCHMUCKER, U. (1970). Anomalies of geomagnetic variations in the southwestern United states. Bull. Scrips. Inst. Oceanogr., v.13, pp. 1-165.
32. SCHMUCKER, U. (1971). Interpretation of induction anomalies above non-uniform surface layers, Geophysics, v.36, pp. 156-165.
33. SCHMUCKER, U. (1995). Electromagnetic induction in thin sheets: integral equations and model studies in two dimensions, Geophys. Jour. Int., v.121, pp.173-190.
34. SEGAWA, J., HAMANO, Y., UTADA, H. and TOH, H. (1986). A seafloor magnetometer model OBM-S4. Jour. Geod. Soc. Japan, v.32, pp.248-273.
35. SHANKLAND, T.J. and WAFF, H.S., (1977). Partial melting and conductivity anomalies in the upper mantle, Jour. Geophys. Res., v.82, pp.5409-5417.
36. SHIMAKAWA, Y. and HONKURA, Y. (1991). Electrical conductivity structure beneath the Ryukyu Trench-Arc system and its relation to the Philippine sea plate. Jour. Geomag. Geoelect, v.43, pp.1-20.
37. THAKUR, N.K., MAHASHABDE, M.V., ARORA, B.R., SINGH, B.P., SRIVASTAVA, B.J. and PRASAD, S.N. (1986). Geomagnetic variation anomalies in Peninsular India. Geophys. Jour. Roy. Astron. Soc., v.86, pp.839-854.
38. VASSEUR, G. and WEIDELT, P. (1977). Bimodal electromagnetic induction in non-uniform thin sheet with an application to the northern Pyrenean induction anomaly. Geophys. Jour. Roy. Astron. Soc., v.51, pp.445-462.
39. WAFF, H.S. (1974). Theoretical consideration of electrical conductivity in a partially molten mantle and implications for geothermometry. Jour. Geophys. Res., v.79, pp.4003-4010.
40. WEAVER, J.T. (1982). Regional induction in Scotland; An example of three dimensional numerical modelling using the thin sheet approximation, Phys. Earth Planet. Inter, v.28, pp. 161-180.
41. YUKUTAKE, T., FlLLOUX, J.H., SEGAWA, J., HAMAKO, Y. and UTADA, H. (1983). Preliminary report on a magnetotelluric array study in the Northwest Pacific. Jour. Geomag. Geoelectr., v.35, pp.575-587.